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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi there,<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'>I’m going to assume you’re using eQuest and are trying
to specify window properties within.<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'>If you are using eQuest and trying to specify your window using
the ‘Simplified’ method by inputting your winter or summer U-value
for glass conductance… sorry, you’re doing it wrong =).  You
really should read the help file titled </span>GLASS-CONDUCTANCE<span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>, and
reference the table therein</span>.  <span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'>Neither summer nor winter
U-values go in that field.  It would probably be a good idea to review the
help files specific to the other inputs there as well.<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'>The following discussion may help illuminate the topic as well
(I’d suggest the help file first):  <a
href="http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/2005-October/013126.html">http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/2005-October/013126.html</a><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'>There are 3 ways to specify windows:  ‘simplified,’
selecting a best-match entry in the DOE2 library, and importing data from LBNL’s
WINDOW4/5<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'>Creating your glazing assemblies in WINDOW5 seems the hip thing
to do if you really want to lock your glazing performance down.  There’s
been discussion here on the lists that the simplified method does not correctly
model glazing performance when the sun is at an angle other than perpendicular to
the plane (where the other two methods account for this) – the results
can purportedly be significantly different, depending on your climate/building
geometries.  I personally find utilizing the DOE2 glass library to be the
easiest method, when that’s appropriate.<o:p></o:p></span></p>

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<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>~Nick</span><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img border=0 width=119 height=37 id="Picture_x0020_1"
src="cid:image001.jpg@01CB4432.00F39C90" alt="cid:489575314@22072009-0ABB"></span><b><span
style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>

<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>

<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>

<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER</span><span style='font-size:7.5pt;color:#CC9900'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>

<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Check out our new web-site @ </span></i><span style='font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt;color:blue'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue'> </span></u><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><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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Jaigath
Chandraprakash<br>
<b>Sent:</b> Tuesday, August 24, 2010 4:34 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Winter and Summer U-values for glass<o:p></o:p></span></p>

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<p class=MsoNormal><o:p> </o:p></p>

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<p class=MsoNormal>Hello,<o:p></o:p></p>

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<p class=MsoNormal> <o:p></o:p></p>

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<p class=MsoNormal>I have two U values for my glass, a winter U-value and
summer U-value. Does it mean that if my building is located in climate
zone 1 where no winter exist I should be using the summer U-value? And if
my building is in a zone where there is winter I should be using winter
U-values?<o:p></o:p></p>

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<p class=MsoNormal> <o:p></o:p></p>

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<p class=MsoNormal>Thank you in advance for replies.<o:p></o:p></p>

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<p class=MsoNormal><o:p> </o:p></p>

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