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<p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt;color:black">Take a peek at the LS-C report in the *.sim
output file, this may help give you an idea what percentage of the building
heating and cooling loads are due to the windows.</span></font></p>
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<p class="MsoNormal"><font size="2" color="black" face="Calibri"><span style="font-size:11.0pt;color:black">David</span></font></p>
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</span></font></u></p>
<p class="MsoNormal"><font size="1" color="black" face="Calibri"><span style="font-size:8.0pt;color:black"> </span></font></p>
<p class="MsoNormal"><font size="2" color="#1f497d" face="Calibri"><span style="font-size:11.0pt;color:#1F497D">David S. Eldridge, Jr., P.E., LEED AP BD+C,
BEMP, HBDP</span></font></p>
<p class="MsoNormal"><b><font size="2" color="#244061" face="Calibri"><span style="font-size:11.0pt;color:#244061;font-weight:bold">Grumman/Butkus
Associates</span></font></b><font size="1" color="gray"><span style="font-size:
9.0pt;color:gray"></span></font></p>
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<p class="MsoNormal"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;
font-family:"Tahoma","sans-serif";font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] <b><span style="font-weight:
bold">On Behalf Of </span></b>Brett M. West<br>
<b><span style="font-weight:bold">Sent:</span></b> Monday, November 08, 2010
3:38 PM<br>
<b><span style="font-weight:bold">To:</span></b>
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight:bold">Subject:</span></b> [Equest-users] Window Comparison</span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"> </span></font></p>
<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt">I
am doing a model for a two story office building with the windows making up
approximately 30% of the building’s exterior. My goal is to find what
type of energy savings the owner can expect by replacing all the existing
single pane windows with double pane, low e windows. When I change the window
type to a double pane low-e window I am seeing savings that are very small,
around 3% of the total building kWh.</span></font></p>
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<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt">For
reference, the buildings HVAC system consists of two air handlers (one per
floor) ducted to a VAV system with hot water reheat. </span></font></p>
<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt"> </span></font></p>
<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt">Has
anyone else tried to do this type of comparison and if so what type of energy
savings did you find? I have attached my model pd2 and inp files for reference.
Thanks in advance for any information.</span></font></p>
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<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt"> </span></font></p>
<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt">Brett
West</span></font></p>
<p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
11.0pt;font-family:"Times New Roman","serif""> </span></font></p>
<p class="MsoNormal"><font size="3" face="Calibri"><span style="font-size:12.0pt">RMF
Engineering, Inc</span></font><b><font size="3" face="Times New Roman"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";font-weight:bold"></span></font></b></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt;font-family:"Times New Roman","serif"">Ph: 843.971.9639</span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt;font-family:"Times New Roman","serif""><a href="mailto:bwest@rmf.com">bwest@rmf.com</a> </span></font></p>
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