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WINDOW5/6 is pretty easy to learn if you understand window systems.
This is the same tool NFRC raters use - you can use it to get whole
window U-factor and SHGC if you're not able to model the glass &
frame explicitly in the whole building simulation tool you're
using. Also, modeling the actual window size in WINDOW is more
accurate than assuming NFRC standard sizes, and is often a
significant difference.<br>
It'll take you 15 minutes after you get the hang of it.<br>
<br>
<a class="moz-txt-link-freetext" href="http://windows.lbl.gov/software/window/6/index.html">http://windows.lbl.gov/software/window/6/index.html</a><br>
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<b><font color="#000000"><small>Aleka Pappas, P.E., LEED AP</small></font></b><br>
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On 12/16/2011 7:56 AM, Dahlstrom, Aaron wrote:
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<p class="MsoNormal"><span style="font-size:12.0pt">Folks:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">A quick
survey:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Are people
using the NRFC standard rating conditions (including
standard window unit sizes per <a moz-do-not-send="true"
href="http://www.nfrc.org/documents/1997_NFRC100.pdf">http://www.nfrc.org/documents/1997_NFRC100.pdf</a>
Table 1 p15) for assembly u-factors for windows in the
Proposed Case?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I know the
ASHRAE 5.8.2.4 references the NRFC 100 test, but I’m
debating whether I should request custom calculations for my
project’s windows at their actual size, or accept
manufacturer’s standard literature based on the NRFC 100
rating sizes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I know I can
explicitly define the frame and glazing, which I prefer to
do, but sometimes it isn’t an option.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"
style="line-height:150%;text-autospace:none"><b><span
style="font-size:9.0pt;line-height:150%;font-family:"Verdana","sans-serif";color:gray">Aaron
Dahlstrom , PE, LEED® AP</span></b><o:p></o:p></p>
<p class="MsoNormal"
style="line-height:150%;text-autospace:none"><b><span
style="font-family:"AvantGarde Bk
BT","sans-serif";color:#17365D">In P</span></b><b><span
style="font-family:"AvantGarde Bk
BT","sans-serif";color:#619428">o</span></b><b><span
style="font-family:"AvantGarde Bk
BT","sans-serif";color:#17365D">sse</span></b><span
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– </span><span
style="font-size:8.0pt;line-height:150%;font-family:"Verdana","sans-serif";color:gray">A
subsidiary of</span><span
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</span><b><span
style="font-size:9.0pt;line-height:150%;font-family:"Verdana","sans-serif";color:#CC0000">AKF</span></b><span
style="font-size:9.0pt;line-height:150%;font-family:"Verdana","sans-serif";color:gray">|
1500 Walnut Street, Suite 1414, Philadelphia, PA 19102 </span><o:p></o:p></p>
<p class="MsoNormal"
style="line-height:150%;text-autospace:none"><span
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215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF:
215-735-7290</span><o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span
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<a class="moz-txt-link-abbreviated" href="mailto:ADahlstrom@in-posse.com">ADahlstrom@in-posse.com</a> | in posse web: <a
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web: <a moz-do-not-send="true"
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