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<meta content="MSHTML 6.00.2900.2963" name="GENERATOR"></head><body style="font-family: times new roman,new york,times,serif; font-size: 12pt;">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.<br><br><br><hr><b>From: </b>Aulbach, John<br><b>Sent: </b>Thu, 10/11/2007 3:25pm<br><b>To: </b>BLDG-SIM@gard.com<br><b>Subject: </b>[BLDG-SIM] Heat Pump COP<br><br>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2">Folks:</font></span></div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2">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.</font></span></div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2">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?</font></span></div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2">I cannot find anything written on this
subject.</font></span></div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2">Thanks.</font></span></div>
<div dir="ltr" align="left"><span class="957342121-11102007"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="957342121-11102007">
<div align="left">
<div align="left"><font color="#0000ff">John R. Aulbach, PE, CEM</font></div>
<div align="left"><font face="Arial" size="2"><em>Project Manager</em></font></div>
<div align="left"><font face="Arial" size="2"><font color="#0000ff">Nexant,
Inc</font>.</font></div>
<div align="left"><font face="Arial" size="2">100 North Barranca, Suite
820</font></div>
<div align="left"><font face="Arial" size="2">West Covina, CA 91791 USA</font></div>
<div align="left"><font face="Arial" size="2">Phone: 626-430-9054</font></div>
<div align="left"><font face="Arial" size="2">Fax: 626-430-9060</font></div>
<div align="left"><font face="Arial" size="2">email: <a title="mailto:jaulbach@nexant.com" href="mailto:jaulbach@nexant.com">jaulbach@nexant.com</a></font></div>
<div> </div></div></span></div><pre>
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