[BLDG-SIM] Heat Pump COP

Aulbach, John jaulbach at nexant.com
Thu Oct 11 14:25:08 PDT 2007

In eQuest, the Energy Input Ratio (EIR) can be derived from EER or COP
given for a unit or from a Standard. To correctly model such a unit, one
must subtract the fan energy for the unit to obtain the EER (EIR) of the
compressor only. This improves the input from, say, a COP of 12.3 to 15.
What about in the case of the heat pump heating COP? Must one subtract
out the fan energy here as well, thus "worsening" the COP for the
heating side?
I cannot find anything written on this subject.
John R. Aulbach, PE, CEM
Project Manager
Nexant, Inc.
100 North Barranca, Suite 820
West Covina, CA 91791 USA
Phone: 626-430-9054
Fax: 626-430-9060
email: jaulbach at nexant.com

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