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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Peter,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">There are two ways to model walls (and roofs) in eQUEST. To capture thermal mass effects you have to use the layer-by-layer input. Using resistance only will not account for
thermal mass.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Keith Swartz, PE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer |
<b>Seventhwave </b></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:gray">|
<b>Madison.Chicago.Minneapolis<o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">(formerly Energy Center of Wisconsin)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">608.210.7123 |
<a href="http://www.seventhwave.org/">www.seventhwave.org</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> bfountain@greensim.com [mailto:bfountain@greensim.com]
<br>
<b>Sent:</b> Wednesday, June 03, 2015 1:37 PM<br>
<b>To:</b> 'Peter Schonherr'; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Thermal mass effects<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">External shades can be modelled as “Fixed Shades” in the detailed mode.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Solar gains are indeed modelled. Have a look at the summary view for a wall construction to see the impact of changing thermal mass:
</span><span lang="EN-CA"><img border="0" width="1133" height="609" id="Picture_x0020_1" src="cid:image001.jpg@01D09E16.BC962510"></span><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<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 [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Peter Schonherr<br>
<b>Sent:</b> June-03-15 10:30 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Thermal mass effects<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA">Hello,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA"> I am new to eQuest. I am trying to model the effects of thermal mass in the external walls on space conditioning efficiency. Does eQuest take into account solar gain on the building walls? Why I ask is that I've
noticed that increasing thermal mass in the walls, (while maintaining the same R-value), has no effect on the heating load and very little on the heating demand. I also noticed that there doesn't seem to be a way to specify external shading from trees, adjacent
buildings, etc.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA">Peter<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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