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<DIV dir=ltr align=left><SPAN class=904061323-17102008><FONT face=Arial
color=#0000ff size=2>Kazim:</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=904061323-17102008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=904061323-17102008><FONT face=Arial
color=#0000ff size=2>What type of HVAC system do you have? If it is a VAV,
it sounds like your system is functioning fine (summer is when VAV matching
wreaks havoc).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=904061323-17102008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=904061323-17102008><FONT face=Arial
color=#0000ff size=2>Check your winter outside air, window type, operating hours
(do you heat at night ??).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=904061323-17102008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=904061323-17102008>
<DIV align=left>
<DIV align=left><FONT color=#0000ff>John R. Aulbach, PE, CEM</FONT></DIV>
<DIV align=left><FONT face=Arial size=2><EM>Project Manager</EM></FONT></DIV>
<DIV align=left><FONT face=Arial size=2><FONT color=#0000ff>Nexant,
Inc</FONT>.</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>701 West Kimberly Ave., Suite
245</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Placentia, CA 92870-6342
USA</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Phone: 714-524-4402</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Fax: 714-524-4407</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>email: <A
title=mailto:jaulbach@nexant.com
href="mailto:jaulbach@nexant.com">jaulbach@nexant.com</A></FONT></DIV>
<DIV> </DIV></DIV></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Kazim
Mirza<BR><B>Sent:</B> Friday, October 17, 2008 3:56 PM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim] Benchmarking the
billing data.<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr>
<DIV>Hello All,</DIV>
<DIV>
I am modelling an 124,000sqft five storied building in eQUEST 3.61. I am
benchmarking the model's electricity, demand and gas use using the actual
billing usage. I am able to benchmark the electricity and demand use but
not the gas usage. I am able to get pretty good streamlining in summer but not
in winter. In winter the total therms is up by 154% of the normal billing
usage.</DIV>
<DIV> </DIV>
<DIV>Does eQUEST overestimates the gas usage.</DIV>
<DIV> </DIV>
<DIV>Any clue, help or direction would be appreciated.</DIV>
<DIV> </DIV>
<DIV>Thanks in advance,</DIV>
<DIV>Kazim Mirza</DIV>
<DIV>Energy Engineer</DIV>
<DIV>UDIAC</DIV></DIV></BODY></HTML>