[Bldg-sim] VFD Chiller in EE4

Brian Tysoe BTysoe at mcw.com
Mon Dec 20 08:53:45 PST 2010


Is there a way to take credit for using a VFD compressor on a chiller in EE4?

EE4 lets you define the chiller type, efficiency (COP), IPLV and capacity.

My VFD chiller has roughly the same COP at peak operation as my non-VFD chiller; however, the IPLV is much better because the performance at part load is more efficient. However, varying the IPLV of the chiller in EE4 does not appear to have any impact on the results whatsoever. Varying the COP affects things; however, varying the IPLV does not.

Thanks,


Brian Tysoe M.A.Sc., P.Eng., LEED AP
Mechanical Engineer

MCW Consultants Ltd. <http://www.mcw.com>
600-156 Front Street West
Toronto, ON M5J 2L6
Phone 416-598-2920
Fax 416-598-5394

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