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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT size=3><FONT face="Times New Roman">Frank,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></FONT></P>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT size=3><FONT face="Times New Roman">You can model Thermal storage in DD mode. First, you need to create your charge schedule (type on/off). In Water-Side HVAC screen, right click the top of the side menu and select “thermal storage”. You will be asked to select charged and discharged loops. Check your operating temperatures also. I would create custom curves for the chiller (check out the article “Tools and techniques to calibrate electric chiller component models” which is available online). To do so, you need to work with a chiller vendor to generate a desent set of performance data over the range of operating temperatures. You also need to specify your chiller capacity and EIR at rated (design) conditions. It really depens on your sequence of operation. </FONT></FONT></P>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT size=3><FONT face="Times New Roman">Anybody has a better idea? </FONT></FONT><o:p><FONT face="Times New Roman" size=3> What about creating two sets of chillers, one for charging and the other one for discharging mode?</FONT></o:p></P>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT size=3><FONT face="Times New Roman">Good luck.</FONT></FONT></P></FONT></o:p>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT size=3><FONT face="Times New Roman">Ana<o:p></o:p></FONT></FONT></P>
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From: frankp.bce@sbcglobal.net<BR>To: equest-users@lists.onebuilding.org<BR>Date: Fri, 28 May 2010 11:27:03 -0400<BR>Subject: [Equest-users] Thermal Storage<BR><BR>
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<P class=ecxMsoNormal>I know that eQUEST can model ice storage, but I can’t figure out how!</P>
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<P class=ecxMsoNormal>Please help.</P>
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<P class=ecxMsoNormal>Thanks</P>
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<P class=ecxMsoNormal><B>Frank Portner, CxA, LEED-AP</B></P>
<P class=ecxMsoNormal><B>Certified Building Commissioning Professional</B></P>
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<P class=ecxMsoNormal>BC&E Engineering</P>
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