<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt"><br><div style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><span>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></span><div id="yiv47684251"><div style="color:#000;background-color:#fff;font-family:arial, helvetica, sans-serif;font-size:10pt;"><div><br></div><div>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></div><div><br></div><div>Brad
Robinson</div><div><br></div><div><br></div><div style="font-family:arial, helvetica, sans-serif;font-size:10pt;"><div style="font-family:times new roman, new york, times, serif;font-size:12pt;"><font face="Arial" size="2"><hr size="1"><b><span style="font-weight:bold;">From:</span></b> Robby Oylear
<robbyoylear@gmail.com><br><b><span style="font-weight:bold;">To:</span></b> Omar Katanani <omar@ecoconsulting.net><br><b><span style="font-weight:bold;">Cc:</span></b> equest-users@lists.onebuilding.org<br><b><span style="font-weight:bold;">Sent:</span></b> Wednesday, July 27, 2011 12:32:08 PM<br><b><span style="font-weight:bold;">Subject:</span></b> Re: [Equest-users] URGENT: Window U-values: Total window assembly v/s Glass only<br></font><br><div id="yiv47684251">Omar,<div><br></div><div>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).</div>
<div><br></div><div>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.</div>
<div><br></div><div>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.</div><div><br></div><div><span class="yiv47684251Apple-style-span" style="border-collapse:collapse;font-family:arial, sans-serif;font-size:13px;"><div>
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.</div>
<div><br></div><div><div class="yiv47684251MsoNormal" style="margin-top:1.0pt;"><a rel="nofollow" name="_MailAutoSig"><b><span style="font-size:10.0pt;color:#632423;">Robby Oylear, LEED</span></b></a><span style=""><b><sup><span style="font-size:10.0pt;color:#632423;">®</span></sup></b></span><span style=""><b><span style="font-size:10.0pt;
color:#632423;"> AP BD+C</span></b></span></div>
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<div class="yiv47684251MsoNormal" style="line-height:115%;"><span style=""><b><span style="font-size:8.0pt;line-height:115%;color:#632423;">D</span></b></span><span style=""><span style="font-size:8.0pt;line-height:115%;color:#1F497D;"> </span></span><span style=""><span style="font-size:8.0pt;line-height:115%;color:black;">206-788-4571 |</span></span><span style=""><span style="font-size:8.0pt;line-height:115%;color:#BFAB7F;"> </span></span><span style=""><b><span style="font-size:8.0pt;line-height:115%;color:#632423;">C</span></b></span><span style=""><span style="font-size:8.0pt;line-height:115%;color:#A50021;"> </span></span><span style=""><span style="font-size:8.0pt;line-height:115%;color:black;">206-354-2721</span></span><span style=""><span style="font-size:8.0pt;line-height:115%;color:#BFAB7F;"></span></span></div>
<div class="yiv47684251MsoNormal" style="line-height:115%;"><span style=""></span><a rel="nofollow" target="_blank" href="http://www.rushingco.com/"><span style=""><b><i><span style="font-size:8.0pt;line-height:115%;
color:#632423;">www.rushingco.com</span></i></b></span><span style=""></span></a><span style=""><span style="font-size:7.0pt;line-height:115%;color:#1F497D;"></span></span></div></div><div><br></div><div><br></div><div><br></div></span></div><div><br><div class="yiv47684251gmail_quote">On Wed, Jul 27, 2011 at 8:14 AM, Omar Katanani <span dir="ltr"><<a rel="nofollow" ymailto="mailto:omar@ecoconsulting.net" target="_blank" href="mailto:omar@ecoconsulting.net">omar@ecoconsulting.net</a>></span> wrote:<br>
<blockquote class="yiv47684251gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="EN-GB">
<div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">Dear all,</span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">I have a small question regarding entering
window properties to eQUEST:</span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">I have read a lot of emails in the forum
discussing NFRC testing, LBNL Window 5 import, and other topics that I haven’t
paid attention to before. </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">The way I modelled my windows is the
following:</span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<ol style="margin-top:0cm;" start="1" type="1">
<li class="yiv47684251MsoNormal" style="color:navy;"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;">I have manufacturer’s
specifications listing the glass U-values, <b><u><span style="font-weight:bold;">not</span></u></b> the total assembly.</span></font></li>
<li class="yiv47684251MsoNormal" style="color:navy;"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;">In the “Glass Types”
(eQUEST Detailed Mode), I created glass types, and entered the <b><u><span style="font-weight:bold;">glass</span></u></b> conductance, visible
transmittance, SC, and emissivity from the manufacturer’s details I
have.</span></font></li>
<li class="yiv47684251MsoNormal" style="color:navy;"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;">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></font></li>
</ol>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">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, <u>since
eQUEST has all the necessary information to calculate the equivalent u-value of
the whole pane + frame assembly, </u>right?</span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">I appreciate your feedback / comments
today if possible, as this has become really urgent!</span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">Many thanks,</span></font></div>
<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">Omar</span></font></div>
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<div class="yiv47684251MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial;color:navy;">Omar Katanani</span></font><font color="navy"><span style="color:navy;"><br>
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