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    In the simple window model, all the bulk properties, chiefly
    U-factor and SHGC, are smeared over a single monolithic layer.  The
    main source<br>
    of discrepancy from the detailed layer-by-layer model, however, are
    not the bulk properties, but the angular properties of the window.<br>
    <pre class="moz-signature" cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
<a class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.whiteboxtechnologies.com">www.whiteboxtechnologies.com</a>
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
    <br>
    On 8/3/2011 12:26 PM, Arpan Bakshi wrote:
    <blockquote
cite="mid:CAA=SsNBT453O7G_fudBBvxoCo3WDtCyXDVofL++=ShqW7e0ZhA@mail.gmail.com"
      type="cite">
      <meta http-equiv="Context-Type" content="text/html;
        charset=windows-1252">
      <div>One thought about the 0-frame and NRFC modeling method is,
        what about the additional visible light transmissive areas for
        what would have been opaque frame and is now glass? Do others
        simply apply the same SHGC from COG properties to the frame, now
        that the assembly is monolithic?</div>
      <div> </div>
      <div> </div>
      <div>Arpan</div>
      <div><br>
        <br>
         </div>
      <div>On Wed, Aug 3, 2011 at 3:16 PM, Joe Huang <span><<a
            moz-do-not-send="true"
            href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>></span>
        wrote:<br>
        <blockquote>
          <div>This is an interesting thread that's related to a topic
            that has been going around in ASHRAE TC 4.7 for almost four
            years, so I'd like to add my two-cents.<br>
            <br>
            1. I've always understood that the fenestration requirements
            in ASHRAE 90.1 are for the whole assembly, i.e.,
            fenestration + frame. <br>
            2. The NFRC rated values are also for the whole assembly,
            but those bulk property values are insufficient for modeling
            because (a) they do not indicate the angular properties of
            the glazing,  (b) they do not distinguish between
            center-of-glass, edge-of-glass, or frame.  <br>
            3. If the detailed fenestration description is available,
            one can model it in WINDOW-5/6 and produce a WINDOW-5 file
            (or what the WINDOW-5 people call the "DOE-2 file"!) and use
            that in DOE-2/eQUEST.<br>
            4. If the detailed fenestration description is not
            available, one can model it using the simple monolithic
            window model in DOE-2, but the results may differ
            substantially from 3, particularly for complex glazing
            systems; under no circumstances should comparisons be done
            mixing the two methods, i.e., comparing a window modeled 
            using WINDOW-5/6 and another modeled using the simple window
            model.<br>
            <br>
            So, this gets to the topic floating around in ASHRAE TC 4.7
            (Energy Calculations):<br>
            <br>
            5. Although 3 is the most desirable approach, there are many
            instances where it's unfeasible, either because<br>
            only the bulk properties have been defined, e.g., for ASHRAE
            90.1 or Title-24, or the detailed fenestration descriptions
            are not available, as in an existing building.  For those
            instances, would it be helpful to have a computer program
            that would "reverse engineer" the layer-by-layer description
            of the fenestration based on its bulk properties (assembly
            U-factor, SHGC) and any other obtainable details, e.g.,
            number of panes, gap thickness, frame material type, etc.
            ?   A number of us within TC 4.7 have felt "yes", but I
            thought I'd canvas people on this thread on what you think.<br>
            <br>
            Please send me e-mail if you wish to see the draft Work
            Statement.<br>
            <br>
            Joe<br>
            (former TC 4.7 Research Subcommittee Chair)
            <pre>Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
<a moz-do-not-send="true" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a moz-do-not-send="true" href="http://www.whiteboxtechnologies.com/">www.whiteboxtechnologies.com</a>
(o) <a moz-do-not-send="true" href="tel:%28925%29388-0265">(925)388-0265</a>
(c) <a moz-do-not-send="true" href="tel:%28510%29928-2683">(510)928-2683</a>
"building energy simulations at your fingertips"
</pre>
            <br>
            On 8/2/2011 11:23 AM, Brad Robinson wrote:
            <blockquote type="cite">
              <div>
                <div><span>There are, it seems, a multitude of ways
                    people on this forum go about modeling windows. It
                    would be interesting to know, in terms of a LEED
                    review, what others have been required to provide in
                    terms of modeling the windows. Does anyone have
                    experience on the Canadian side of the border what
                    is required?  Thanks.</span></div>
                <div><br>
                  <span></span></div>
                <div><span>Brad Robinson<br>
                  </span></div>
                <div><br>
                </div>
                <div>
                  <div><b><span>From:</span></b> R B <a
                      moz-do-not-send="true"
                      href="mailto:slv3sat@gmail.com"><slv3sat@gmail.com></a><br>
                    <b><span>To:</span></b> eQUEST Users List <a
                      moz-do-not-send="true"
                      href="mailto:equest-users@lists.onebuilding.org"><equest-users@lists.onebuilding.org></a><br>
                    <b><span>Sent:</span></b> Saturday, July 30, 2011
                    11:29:31 PM<br>
                    <b><span>Subject:</span></b> Re: [Equest-users]
                    URGENT: Window U-values: Total window assembly v/s
                    Glass only<br>
                    <br>
                    <div>
                      <div>Came across this in eQuest help - basically
                        suggests to use zero frame width.</div>
                      <div>-Rohini</div>
                      <div> </div>
                      <div> </div>
                      <div><a moz-do-not-send="true">Volume 2:
                          Dictionary</a><span> > </span><a
                          moz-do-not-send="true">Envelope Components</a><span>
                          > </span><a moz-do-not-send="true">WINDOW</a><span>
                          > </span><a moz-do-not-send="true">Window
                          Frames and Skylight Curbs</a></div>
                      <h5>FRAME-WIDTH</h5>
                      <div>Projected width of the frame in the plane of
                        the glazing (<a moz-do-not-send="true">Figure 27</a>).
                        We recommend that frames be entered only if the
                        frame area is more than 10 percent or so of the
                        glazed area, which is generally only the case in
                        residential applications. The program assumes
                        that the frame width is the same on all sides of
                        the window. If this is not the case, use the
                        average frame width.</div>
                      <br>
                      <br>
                      <div>On Fri, Jul 29, 2011 at 4:15 PM, Alex Krickx
                        <span><<a moz-do-not-send="true"
                            href="mailto:akrickx@seriousenergy.com">akrickx@seriousenergy.com</a>></span>
                        wrote:<br>
                        <blockquote>
                          <div lang="EN-US">
                            <div>
                              <div><span>Great thread- </span></div>
                              <div><span>  </span></div>
                              <div><span>To answer Vikram’s question -
                                  When using WINDOW, you are slightly
                                  limited in the output file (for
                                  example, if I create an NFRC-type
                                  model to figure out U-value for a
                                  curtainwall system, I will need to
                                  simply the window to export it into a
                                  DOE-2 report format). When you do
                                  import a WINDOW Report for DOE-2 into
                                  eQUEST it does not load any frame
                                  information with it – it presents the
                                  COG glass performance. My process is
                                  to adjust the spacer type and frame
                                  width+conductance to make an object
                                  that matches what WINDOW tells me my
                                  window performance is. </span></div>
                              <div><span>  </span></div>
                              <div><span>I don’t model for LEED, so am
                                  less familiar with what is required
                                  for that – since I work for a window
                                  manufacturer I usually have access to
                                  all the data I need to determine
                                  frame-inclusive u-value and SHGCs,
                                  i.e. no need to rely on 90.1 defaults.
                                </span></div>
                              <div><span>  </span></div>
                              <div><span>Since the conversation was
                                  about using NFRC data – let me ask
                                  this question: NFRC data for windows
                                  (curtainwall assemblies included) is
                                  for a “default” size. I believe for
                                  curtainwall a mulled unit is modeled
                                  at 2m x 2m (or 78.54” x 78.54”) – as
                                  shown below: </span></div>
                              <div><span>  </span></div>
                              <div><span><img moz-do-not-send="true"></span><span>
                                </span></div>
                              <div><span>  </span></div>
                              <div><span>This is an example, but let’s
                                  say that the NFRC value is U-0.34. If
                                  your building has a smaller or larger
                                  window (which will change the
                                  glass-to-frame ratio) the U-value will
                                  be different. </span></div>
                              <div><span>  </span></div>
                              <div><span>Is it still appropriate to use
                                  the NFRC value in that case, where it
                                  is entered as a frame-inclusive
                                  U-factor and SHGC? I’m curious as to
                                  how others approach this issue when
                                  dealing with models for compliance. </span></div>
                              <div><span>  </span></div>
                              <div><span>Kind regards, </span></div>
                              <div><span>Alex Krickx </span></div>
                              <div><span>  </span></div>
                              <div><span>Alex Krickx, LEED AP </span></div>
                              <div><span>Building Energy Specialist </span></div>
                              <div><span>Serious Energy, Inc. </span></div>
                              <div><span>1250 Elko Dr, Sunnyvale, CA
                                  94089 </span></div>
                              <div><span>(t) <a moz-do-not-send="true">408.541.8124</a>
                                </span></div>
                              <div><span><a moz-do-not-send="true"
                                    href="mailto:akrickx@seriousenergy.com">akrickx@seriousenergy.com</a>
                                </span></div>
                              <div><span>  </span></div>
                              <div><i><span>The information contained in
                                    this e-mail and any attachments may
                                    be confidential, proprietary and/or
                                    privileged. If you are not the
                                    intended recipient then you have
                                    received it in error and any review,
                                    distribution or copying of this
                                    message and any attachments is
                                    prohibited and you are to notify the
                                    sender immediately by reply e-mail
                                    and delete immediately this message
                                    and any attachments.</span></i><span>
                                </span></div>
                              <div><span>  </span></div>
                              <div><span>  </span></div>
                              <div><span>  </span></div>
                              <div><span>  </span></div>
                              <div><span>  </span></div>
                              <div>
                                <div>
                                  <div><b><span>From:</span></b><span> <a
                                        moz-do-not-send="true"
                                        href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
                                      [mailto:<a moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>]
                                      <b>On Behalf Of </b>Sami, Vikram<br>
                                      <b>Sent:</b> Friday, July 29, 2011
                                      1:39 PM<br>
                                      <b>To:</b> Robby Oylear; Bill
                                      Talbert; Carol Gardner</span></div>
                                  <div>
                                    <div><br>
                                      <b>Cc:</b> <a
                                        moz-do-not-send="true"
                                        href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
                                      <b>Subject:</b> Re: [Equest-users]
                                      URGENT: Window U-values: Total
                                      window assembly v/s Glass only </div>
                                  </div>
                                </div>
                              </div>
                              <div>
                                <div>
                                  <div>  </div>
                                  <div><span>Firstly – congratulations
                                      to all contributors – I think this
                                      is probably the first time (that I
                                      recall) that all of the posts on
                                      this list have been on a single
                                      thread. I couldn’t resist being a
                                      part of this so I’m going to add
                                      my 2 cents: </span></div>
                                  <div><span>  </span></div>
                                  <div><span>90.1 baseline values &
                                      SHGC are assembly u-values so your
                                      frame needs to be calculated into
                                      this. To get the derated value –
                                      you could either use the handy
                                      little XL spreadsheet that comes
                                      with the install of eQUEST (under
                                      the data\window folder) called
                                      eQUEST-DOE2 Glass Library.xls.
                                      This gives you COG values <b>AND
                                      </b>glass+frame NFRC values. They
                                      have separate table where it is
                                      sorted by U-value and SHGC – I use
                                      it all the time (screenshot
                                      below). </span></div>
                                  <div><span>  </span></div>
                                  <div><span>  </span></div>
                                  <div><img moz-do-not-send="true"><span>
                                    </span></div>
                                  <div><span>  </span></div>
                                  <div><span>So you can select your
                                      values in conjunction with the
                                      values below from the DOE2 help
                                      file to get what you need. </span></div>
                                  <div><span>  </span></div>
                                  <div><span>  </span></div>
                                  <div>
                                    <table>
                                      <tbody>
                                        <tr>
                                          <td valign="top">
                                            <div><b><br>
                                                Frame Type</b> </div>
                                          </td>
                                          <td valign="top">
                                            <div><b>FRAME-CONDUCT
                                                (excludes OA film)</b> </div>
                                          </td>
                                          <td valign="top">
                                            <div><b><br>
                                                U-value<sup>a</sup></b>
                                            </div>
                                          </td>
                                        </tr>
                                        <tr>
                                          <td valign="top">
                                            <div>Thermally unbroken
                                              aluminum </div>
                                          </td>
                                          <td valign="top">
                                            <div>3.037 (17.24) </div>
                                          </td>
                                          <td valign="top">
                                            <div>1.90 (10.79) </div>
                                          </td>
                                        </tr>
                                        <tr>
                                          <td valign="top">
                                            <div>Thermally broken
                                              aluminum </div>
                                          </td>
                                          <td valign="top">
                                            <div>1.245 (7.07) </div>
                                          </td>
                                          <td valign="top">
                                            <div>1.00 (5.68) </div>
                                          </td>
                                        </tr>
                                        <tr>
                                          <td valign="top">
                                            <div>External flush glazed
                                              aluminum </div>
                                          </td>
                                          <td valign="top">
                                            <div>0.812 (4.61) </div>
                                          </td>
                                          <td valign="top">
                                            <div>0.70 (3.97) </div>
                                          </td>
                                        </tr>
                                        <tr>
                                          <td valign="top">
                                            <div>Wood with or without
                                              cladding </div>
                                          </td>
                                          <td valign="top">
                                            <div>0.434 (2.46) </div>
                                          </td>
                                          <td valign="top">
                                            <div>0.40 (2.27) </div>
                                          </td>
                                        </tr>
                                        <tr>
                                          <td valign="top">
                                            <div>Vinyl </div>
                                          </td>
                                          <td valign="top">
                                            <div>0.319 (1.81) </div>
                                          </td>
                                          <td valign="top">
                                            <div>0.30 (1.70) </div>
                                          </td>
                                        </tr>
                                        <tr>
                                          <td colspan="3" valign="top">
                                            <div><sup>a</sup> U-value
                                              includes OA film at 15 mph
                                              [6.7 m/s] windspeed<br>
                                                FRAME-CONDUCT =
                                              [(U-value)<sup>-1</sup> -
                                              0.197]<sup>-1</sup>
                                              Btu/ft2-F-h<br>
                                                FRAME-CONDUCT =
                                              [(U-value)<sup>-1</sup> -
                                              0.035]<sup>-1</sup> W/m2-K
                                            </div>
                                          </td>
                                        </tr>
                                      </tbody>
                                    </table>
                                  </div>
                                  <div><span>  </span></div>
                                  <div><span>  </span></div>
                                  <div><b><span>  </span></b></div>
                                  <div><span>Alternately, you can select
                                      a COG value to match what you
                                      want, set your frame to zero and
                                      your spacer to UE-EQ-UC (this will
                                      give you a uniform COG conductance
                                      across the assembly). </span></div>
                                  <div><span>  </span></div>
                                  <div><span>I am curious about LBNL
                                      window imports. When you set up
                                      your assembly in window – it
                                      includes frames, but you import it
                                      in as a glass type – should you
                                      zero out the frame (as in the
                                      second case) if you import from
                                      window? </span></div>
                                  <div><span>  </span></div>
                                  <div><b><span>  </span></b></div>
                                  <div><b><span>Vikram Sami</span></b><span>,
                                      LEED AP BD+C </span></div>
                                  <div><span>Sustainable Design Analyst
                                    </span></div>
                                  <div><span>1315 Peachtree St. NE,
                                      Atlanta, GA 30309 </span></div>
                                  <div><span>t: <a
                                        moz-do-not-send="true">404-443-7462</a>   
                                      f: </span><span lang="ES"><a
                                        moz-do-not-send="true">404.892.5823</a>   </span><span>   
                                      e: <a moz-do-not-send="true"
                                        href="mailto:vikram.sami@perkinswill.com">vikram.sami@perkinswill.com</a>  
                                    </span><span><a
                                        moz-do-not-send="true"
                                        href="http://www.perkinswill.com/"><span>www.perkinswill.com</span></a></span><span>
                                    </span></div>
                                  <div><b><span>Perkins+Will.</span></b><span> 
                                    </span><span>Ideas + buildings that
                                      honor the broader goals of society</span><span>
                                    </span></div>
                                  <div><span>  </span></div>
                                  <div><span>  </span></div>
                                  <div>
                                    <div><b><span>From:</span></b><span>
                                        <a moz-do-not-send="true"
                                          href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
                                        [mailto:<a
                                          moz-do-not-send="true"
                                          href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>]
                                        <b>On Behalf Of </b>Robby
                                        Oylear<br>
                                        <b>Sent:</b> Friday, July 29,
                                        2011 4:18 PM<br>
                                        <b>To:</b> Bill Talbert; Carol
                                        Gardner<br>
                                        <b>Cc:</b> <a
                                          moz-do-not-send="true"
                                          href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
                                        <b>Subject:</b> Re:
                                        [Equest-users] URGENT: Window
                                        U-values: Total window assembly
                                        v/s Glass only </span></div>
                                  </div>
                                  <div>  </div>
                                  <div>From the 90.1 User's Manual pg
                                    5-12: </div>
                                  <div>
                                    <div>  </div>
                                  </div>
                                  <div>
                                    <div>"With Addendum 90.1ag
                                      (published  </div>
                                    <div>
                                      <div>with Standard 90.1-2001)
                                        glazed wall  </div>
                                    </div>
                                    <div>
                                      <div>systems, including glass
                                        curtain walls used  </div>
                                    </div>
                                    <div>
                                      <div>on large buildings,
                                        storefront glazing  </div>
                                    </div>
                                    <div>
                                      <div>systems, and other similar
                                        products that  </div>
                                    </div>
                                    <div>
                                      <div>are assembled at the
                                        construction site, as  </div>
                                    </div>
                                    <div>
                                      <div>opposed to at the factory,
                                        must either be  </div>
                                    </div>
                                    <div>
                                      <div>rated using NFRC procedures
                                        or the  </div>
                                    </div>
                                    <div>
                                      <div>default U-factor, SHGC and
                                        VLT from  </div>
                                    </div>
                                    <div>
                                      <div>Table A8.2. Since the
                                        performance values  </div>
                                    </div>
                                    <div>
                                      <div>in Table A8.1A are based on
                                        uncoated  </div>
                                    </div>
                                    <div>
                                      <div>clear glass in poorly
                                        performing metal  </div>
                                    </div>
                                    <div>
                                      <div>frame, they do not offer any
                                        credit for  </div>
                                    </div>
                                    <div>
                                      <div>low-e coatings, thermal break
                                        frames or  </div>
                                    </div>
                                    <div>
                                      <div>any other advanced feature.
                                        In general,  </div>
                                    </div>
                                    <div>
                                      <div>values from Table A8.1A will
                                        not achieve  </div>
                                    </div>
                                    <div>
                                      <div>
                                        <div>compliance with the
                                          fenestration  </div>
                                      </div>
                                      <div>
                                        <div>requirements.   </div>
                                      </div>
                                      <div>
                                        <div>The NFRC procedure for
                                          site-built  </div>
                                      </div>
                                      <div>
                                        <div>fenestration is described
                                          in NFRC 100.  </div>
                                      </div>
                                      <div>
                                        <div>The NFRC ratings are based
                                          on computer  </div>
                                      </div>
                                      <div>
                                        <div>simulations of various
                                          product options at  </div>
                                      </div>
                                      <div>
                                        <div>standard sizes. (For
                                          curtain walls, the  </div>
                                      </div>
                                      <div>
                                        <div>standard size specified is
                                          2000 mm by  </div>
                                      </div>
                                      <div>
                                        <div>2000 mm, or approximately
                                          79 in. by 79  </div>
                                      </div>
                                      <div>
                                        <div>in.) Multiple glass options
                                          can be included  </div>
                                      </div>
                                      <div>
                                        <div>in one simulation matrix.
                                          The entire  </div>
                                      </div>
                                      <div>
                                        <div>simulation matrix is then
                                          validated by a  </div>
                                      </div>
                                      <div>
                                        <div>single physical test at the
                                          standard size. If  </div>
                                      </div>
                                      <div>
                                        <div>the matrix for a product
                                          has previously  </div>
                                      </div>
                                      <div>
                                        <div>been validated, then a new
                                          glass option  </div>
                                      </div>
                                      <div>
                                        <div>can be added to the matrix
                                          by simulation  </div>
                                      </div>
                                      <div>
                                        <div>alone. Simulations and
                                          tests must be done  </div>
                                      </div>
                                      <div>
                                        <div>by an NFRC-accredited
                                          simulation and  </div>
                                      </div>
                                      <div>
                                        <div>test laboratories."  </div>
                                      </div>
                                    </div>
                                    <div>
                                      <div>  </div>
                                    </div>
                                    <div>
                                      <div>Also, the LEED Reference
                                        Guide for Green Building Design
                                        and Construction, pg 275
                                        specifically references Tables
                                        A8.1 and A8.2 or requires that
                                        the products be certified and
                                        labeled in accordance with NFRC.
                                          </div>
                                    </div>
                                    <div>
                                      <div>  </div>
                                    </div>
                                    <div>
                                      <div>Not seeing any statements
                                        that would allow the modeler to
                                        perform their own fenestration
                                        assembly performance
                                        calculations. </div>
                                    </div>
                                    <div>
                                      <div>  </div>
                                    </div>
                                    <div>
                                      <div>-Robby </div>
                                    </div>
                                    <div>
                                      <div>  </div>
                                    </div>
                                    <div>  </div>
                                    <div>
                                      <div>On Fri, Jul 29, 2011 at 12:02
                                        PM, Bill Talbert <<a
                                          moz-do-not-send="true"
                                          href="mailto:btalbert@aeieng.com">btalbert@aeieng.com</a>>
                                        wrote: </div>
                                      <div>
                                        <div>
                                          <div><span>Regarding Omar’s
                                              first question, I would
                                              also clarify that adding a
                                              frame to the baseline is
                                              probably not the correct
                                              approach unless you are
                                              adjusting the U-value to a
                                              center of glass value and
                                              accounting for the frame
                                              and edge effects such that
                                              the total fenestration
                                              performance is equal to
                                              the 90.1 prescribed value.</span>
                                          </div>
                                          <div><span> </span> </div>
                                          <div><span>‘They are silent
                                              about frames but I would
                                              use one, match the frame
                                              width of your proposed
                                              window. Use an Aluminum
                                              frame with no thermal
                                              break.’</span> </div>
                                          <div><span> </span> </div>
                                          <div><span>Baseline Table
                                              5.5-1 through 5.5-8
                                              specify ‘fenestration
                                              assembly’ values which
                                              include the effect of the
                                              frames and edge of glass.
                                              Modeling a frame in the
                                              Baseline will further
                                              degrade the overall
                                              fenestration U-value
                                              (unless your frame
                                              outperforms the glazing)
                                              and result in
                                              overestimating the savings
                                              relative to the
                                              fenestration performance.
                                              If you use the Table
                                              values for your window
                                              performance, frames
                                              shouldn’t be included. If
                                              you include a frame, you
                                              should create a 90.1
                                              compliant product using
                                              WINDOW and use the
                                              appropriate frame and
                                              glazing performance values
                                              as eQuest inputs such that
                                              your overall frame and
                                              glazing performance
                                              matches the A90.1 Table
                                              value.</span> </div>
                                          <div><span>Regards,</span> </div>
                                          <div><span>Bill</span> </div>
                                          <div>  </div>
                                          <div><span> </span> </div>
                                          <table>
                                            <tbody>
                                              <tr>
                                                <td valign="top">
                                                  <div><b><span>Bill
                                                        Talbert</span></b><b><span> 
                                                      </span></b><span>PE,
                                                      LEED® AP<br>
                                                    </span><span>Sustainable</span>
                                                  </div>
                                                </td>
                                                <td valign="top">
                                                  <div><span> </span> </div>
                                                </td>
                                                <td valign="top">
                                                  <div><b><span>AEI</span></b><span>
                                                      | AFFILIATED
                                                      ENGINEERS, INC.  <br>
                                                      5802 Research Park
                                                      Boulevard |
                                                      Madison, WI  53719<br>
                                                      <br>
                                                    </span><span>P: <a
moz-do-not-send="true">608.441.6677</a> | C: <a moz-do-not-send="true">608.234.3803</a>
                                                      | F: <a
                                                        moz-do-not-send="true">608.238.2614</a></span><span>    <br>
                                                    </span><span><a
                                                        moz-do-not-send="true"
href="mailto:btalbert@aeieng.com"><span>btalbert@aeieng.com</span></a> 
                                                      |  <b><a
                                                          moz-do-not-send="true"
href="http://www.aeieng.com/"><span>www.aeieng.com</span></a></b></span><span>
                                                       </span> </div>
                                                </td>
                                              </tr>
                                            </tbody>
                                          </table>
                                          <div><span> </span> </div>
                                          <div><span> </span> </div>
                                          <div>  </div>
                                          <div><span> </span> </div>
                                          <div><span> </span> </div>
                                          <div>
                                            <div><b><span>From:</span></b><span>
                                                <a
                                                  moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
                                                [mailto:<a
                                                  moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>]
                                                <b>On Behalf Of </b>Carol
                                                Gardner<br>
                                                <b>Sent:</b> Friday,
                                                July 29, 2011 1:35 PM<br>
                                                <b>To:</b> Robby Oylear</span>
                                            </div>
                                            <div>
                                              <div><br>
                                                <b>Cc:</b> <a
                                                  moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>
                                              </div>
                                            </div>
                                            <div>
                                              <div>
                                                <div><b>Subject:</b> Re:
                                                  [Equest-users] URGENT:
                                                  Window U-values: Total
                                                  window assembly v/s
                                                  Glass only </div>
                                              </div>
                                            </div>
                                          </div>
                                          <div>
                                            <div>
                                              <div>  </div>
                                              <div>This came off of the
                                                Window website: </div>
                                              <div>WINDOW 6.3 is a
                                                publicly available
                                                computer program for
                                                calculating total window
                                                thermal performance
                                                indices (i.e. U-values,
                                                solar heat gain
                                                coefficients, shading
                                                coefficients, and
                                                visible transmittances).
                                                WINDOW 6.3 provides a
                                                versatile heat transfer
                                                analysis method
                                                consistent with the
                                                updated rating procedure
                                                developed by the
                                                National Fenestration
                                                Rating Council (NFRC)
                                                that is consistent with
                                                the ISO 15099 standard.
                                                The program can be used
                                                to design and develop
                                                new products, to assist
                                                educators in teaching
                                                heat transfer through
                                                windows, and to help
                                                public officials in
                                                developing building
                                                energy codes.   </div>
                                              <div>  </div>
                                              <div>  </div>
                                              <div>
                                                <div>On Fri, Jul 29,
                                                  2011 at 11:26 AM,
                                                  Robby Oylear <<a
                                                    moz-do-not-send="true"
href="mailto:robbyoylear@gmail.com">robbyoylear@gmail.com</a>> wrote:
                                                </div>
                                                <div>
                                                  <div>Carol, </div>
                                                </div>
                                                <div>
                                                  <div>  </div>
                                                </div>
                                                <div>
                                                  <div>I have to take
                                                    exception to this: </div>
                                                </div>
                                                <div>
                                                  <div>"As far as NFRC,
                                                    your Solarban glass
                                                    data is NFRC rated
                                                    which should be good
                                                    enough, I think.
                                                    It's rare in
                                                    commercial buildings
                                                    to have a rating for
                                                    the entire window."
                                                  </div>
                                                  <div>
                                                    <div>  </div>
                                                  </div>
                                                </div>
                                                <div>
                                                  <div>From my first
                                                    response:  </div>
                                                </div>
                                                <div>
                                                  <div>
                                                    <div><span>In order
                                                        to meet LEED
                                                        EAp2 Minimum
                                                        Energy
                                                        Performance, the
                                                        project must
                                                        comply with all
                                                        mandatory
                                                        provisions of
                                                        ASHRAE
                                                        90.1-2007.
                                                         Section 5.4.2
                                                        Fenestration and
                                                        Doors requires
                                                        that
                                                        fenestration
                                                        performance be
                                                        determined per
                                                        section 5.8.2.
                                                         Section 5.8.2.4
                                                        U-factor
                                                        requires that
                                                        the U-factor for
                                                        the overall
                                                        fenestration
                                                        area (including
                                                        framing) be
                                                        determined in
                                                        accordance with
                                                        NFRC 100. If you
                                                        do not have NFRC
                                                        data available,
                                                        values from
                                                        section A8.2 are
                                                        the only
                                                        acceptable
                                                        alternative.</span>
                                                    </div>
                                                  </div>
                                                  <div>
                                                    <div>  </div>
                                                  </div>
                                                </div>
                                                <div>
                                                  <div>NFRC values for
                                                    the glazing alone
                                                    not "good enough".
                                                     This is exactly
                                                    what the reviewer is
                                                    trying to get at. </div>
                                                </div>
                                                <div>
                                                  <div>  </div>
                                                </div>
                                                <div>
                                                  <div>I'd hardly call
                                                    NFRC certification
                                                    rare.  In the State
                                                    of Washington NFRC
                                                    certification has
                                                    been required for
                                                    all glazing
                                                    assemblies for over
                                                    10 years.   </div>
                                                </div>
                                                <div>
                                                  <div>
                                                    <div>  </div>
                                                  </div>
                                                  <div>
                                                    <div>How do you
                                                      justify certifying
                                                      that your projects
                                                      have met the
                                                      mandatory
                                                      provisions of
                                                      ASHRAE 90.1
                                                      without NFRC data?
                                                    </div>
                                                  </div>
                                                  <div>
                                                    <div>
                                                      <div>  </div>
                                                    </div>
                                                    <div>
                                                      <div><a
                                                          moz-do-not-send="true"
name="1319113c3023b5b3_13177c071350ddb0_1317746f9272af25_13177255b63123b2__MailA"><b><span>Robby
                                                          Oylear, LEED</span></b></a><b><sup><span>®</span></sup></b><b><span>
                                                          AP BD+C</span></b>
                                                      </div>
                                                      <div><i><span>Mechanical
                                                          Project
                                                          Engineer</span></i>
                                                      </div>
                                                      <div><i><span>Energy
                                                          Analyst</span></i>
                                                      </div>
                                                      <div><i><span> </span></i>
                                                      </div>
                                                      <div><b><span>D</span></b><span>
                                                        </span><span><a
moz-do-not-send="true">206-788-4571</a> |</span><span> </span><b><span>C</span></b><span>
                                                        </span><span><a
moz-do-not-send="true">206-354-2721</a></span> </div>
                                                      <div><a
                                                          moz-do-not-send="true"
href="http://www.rushingco.com/"><b><i><span>www.rushingco.com</span></i></b></a>
                                                      </div>
                                                    </div>
                                                    <div>
                                                      <div>  </div>
                                                    </div>
                                                  </div>
                                                  <div>
                                                    <div>
                                                      <div>
                                                        <div>On Fri, Jul
                                                          29, 2011 at
                                                          11:12 AM,
                                                          Carol Gardner
                                                          <<a
                                                          moz-do-not-send="true"
href="mailto:cmg750@gmail.com">cmg750@gmail.com</a>> wrote: </div>
                                                        <div>  </div>
                                                        <div>
                                                          <div>
                                                          <div>On Thu,
                                                          Jul 28, 2011
                                                          at 5:40 AM,
                                                          Omar Katanani
                                                          <<a
                                                          moz-do-not-send="true"
href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a>>
                                                          wrote: </div>
                                                          </div>
                                                          <blockquote>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">Dear
                                                          all,</span> </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Thank
                                                          you for your
                                                          responses.</span>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <ol type="1">
                                                          <li><span
                                                          lang="EN-GB">Are
                                                          the NFRC
                                                          testing and
                                                          the values in
                                                          table A8.2
                                                          used for the
                                                          Baseline,
                                                          Proposed, or
                                                          both
                                                          scenarios?</span><span
                                                          lang="EN-GB">
                                                          </span></li>
                                                          </ol>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          <div>
                                                          <div>For the
                                                          baseline
                                                          windows,
                                                          Appendix G
                                                          gives the
                                                          following
                                                          instructions:<br>
                                                          Fenestration<br>
                                                          U-factors
                                                          shall match
                                                          the
                                                          appropriate
                                                          requirements
                                                          in Tables
                                                          5.5-1 through<br>
                                                          5.5-8.
                                                          Fenestration
                                                          SHGC shall
                                                          match the
                                                          appropriate
                                                          requirements
                                                          in Tables<br>
                                                          5.5-1 through
                                                          5.5-8. <br>
                                                          They are
                                                          silent about
                                                          frames but I
                                                          would use one,
                                                          match the
                                                          frame width of
                                                          your proposed
                                                          window. Use an
                                                          Aluminum frame
                                                          with no
                                                          thermal break.
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <blockquote>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <ol start="2"
                                                          type="1">
                                                          <li><span
                                                          lang="EN-GB">Let’s
                                                          say I do not
                                                          have NFRC test
                                                          results and
                                                          decide to use
                                                          the values in
                                                          table A8.2.
                                                          For a clear
                                                          double glazed
                                                          and metal
                                                          frame type, I
                                                          get an
                                                          assembly
                                                          U-factor of
                                                          5.1. How can I
                                                          input this
                                                          into eQUEST?
                                                          As far as I
                                                          know, I can
                                                          enter the
                                                          glass
                                                          properties and
                                                          the frame
                                                          properties. Do
                                                          I have to play
                                                          with the glass
                                                          properties and
                                                          check the LV-D
                                                          report for the
                                                          calculated
                                                          Assembly
                                                          u-value?</span><span
                                                          lang="EN-GB">
                                                          </span></li>
                                                          </ol>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          <div>
                                                          <div>A U of
                                                          5.1 does not
                                                          make sense.
                                                          Are you sure
                                                          this isn't R?<br>
                                                            </div>
                                                          </div>
                                                          <div>
                                                          <blockquote>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">Similarly,
                                                          for the
                                                          baseline,
                                                          Tables 5.5-1
                                                          to 5.5-8 of
                                                          ASHRAE 90.1
                                                          provide the
                                                          assembly
                                                          u-values for
                                                          vertical
                                                          glazing. How
                                                          can I enter
                                                          these values
                                                          into eQUEST?</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <ol start="3"
                                                          type="1">
                                                          <li><span
                                                          lang="EN-GB">I
                                                          am attaching
                                                          the specs of
                                                          the proposed
                                                          glazing. These
                                                          numbers are
                                                          for the glass
                                                          only (note
                                                          that the
                                                          u-values
                                                          reported are
                                                          NFRC ones).
                                                          Additionally,
                                                          I know that
                                                          the frame will
                                                          be aluminium.
                                                          Do I still
                                                          need NFRC
                                                          U-values for
                                                          the whole
                                                          assembly, or
                                                          is the NFRC
                                                          usually for
                                                          the glass
                                                          only? If yes,
                                                          how can I
                                                          calculate the
                                                          whole assembly
                                                          U-value (given
                                                          that eQUEST
                                                          doesn’t have
                                                          the ability to
                                                          calculate
                                                          this)</span><span
                                                          lang="EN-GB">
                                                          </span></li>
                                                          </ol>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          <div>
                                                          <div><br>
                                                          <span>For your
                                                          proposed
                                                          building I
                                                          highly
                                                          recommend you
                                                          use LBNL's
                                                          Window
                                                          program. In it
                                                          you can select
                                                          your window
                                                          type, e.g.
                                                          casement,
                                                          picture, etc,,
                                                          select your
                                                          glass from
                                                          their glass
                                                          library, which
                                                          is huge and
                                                          definitely
                                                          includes
                                                          Solarban, and
                                                          then model
                                                          your frame
                                                          using whatever
                                                          information
                                                          the architect
                                                          gives you
                                                          related to
                                                          thermal breaks
                                                          and spacers.
                                                          After you run
                                                          your window in
                                                          the program
                                                          you can select
                                                          to save it to
                                                          a DOE 2 report
                                                          which will
                                                          automatically
                                                          go into your
                                                          DOE 2 Window
                                                          folder. Then
                                                          you just have
                                                          to select it
                                                          from the pull
                                                          down menu.</span><br>
                                                          <br>
                                                          <span>Otherwise,
                                                          input your
                                                          glass values,
                                                          as you are
                                                          already, and
                                                          input your
                                                          frame data,
                                                          the same data
                                                          you got from
                                                          your
                                                          architect, and
                                                          model it that
                                                          way. When you
                                                          look at your
                                                          LV-D report
                                                          you will
                                                          likely see a
                                                          variety of U
                                                          values. That's
                                                          because they
                                                          will vary
                                                          based on
                                                          window
                                                          size.due to
                                                          the frame
                                                          effect. You
                                                          need to have a
                                                          frame.</span><br>
                                                          <br>
                                                          <span>As far
                                                          as NFRC, your
                                                          Solarban glass
                                                          data is NFRC
                                                          rated which
                                                          should be good
                                                          enough, I
                                                          think. It's
                                                          rare in
                                                          commercial
                                                          buildings to
                                                          have a rating
                                                          for the entire
                                                          window.</span><br>
                                                          <br>
                                                          <span>Carol</span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div>
                                                          <blockquote>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Thanks
                                                          for clarifying
                                                          this, as my
                                                          project is
                                                          outside the US
                                                          and we are not
                                                          too familiar
                                                          with standards
                                                          such as NFRC.</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Best
                                                          regards,</span>
                                                          </div>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">Omar</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">___________________________</span><span
                                                          lang="EN-GB">
                                                          </span></div>
                                                          <div><span
                                                          lang="EN-GB">Omar
                                                          Katanani</span><span
                                                          lang="EN-GB"><br>
                                                          </span><span
                                                          lang="EN-GB">Sustainable
                                                          Design
                                                          Engineer</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Email:
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a></span> </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span>EcoConsulting
                                                          (Lebanon)</span>
                                                          </div>
                                                          </div>
                                                          <div><span>Nahas
                                                          Building, 4<sup>th</sup>
                                                          floor</span> </div>
                                                          <div>
                                                          <div><span>4
                                                          St-Maron
                                                          Street /
                                                          Georges Haddad
                                                          Avenue</span>
                                                          </div>
                                                          <div><span>Postal
                                                          Code: 2028
                                                          5806 SAIFI</span>
                                                          </div>
                                                          <div><span>Beirut,
                                                          Lebanon</span>
                                                          </div>
                                                          <div><span>Tel:         
                                                          </span><span
                                                          lang="EN-GB"><a
moz-do-not-send="true">+961 (0) 1 971 266</a><br>
                                                          Mobile:    <a
moz-do-not-send="true">+961 (0) 3 045 045</a></span> </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">EcoConsulting
                                                          (UK) Ltd<br>
                                                          28 Marshalsea
                                                          Road<br>
                                                          London, SE1
                                                          1HF<br>
                                                          Tel:  <a
                                                          moz-do-not-send="true">+44
                                                          (0) 207 939
                                                          0989</a><br>
                                                          Fax:  <a
                                                          moz-do-not-send="true">+44
                                                          (0) 207 939
                                                          0981</a></span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Website:
                                                          <a
                                                          moz-do-not-send="true"
href="http://www.ecoconsulting.net/">www.ecoconsulting.net</a></span> </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> <img
moz-do-not-send="true"></span> </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><b><span>From:</span></b><span>
                                                          Robby Oylear
                                                          [mailto:<a
                                                          moz-do-not-send="true"
href="mailto:robbyoylear@gmail.com">robbyoylear@gmail.com</a>] <br>
                                                          <b>Sent:</b>
                                                          28 July 2011
                                                          00:53<br>
                                                          <b>To:</b>
                                                          Omar Katanani<br>
                                                          <b>Cc:</b>
                                                          Brad Robinson;
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a></span>
                                                          </div>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                          <b>Subject:</b>
                                                          Re:
                                                          [Equest-users]
                                                          URGENT: Window
                                                          U-values:
                                                          Total window
                                                          assembly v/s
                                                          Glass only</span>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Omar,</span>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">To
                                                          directly
                                                          answer your
                                                          question:</span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">"</span><span
                                                          lang="EN-GB">I’m
                                                          assuming that,
                                                          given that I
                                                          entered the
                                                          u-values for
                                                          the glass
                                                          only, and then
                                                          I entered
                                                          information
                                                          about the
                                                          frame, then I
                                                          need not worry
                                                          about any
                                                          conversions in
                                                          U-values, 
                                                          since eQUEST
                                                          has all the
                                                          necessary
                                                          information to
                                                          calculate the
                                                          equivalent
                                                          u-value of the
                                                          whole pane +
                                                          frame
                                                          assembly,
                                                          right?</span><span
                                                          lang="EN-GB">"</span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">No.
                                                           Your method
                                                          will result in
                                                          an assembly
                                                          U-value based
                                                          on your input
                                                          glass
                                                          conductance
                                                          and whatever
                                                          default frame
                                                          properties
                                                          that the
                                                          eQUEST wizard
                                                          will use.  I
                                                          have never
                                                          tried to let
                                                          eQUEST
                                                          determine an
                                                          assembly
                                                          value, as NFRC
                                                          values are
                                                          required for
                                                          LEED and code
                                                          compliance
                                                          studies.  I
                                                          would not be
                                                          surprised if
                                                          the values
                                                          eQUEST is
                                                          calculating
                                                          (shown in LV-D
                                                          and LV-E
                                                          reports like
                                                          previously
                                                          mentioned) are
                                                          much different
                                                          than what
                                                          you'll
                                                          actually see
                                                          in the test
                                                          results.</span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">Again,
                                                          NFRC values
                                                          are a LEED
                                                          requirement,
                                                          so unless
                                                          you're just
                                                          doing
                                                          preliminary
                                                          analysis for a
                                                          client, you
                                                          need to
                                                          receive NFRC
                                                          simulation
                                                          reports or
                                                          certified
                                                          product
                                                          directory
                                                          numbers in
                                                          accordance
                                                          with NFRC 100.</span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><b><span
                                                          lang="EN-GB">Robby
                                                          Oylear, LEED<sup>®</sup>
                                                          AP BD+C</span></b>
                                                          </div>
                                                          <div><i><span
                                                          lang="EN-GB">Mechanical
                                                          Project
                                                          Engineer</span></i>
                                                          </div>
                                                          <div><i><span
                                                          lang="EN-GB">Energy
                                                          Analyst</span></i>
                                                          </div>
                                                          <div><i><span
                                                          lang="EN-GB"> </span></i>
                                                          </div>
                                                          <div><b><span
                                                          lang="EN-GB">D</span></b><span
                                                          lang="EN-GB">
                                                          </span><span
                                                          lang="EN-GB"><a
moz-do-not-send="true">206-788-4571</a> |</span><span lang="EN-GB"> </span><b><span
                                                          lang="EN-GB">C</span></b><span
                                                          lang="EN-GB">
                                                          </span><span
                                                          lang="EN-GB"><a
moz-do-not-send="true">206-354-2721</a></span> </div>
                                                          <div><span
                                                          lang="EN-GB"><a
moz-do-not-send="true" href="http://www.rushingco.com/"><b><i><span>www.rushingco.com</span></i></b></a></span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">On
                                                          Wed, Jul 27,
                                                          2011 at 2:44
                                                          PM, <<a
                                                          moz-do-not-send="true"
href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a>>
                                                          wrote:</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Dear
                                                          Robby,<br>
                                                          <br>
                                                          Yes, I am
                                                          modeling for
                                                          LEED purposes.<br>
                                                          I'll look into
                                                          A8.2. But at
                                                          least, is my
                                                          method correct
                                                          for the
                                                          proposed
                                                          scenario?<br>
                                                          <br>
                                                          Brad: I think
                                                          you need to
                                                          enter the
                                                          center of
                                                          glass u-value
                                                          in the "Glass
                                                          Type", and
                                                          then enter the
                                                          frame
                                                          properties in
                                                          the "Window"
                                                          properties...<br>
                                                          <br>
                                                          Best,<br>
                                                          Omar</span> </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                          <br>
                                                          Quoting Brad
                                                          Robinson <<a
moz-do-not-send="true" href="mailto:brad.robinson@yahoo.com">brad.robinson@yahoo.com</a>>:</span>
                                                          </div>
                                                          </div>
                                                          <blockquote>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                          <br>
                                                          Is the u-value
                                                          listed for a
                                                          manufacturer
                                                          and specific
                                                          model on the
                                                          NRCAN website
                                                          centre of
                                                          glass or
                                                          overall
                                                          assembly? 
                                                          Many windows
                                                          are custom
                                                          made to suit
                                                          so I am
                                                          unclear if
                                                          each
                                                          individual
                                                          custom window
                                                          would need to
                                                          be tested.<br>
                                                          <br>
                                                          <br>
                                                          <br>
                                                          In eQuest,
                                                          when entering
                                                          the window, if
                                                          the u-value
                                                          represents the
                                                          whole window,
                                                          including
                                                          frame, do you
                                                          need to enter
                                                          a frame width,
                                                          conductance
                                                          etc as well
                                                          under the
                                                          Window Frame
                                                          section under
                                                          Window
                                                          Properties? 
                                                          Thanks.<br>
                                                          <br>
                                                          <br>
                                                          Brad Robinson<br>
                                                          <br>
                                                          <br>
                                                          <br>
________________________________<br>
                                                          From: Robby
                                                          Oylear <<a
moz-do-not-send="true" href="mailto:robbyoylear@gmail.com">robbyoylear@gmail.com</a>><br>
                                                          To: Omar
                                                          Katanani <<a
moz-do-not-send="true" href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a>><br>
                                                          Cc: <a
                                                          moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
                                                          Sent:
                                                          Wednesday,
                                                          July 27, 2011
                                                          12:32:08 PM<br>
                                                          Subject: Re:
                                                          [Equest-users]
                                                          URGENT: Window
                                                          U-values:
                                                          Total window
                                                          assembly v/s
                                                          Glass only<br>
                                                          <br>
                                                          <br>
                                                          Omar,<br>
                                                          <br>
                                                          The answer
                                                          depends on the
                                                          purpose of
                                                          your study.
                                                           If you're
                                                          trying to get
                                                          results for a
                                                          client on the
                                                          impact of the
                                                          glazing on
                                                          their energy
                                                          performance,
                                                          this may be
                                                          adequate.
                                                           Make sure
                                                          you've entered
                                                          in the framing
                                                          information
                                                          properly
                                                          (metal vs.
                                                          non-metal).<br>
                                                          <br>
                                                          I'd recommend
                                                          opening up
                                                          your
                                                          simulation
                                                          output results
                                                          file
                                                          (xxxx.SIM) and
                                                          going to the
                                                          either the
                                                          last page of
                                                          the LV-D
                                                          report or sort
                                                          through your
                                                          LV-E report to
                                                          see what value
                                                          eQUEST has
                                                          calculated.
                                                           Compare these
                                                          values to the
                                                          ASHRAE
                                                          Fundamentals
                                                          results for
                                                          overall
                                                          assembly
                                                          values
                                                          including
                                                          frame to see
                                                          how close
                                                          you've come.
                                                           I would not
                                                          blindly trust
                                                          that eQUEST
                                                          will give you
                                                          an appropriate
                                                          overall
                                                          assembly value
                                                          based on
                                                          entering only
                                                          the center of
                                                          glass number.<br>
                                                          <br>
                                                          However, if
                                                          this is for a
                                                          LEED study,
                                                          this is not
                                                          adequate.
                                                           This an
                                                          excerpt from
                                                          an e-mail I
                                                          sent out
                                                          recently
                                                          regarding LEED
                                                          and NFRC
                                                          requirements.<br>
                                                          <br>
                                                          In order to
                                                          meet LEED EAp2
                                                          Minimum Energy
                                                          Performance,
                                                          the project
                                                          must comply
                                                          with all
                                                          mandatory
                                                          provisions of
                                                          ASHRAE
                                                          90.1-2007.
                                                           Section 5.4.2
                                                          Fenestration
                                                          and Doors
                                                          requires that
                                                          fenestration
                                                          performance be
                                                          determined per
                                                          section 5.8.2.
                                                           Section
                                                          5.8.2.4
                                                          U-factor
                                                          requires that
                                                          the U-factor
                                                          for the
                                                          overall
                                                          fenestration
                                                          area
                                                          (including
                                                          framing) be
                                                          determined in
                                                          accordance
                                                          with NFRC 100.
                                                          If you do not
                                                          have NFRC data
                                                          available,
                                                          values from
                                                          section A8.2
                                                          are the only
                                                          acceptable
                                                          alternative.<br>
                                                          <br>
                                                          Robby Oylear,
                                                          LEED®AP BD+C<br>
                                                          Mechanical
                                                          Project
                                                          Engineer<br>
                                                          Energy Analyst<br>
                                                           </span> </div>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">D206-788-4571
                                                          |C206-354-2721</span>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                          <a
                                                          moz-do-not-send="true"
href="http://www.rushingco.com/">www.rushingco.com</a><br>
                                                          <br>
                                                          <br>
                                                          <br>
                                                          <br>
                                                          <br>
                                                          On Wed, Jul
                                                          27, 2011 at
                                                          8:14 AM, Omar
                                                          Katanani <<a
moz-do-not-send="true" href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a>>
                                                          wrote:<br>
                                                          <br>
                                                          Dear all,</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> <br>
                                                          I have a small
                                                          question
                                                          regarding
                                                          entering</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">window
                                                          properties to
                                                          eQUEST:</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> <br>
                                                          I have read a
                                                          lot of emails
                                                          in the forum</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">discussing
                                                          NFRC testing,
                                                          LBNL Window 5
                                                          import, and
                                                          other topics
                                                          that I haven?t<br>
                                                          paid attention
                                                          to before.</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> <br>
                                                          The way I
                                                          modelled my
                                                          windows is the</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">following:</span>
                                                          </div>
                                                          </div>
                                                          <blockquote>
                                                          <div><span
                                                          lang="EN-GB"> <br>
                                                                 1. I
                                                          have
                                                          manufacturer?s
                                                          specifications
                                                          listing the
                                                          glass
                                                          U-values, not
                                                          the total
                                                          assembly.<br>
                                                                 2. In
                                                          the ?Glass
                                                          Types? (eQUEST
                                                          Detailed
                                                          Mode), I
                                                          created glass
                                                          types, and
                                                          entered the
                                                          glass
                                                          conductance,
                                                          visible
                                                          transmittance,
                                                          SC, and
                                                          emissivity
                                                          from the
                                                          manufacturer?s
                                                          details I
                                                          have.<br>
                                                                 3. When
                                                          creating
                                                          windows, I
                                                          specify which
                                                          glass type
                                                          (from the ones
                                                          I created in
                                                          step 2), in
                                                          addition to
                                                          the frame
                                                          width and
                                                          conductance.</span>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                           <br>
                                                          I?m assuming
                                                          that, given
                                                          that I</span>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">entered
                                                          the u-values
                                                          for the glass
                                                          only, and then
                                                          I entered
                                                          information
                                                          about<br>
                                                          the frame,
                                                          then I need
                                                          not worry
                                                          about any
                                                          conversions in
                                                          U-values,
                                                          since<br>
                                                          eQUEST has all
                                                          the necessary
                                                          information to
                                                          calculate the
                                                          equivalent
                                                          u-value of<br>
                                                          the whole pane
                                                          + frame
                                                          assembly,
                                                          right?</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> <br>
                                                          I appreciate
                                                          your feedback
                                                          / comments</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">today
                                                          if possible,
                                                          as this has
                                                          become really
                                                          urgent!</span>
                                                          </div>
                                                          </div>
                                                          <blockquote>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"> <br>
                                                          Many thanks,<br>
                                                          Omar<br>
___________________________<br>
                                                          Omar Katanani<br>
                                                          Sustainable
                                                          Design
                                                          Engineer<br>
                                                          Email: <a
                                                          moz-do-not-send="true"
href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a><br>
                                                           <br>
                                                          EcoConsulting
                                                          (Lebanon)</span>
                                                          </div>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">NahasBuilding,
                                                          4th floor</span>
                                                          </div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                          4 St-Maron
                                                          Street/
                                                          Georges Haddad
                                                          Avenue<br>
                                                          Postal Code:
                                                          2028 5806</span>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB">SAIFI</span>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB">Beirut,
                                                          Lebanon<br>
                                                          Tel:         
                                                          <a
                                                          moz-do-not-send="true">+961
                                                          (0) 1 971 266</a><br>
                                                          Mobile:    <a
moz-do-not-send="true">+961 (0) 3 045 045</a><br>
                                                           <br>
                                                          EcoConsulting
                                                          (UK) Ltd<br>
                                                          28 Marshalsea
                                                          Road<br>
                                                          London, SE1
                                                          1HF<br>
                                                          Tel:  <a
                                                          moz-do-not-send="true">+44
                                                          (0) 207 939
                                                          0989</a><br>
                                                          Fax:  <a
                                                          moz-do-not-send="true">+44
                                                          (0) 207 939
                                                          0981</a><br>
                                                          Website: <a
                                                          moz-do-not-send="true"
href="http://www.ecoconsulting.net/">www.ecoconsulting.net</a><br>
                                                           <br>
                                                           <br>
                                                           <br>
_______________________________________________<br>
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                                                          mailing list<br>
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                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"><br>
_______________________________________________<br>
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                                                          mailing list<br>
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                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          <div>
                                                          <div>
                                                          <div><span
                                                          lang="EN-GB"><br>
                                                          <br>
_______________________________________________<br>
                                                          Equest-users
                                                          mailing list<br>
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                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div><span
                                                          lang="EN-GB"> </span>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div><br>
_______________________________________________<br>
                                                          Equest-users
                                                          mailing list<br>
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                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                        </div>
                                                        <div><span><br>
                                                          <br>
                                                          <br>
                                                          -- <br>
                                                          Carol Gardner
                                                          PE</span> </div>
                                                      </div>
                                                      <div>  </div>
                                                    </div>
                                                  </div>
                                                </div>
                                              </div>
                                              <div><br>
                                                <br>
                                                <br>
                                                -- <br>
                                                Carol Gardner PE </div>
                                            </div>
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              <pre>  
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</pre>
            </blockquote>
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          <br>
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