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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thank you Keith. Your advice solved a
problem in my project which involves GSHP with a backup boiler. <o:p></o:p></span></font></p>
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10.0pt;font-family:Arial;color:navy'>Can any one please suggest possible
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Keith Swartz<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, April 05, 2011 8:06
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Vipul Babriya;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users] Engine
Driven Chiller-Gas Cooling Modeling</span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:black'>Vipul,</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Does the air system have an airside economizer? If so, did
you change the economizer low limit in the detailed interface? (Only the upper
limit can be changed in the wizard, not the low limit.) The default is 40F, so
whenever it gets colder than that outside and there is still a cooling load
from internal heat sources, the economizer will shut off and the chiller will
come on to meet the load. The smallest number you can enter is 0, but if you
delete the 40 and leave the field blank, then there will be no lower limit. See
the help screen.</span></font><o:p></o:p></p>
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Energy Engineer / Senior Project Manager<br>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Vipul
Babriya [vipulbabriya@aol.com]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, April 05, 2011
11:12 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] Engine
Driven Chiller-Gas Cooling Modeling</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Hello All,<br>
<br>
I am modeling engine driven chiller in eQUEST for multifamily residential
building which has Natural Gas as fuel.<br>
I have entered HIR at rated conditions into chiller property window in DD mode.
Chiller is the only source for cooling in the model.<br>
When i ran the simulation, i would get space cooling usage in winter months. I
don't understand why am i getting space cooling during winter months. <br>
Do anybody has any idea ?<br>
<br>
Thanks,<br>
Vipul<o:p></o:p></span></font></p>
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