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<p class="MsoNormal"><span style="color:#1F497D">Hi Kate,<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">This isn’t very odd, although the typical peak cooling load would occur in July but there are other factors that would affect this such as building rotation, envelope materials, ventilation type, infiltration
rate, occupancy schedules (holidays)…etc<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">The sun path over the Fall faces the side walls of the building more than it would in the Summer when the sun path is more perpendicular to face the roof. For example; if you have a well-insulated roof and walls
with bad U-value materials then you should expect a higher heat loss in the Fall due to heat loss by convection = Higher Cooling Load.<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">This also depend on the location of the project, in some hot areas the climate temperature doesn’t differ much in Sept from July.<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">I hope this help.<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">Regards,<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:#1104BC">Khaled Fouda, LEED GA<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">Integrated Energy Concepts Engineering, P.C.
</span><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:#2F5496"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1104BC">Rochester Office:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">3445 Winton Place, Suite 240</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#2F5496"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">Rochester, New York 14623</span><span style="color:#2F5496"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">Phone: 585-272-4650 ext.29</span><span style="color:#2F5496"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">Toll Free: 866-666-4626<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">eFax: 718-228-5154<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496"><a href="mailto:kfouda@nrg-concepts.com"><span style="color:#0563C1">kfouda@nrg-concepts.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><a href="https://www.linkedin.com/company/integrated-energy-concepts-engineering-pc?trk=nav_account_sub_nav_company_admin"><span style="color:blue;text-decoration:none"><img border="0" width="24" height="24" id="Picture_x0020_2" src="cid:image001.gif@01D18427.23C0BD80" alt="linked in"></span></a><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Hap-users [mailto:hap-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Kate Mayberry<br>
<b>Sent:</b> Tuesday, March 22, 2016 8:35 AM<br>
<b>To:</b> hap-users@lists.onebuilding.org<br>
<b>Subject:</b> [Hap-users] Time of Design Peak Load<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-CA">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">I don’t know if this has happened to anyone else in their HAP calculations. But I built a project in HAP, and the cooling design peak load is occurring at September (with small loads) when it normally should be occurring
in July. I am not sure why the calculations are doing that. Has anyone else run into this problem?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="mso-fareast-language:EN-CA">Thanks and Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="color:#1F497D;mso-fareast-language:EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="color:#1F497D;mso-fareast-language:EN-CA">Kate Mayberry</span></b><span lang="EN-CA" style="color:#7F7F7F;mso-fareast-language:EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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