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<p class=MsoNormal><span style='color:#1F497D'>I got the review comment back
from LEED that I needed to use the window assembly U-Value and SC Value, not
the center of glass. Unfortunately we have the problem, and it sounds
like others do too on this forum, that the glass manufacturer gives values for
the center of glass values, and then sells their glass to the frame guys to get
the frames that the owner and architect want. Neither one is willing to
NFRC certify their product. So, my options are to use the values in ASHRAE
90.1-2007 Table A8.2 which are horrible, or model the windows on LBNL
Window5. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>There are lots of windows and
lots of different sizes of windows in the model, so my plan is to find the area
(square feet) of each window, and then run Window5 on typical windows in 5
square foot increments (5, 10, 15, 20, etc. square foot windows) so that I can
run 10 windows instead of 150, and then put it all in a spreadsheet and solve
for the weighted averages.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>If I put the weighted average of
the window values into Equest, will they accept that? Has anyone ever
tried it? I’m in the process of doing another LEED certification
that will be using the same technique if it works, but I won’t know if it
was accepted in the first instance before I submit the second project.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='color:#1F497D'>-Jason<o:p></o:p></span></p>
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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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