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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Pranita,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>U-value is the inverse of R value. A U-30 is the equivalent of
R-0.03. Likewise, if you have an R-30 roof, you would have a U-(1/30) =
U-0.03. Is it possible you entered in R-value where you were meant to enter U?
I would check, and maybe try to change what you’ve entered.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Be careful about which units you’re using, though. I think
the wizards use IP units, but the INP file has metric? Not sure. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Good luck!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Alex<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#262F13'>Alex
Krickx<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:gray'>Building Energy Specialist<o:p></o:p></span></p>
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style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>1250 Elko Dr, Sunnyvale, CA 94089<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>(t) 408.541.8124<o:p></o:p></span></p>
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color:gray'><o:p> </o:p></span></p>
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color:#1F497D'>Warning:</span></i></b><i><span style='font-size:7.5pt;
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color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>pranita
kothuru<br>
<b>Sent:</b> Tuesday, October 12, 2010 11:47 AM<br>
<b>To:</b> equest-users<br>
<b>Subject:</b> [Equest-users] U value (Building envelope Construction)<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello All -<br>
<br>
I don't know whether I am understanding the R value input in eQuest in the way
its supposed to be.<br>
<br>
In the Building Envelope Constructions <b>(3-25) in the DD Wizard:</b><br>
<br>
Construction: Custom, layer by layer construction<br>
<br>
Layer-by layer: Arena Roof (name of the roof I have created)<br>
<br>
In the layer by layer window I use the 'Specify Resistance' (under the spec
method) option and insert the overall R value of the roof directly below in the
box. <br>
<br>
When I go to the.inp file, I see the following -<br>
<br>
"EL1 Roof Construction" = CONSTRUCTION<br>
TYPE =
U-VALUE<br>
U-VALUE = 30<br>
ABSORPTANCE = 0.6<br>
ROUGHNESS = 1<br>
<br>
It says the U -value is 30 which is really low. Am I missing something here in
understanding the U-value and R value. (I have inserted the r value as 30 not
the U value)<br>
<br>
Thank you for your comments in advance.<br>
-- <o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><b><span style='font-family:"Calibri","sans-serif";
color:#000099'>Pranita.</span></b><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
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