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="Apple-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>
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<p class="MsoNormal" style="line-height:115%"><span style="mso-bookmark:_MailAutoSig"></span><a href="http://www.rushingco.com/"><span style="mso-bookmark:_MailAutoSig"><b><i><span style="font-size:8.0pt;mso-bidi-font-size:11.0pt;line-height:115%;font-family:
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color:#1F497D;mso-no-proof:yes"></span></span></p></div><div><br></div><div><br></div><div><br></div></span></div><div><br><div class="gmail_quote">On Wed, Jul 27, 2011 at 8:14 AM, Omar Katanani <span dir="ltr"><<a href="mailto:omar@ecoconsulting.net" target="_blank">omar@ecoconsulting.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-GB" link="blue" vlink="#606420">
<div>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">Dear all,</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">I have a small question regarding entering
window properties to eQUEST:</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><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></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">The way I modelled my windows is the
following:</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoNormal" style="color:navy"><font size="2" color="navy" face="Arial"><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="MsoNormal" style="color:navy"><font size="2" color="navy" face="Arial"><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="MsoNormal" style="color:navy"><font size="2" color="navy" face="Arial"><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>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><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></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><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></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">Many thanks,</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">Omar</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">___________________________</span></font><font color="navy"><span style="color:navy"> </span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">Omar Katanani</span></font><font color="navy"><span style="color:navy"><br>
</span></font><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">Sustainable Design Engineer</span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy">Email: <a href="mailto:omar@ecoconsulting.net" target="_blank">omar@ecoconsulting.net</a></span></font></p>
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