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<TITLE>RE: [BLDG-SIM] a qucik question about Cooling EIR -- eQuest</TITLE>
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<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Anna---</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">The EIR in eQUEST is the combined efficiency of the</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">unit</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">condenser</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> and compressor</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> while the ASHRAE code EER or SEER values are the entire packaged unit efficiency</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">. You'll notice if you enter a</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">published</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">EER or SEER in the wizard and then check the EIR output in the detailed edit mode, it does not</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">equal 3.413/EER because it is</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">n't</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> taking in</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">to account</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> the fan efficiency</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">or inefficiency depending on how you look at it</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">If you are doing a model for LEED, the way I have been</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">advised</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> to model packaged units is to enter the ASHRAE Table values in the wizard (EER or</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">SEER</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">) and let the program parse out the components of EIR and fan power. Then</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">,</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> calculate the baseline fan efficiency and enter that</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">number</FONT></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Courier New">in the detailed edit mode</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">, overriding the wizard created value</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">.</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">I have heard from members on the ASHRAE committee that Appendix G does not handle this issue very well and it seems to be something that could be refined.</FONT></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> If anyone out there has a more definitive stance on the proper way to model packaged units in eQUEST with regards to ASHRAE/Appendix G, please chime in.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Regards,</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><A NAME=""><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Andrew Craig, EIT, LEED® AP | Mechanical Designer</FONT></SPAN></A></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">INTERFACE ENGINEERING </FONT></SPAN></P>
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<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">-----Original Message-----<BR>
From: BLDG-SIM@gard.com [<A HREF="mailto:BLDG-SIM@gard.com">mailto:BLDG-SIM@gard.com</A>] On Behalf Of Anna Liu<BR>
Sent: Wednesday, August 29, 2007 11:38 AM<BR>
To: BLDG-SIM@gard.com<BR>
Subject: [BLDG-SIM] a qucik question about Cooling EIR -- eQuest</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Hello all, </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">I have a quick question about the Cooling EIR in</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">eQuest. If I got COP from ASHRAE90.1-2004 Table 6.8.1,</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">then EIR=1/COP. Does this caculation include the</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">supply fan electrical energy already or not? </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Thanks for your help. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Regards, </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Anna</FONT></SPAN></P>
<BR>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> </FONT></SPAN></P>
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