<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>We need to see your inputs, Sir. </DIV>
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<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><A name=_MailAutoSig><SPAN style="COLOR: #1f497d; mso-fareast-font-family: 'Times New Roman'; mso-fareast-theme-font: minor-fareast; mso-no-proof: yes"><FONT face=Calibri>John R. Aulbach, PE, CEM<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></A></P>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Omar Katanani <omar@ecoconsulting.net><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> equest-users@lists.onebuilding.org<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sat, July 3, 2010 7:26:35 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [Equest-users] Space heat differs a lot between proposed and baseline<BR></FONT><BR><BR>
<P><FONT size=2>Dear all,<BR><BR>If you have a baseline and a proposed design of a school, and every single input box in the boiler specs and the hot water loop is the same in both, is it possible to get a very different space heating consumption?!<BR>This has made me crazy, one consumption is 4 times the other.<BR>I checked the schedules, schedules of operation, everything is the same! I tried a scenario where the boiler capacities are kept to default (autosize) and another scenario where I inputted the same number (1.5 MBtu/h). I am getting really different results. Is there any other variable that I may not be paying attention to?<BR><BR>The electricity consumption in the proposed is around 15% less than the baseline, but why is the gas consumption (space heating only) 4 times more?<BR><BR>Many thanks,<BR>Omar<BR><BR>___________________________<BR><BR>Omar Katanani<BR>Sustainable Design Engineer<BR>Email:
omar@ecoconsulting.net<BR><BR><BR>EcoConsulting (Lebanon)<BR>Nahas Building, 4th floor<BR>4 St-Maron Street / Georges Haddad Avenue<BR>Postal Code: 2028 5806 SAIFI<BR>Beirut, Lebanon<BR>Tel: +961 (0) 1 971 255<BR>Mobile: +961 (0) 3 045 045<BR><BR><BR>EcoConsulting (UK) Ltd<BR>28 Marshalsea Road<BR>London, SE1 1HF<BR>Tel: +44 (0)207 939 0989<BR>Fax: +44 (0)207 939 0981<BR>Website: <A href="http://www.ecoconsulting.net/" target=_blank>www.ecoconsulting.net</A><BR><BR></FONT></P></DIV></DIV></div><br>
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