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<p class=MsoNormal><span style='color:#1F497D'>Cyrus,<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'>Depending on your internal
gains, the increased levels of roofing insulation may make it more difficult for
the system to reject the heat. I generally find this response when modeling
auditoriums or rooms with high levels of internal gains. The system ends up
working overtime to displace the heat that would normally have escaped after
the internal loads subsided and/or ambient conditions cooled off. For instance,
on a 45 degree day, the building might break even with a high internal gain and
low roof insulation, but with the higher roof insulation, the internal gains
dominate and cooling is required. It really depends on the scenario, but
without more information, I can only say that it’s plausible. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Eric</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'> </span><span style='color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><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>Cyrus
Grimes<br>
<b>Sent:</b> Friday, December 19, 2008 9:34 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Increase in roof insulation increases cooling
load.<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>In a parametric run the roofing
insulation was increased from U= 0.063 to U=0.033. by increasing the thickness
of the “Insul Bd 2in (HF-B3)” of the built up roof from 0.28 to
0.64.<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>In my results the HVAC cooling load
increased by 4% and my heating load decreased by 4%. Overall the net change was
-1% energy savings.<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>Is this reasonable?<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'> Any suggestions?<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'>thanks<o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif";
color:white;background:black;mso-highlight:black'>
Cyrus Grimes, LEED<sup>®</sup>
AP
</span><span style='font-family:"Arial","sans-serif";color:white'>.
<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif";
color:red'>
Mechanical Engineer<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:5.0pt;
font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'>Corporate Office<o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'>1108 City Park Avenue, 3<sup>rd</sup> Floor<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'>Columbus, Ohio 43206<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:5.0pt;
font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'>Phone (614) 443-1178 ext. 274<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'>Fax: (614) 443-1594<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><i><span style='font-size:6.0pt;
font-family:"Arial","sans-serif"'>e-mail: cgrimes@dynamix-ltd.com<o:p></o:p></span></i></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:5.0pt;
font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif";
color:red;letter-spacing:5.5pt'> www.dynamix-ltd.com<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:20.0pt;
font-family:Webdings;color:#007F00'>P</span><span style='font-family:"Arial","sans-serif";
color:#00007B'> </span><span style='font-size:7.5pt;color:#007F00'>Please
consider the environment before printing this e-mail note</span><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
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