[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[BLDG-SIM] Heat Pump COP

Yes and no. The energy is "removed," but the COP improves because the fan heat had a COP of 1.0, and is included in the rated gross kW in and Btuh out. I think the T24 ACM may have a "method" or formula.


From: Aulbach, John
Sent: Thu, 10/11/2007 3:25pm
To: BLDG-SIM@xxxxxxxx
Subject: [BLDG-SIM] Heat Pump COP

Folks:
 
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.
 
Thanks.
 
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
 
 
h@xxxxxxxxxxxxx received this e-mail because you are subscribed
to the BLDG-SIM@xxxxxxxx mailing list.  To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@xxxxxxxx



======================================================
You received this e-mail because you are subscribed 
to the BLDG-SIM@xxxxxxxx mailing list.  To unsubscribe 
from this mailing list send a blank message to 
BLDG-SIM-UNSUBSCRIBE@xxxxxxxx