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<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">A little background on this project first. This is a bypass VAV unit with a</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">n air-source</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">heat pump</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> in the RTU</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">, with electric reheats</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">. I</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">ve modeled the building with the systemtype</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">=</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">CBVAV, which seems to do most things</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">as</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">I</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> would like them to.</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">I know CBVAV</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">s aren</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">t</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">compatible</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> with heat pumps,</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">they seem to work, for the most part</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">.</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> </SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">All my heating and cooling needs are being satisfied</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> (0.2% outside throttling range</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">–</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> confirmed in hourly reports)</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">, which seems to indicate the system is</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">using</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> the</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">heat pumps</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> properly, h</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">owever, when looking at the results,</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">eQuest is not accounting for that usage</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> in the energy totals</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">.</FONT></SPAN><SPAN LANG="en-us"> </SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">I</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">m getting way more heating energy reported than I would expect.</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">When</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> heating, the</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">energy imparted to the airstream by the coil is being</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">accounted for as essentially electric resistance (i.e.</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">EIR=1).</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">I can use the hourly reports and calculate the</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">heat pump</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> COP based off of the</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">dry bulb temp entering the coil and the OAT</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">, and then obtain the actual usage</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">.</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> That</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">s fine, and I have that working.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">However, d</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">uring cooling, the energy imparted to the airstream is not being accounted for at all (essentially EIR=</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">0).</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">I</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">m trying to calculate the COP, but the</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">heat pump</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> curves (from another project) are based off of the entering wetbulb temperature and the OAT. From what I can tell, the hourly reports don</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">t have a coil entering wetbulb temperature output, and I don</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">’</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">t think I can calculate i</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">t easily.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Has anyone run into this situation and know how you can get eQuest</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> (or DOE2.2) to cooperate, or to output a value that I can use to calculate my cooling EIR?</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Thanks,</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><B><I></I></B></SPAN><B><I><SPAN LANG="en-us"></SPAN></I></B><B><I><SPAN LANG="en-us"><FONT COLOR="#006600" FACE="Garamond">Eric O'Neill<BR>
</FONT></SPAN></I></B><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">Mechanical Engineer, LEED</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><SUP></SUP></SPAN><SPAN LANG="en-us"><SUP><FONT SIZE=1 FACE="Arial">AP<BR>
</FONT></SUP></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">Michaels Engineering<BR>
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</SPAN></I></B><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">400 Main Street, Ste 200<BR>
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