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<p class=MsoNormal><span style='color:black'>eQuest automatically calculates
part load performance based on the rated condition (COP in your case) and the
performance curves that modify the power consumption based on temperature and
part-load (and other factors for other equipment…water temperatures,
etc.).<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>If you input IPLV where eQuest is
expecting a COP, you’ll be underestimating the power consumption from the
units. These inputs will often be in the form of “Energy Input
Ratio”, or EIR for many types of eQuest equipment which is the inverse of
COP.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>If you need to verify the
part-load performance that will be calculated, you can use hourly reports to
verify that using the COP and default performance curves gives a reasonable
result.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>As others mentioned, the IPLV
references a specific set of weather and load, applied to the piece of
equipment. The average annual efficiency will vary based on your actual
weather and load on the unit.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>David<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'>http://www.grummanbutkus.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Amandeep
Singh<br>
<b>Sent:</b> Thursday, December 17, 2009 3:04 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] IPLV in Heat Pumps<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello everyone,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I was working on a school model located in Lakeside,
San Diego county. The school has Bard wall mount heat pumps (capacity – 2
to 4 tons), really old one. I got manufacture data of the old and new units for
replacement. The new units data has EER, IPLV and COP ratings. I would
prefer to use IPLV instead of EER rating in case of cooling to calculate
savings. The eQuest does have options for EER and SEER but not for IPLV
in the schematic design wizard. What should I do here? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does it make sense to use IPLV instead of EER to calculate
savings for the Lakeside? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>Aman <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Amandeep Singh</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
Energy Engineer</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
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style='font-size:10.0pt;font-family:"Arial","sans-serif"'>8690 Balboa Ave,
Suite 100<br>
San Diego, CA 92123-1502<br>
858.634.4729 <span style='color:#666666'>phone</span><br>
858.244.1178<span style='color:#666666'> fax</span><br>
<a href="http://www.energycenter.org/"><span style='color:black'>www.energycenter.org</span></a><span
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<p class=MsoNormal><span lang=EN-GB style='font-size:12.0pt;font-family:"Arial","sans-serif";
color:#0070C0'>Submit your <b>SANDEE Award nomination</b> today.<o:p></o:p></span></p>
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