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I changed the "chilled water loop operation" from "standby" to "demand" and ran, the cooling energy in winter suddenly disappeared! I must say that I didn't really understand the implication of "standby". Now, the result looks great. <BR>
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Thanks guys!<BR>
<BR>
Rick<BR> <BR>
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From: mike@andelmanlelek.com<BR>To: cmg750@gmail.com; cj@enersave.ca<BR>Date: Tue, 31 Aug 2010 12:36:09 -0400<BR>CC: equest-users@lists.onebuilding.org<BR>Subject: Re: [Equest-users] Strange Winter Cooling with Chiller<BR><BR>
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<P class=ecxMsoNormal><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Check your chilled water loop operation. The default is standby, so your loop is running 24/7. Pump energy is often enough of a load to the loop to require the chillers to cycle on.</SPAN></P>
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<P class=ecxMsoNormal><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Mike</SPAN></P>
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<P class=ecxMsoNormal><B><SPAN style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Carol Gardner<BR><B>Sent:</B> Tuesday, August 31, 2010 12:26 PM<BR><B>To:</B> Chris Jones<BR><B>Cc:</B> Equest User<BR><B>Subject:</B> Re: [Equest-users] Strange Winter Cooling with Chiller</SPAN></P></DIV>
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<P style="MARGIN-BOTTOM: 12pt" class=ecxMsoNormal>I wonder if the electric loads are associated with pumps for your chilled water system? I'd Google eQUEST reports to see if Marlin or others have written about this. I suspect that it's just an auxiliary load associated with moving the chilled water, or cooling tower fans, that you needn't worry about.<BR><BR>Let us know what you find out.<BR><BR>Carol</P>
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<P style="MARGIN-BOTTOM: 6pt" class=ecxMsoNormal>On Tue, Aug 31, 2010 at 9:17 AM, Chris Jones <<A href="mailto:cj@enersave.ca">cj@enersave.ca</A>> wrote:</P>
<P style="MARGIN-BOTTOM: 6pt" class=ecxMsoNormal>Check the LOOP-OPERATION - STANDBY, DEMAND-ONLY, SNAP.<BR>With STANDBY you may see electrical consumption when no system has a load.<BR><BR>At 08:12 AM 31/08/2010, YinRic wrote:</P>
<P style="MARGIN-BOTTOM: 6pt" class=ecxMsoNormal>Hi All,<BR><BR>Have you happened to meet problem with strange cooling in winter when you choose chiller as cooling source?<BR><BR>I have a typical 2-storey office building (with no extraordinary internal cooling load) modelled using eQuest. Whenever I choose "chilled water coils" as cooling source, some cooling energy appears in the "Electric Consumption" graph for Jan and Feb, although the SS-I report indicates no sensible or latent cooling energy in these two months. When I change the cooling source into "DX Coils", the cooling energy in winter simply disappeared.<BR><BR>Attempting to fix the problem, in the "air-side system" window under wizard mode, all I used are default values to avoid wrong inputs, and I chose "no heating" in winter, but the problem still exist.<BR><BR>This is a LEED project approaching deadline. If anyone could help me out, that would be greatly appreciated.<BR><BR>Thanks,<BR>Rick, LEED AP<BR>_______________________________________________<BR>Equest-users mailing list<BR><A href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target=_blank>http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</A><BR>To unsubscribe from this mailing list send a blank message to <A href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</A></P>
<P style="MARGIN-BOTTOM: 6pt" class=ecxMsoNormal><BR><BR>Chris Jones<BR>14 Oneida Avenue<BR>Toronto, ON M5J 2E3.<BR>Tel. 416-203-7465<BR>Fax. 416-946-1005<BR><BR><BR>_______________________________________________<BR>Equest-users mailing list<BR><A href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target=_blank>http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</A><BR>To unsubscribe from this mailing list send a blank message to <A href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</A></P></DIV>
<P style="MARGIN-BOTTOM: 6pt" class=ecxMsoNormal><BR><BR clear=all><BR>-- <BR>Carol Gardner PE</P></DIV><BR>_______________________________________________ Equest-users mailing list http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org To unsubscribe from this mailing list send a blank message to EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG </body>
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