[Equest-users] IPLV in Heat Pumps

John Aulbach jra_sac at yahoo.com
Sun Dec 20 18:02:09 PST 2009


As far as I am concerned, IPLV is a mythical number, like SEER. It is based on assumed levels of usage for a pumed annual usage. If your truly need part load curves, ask the manufacturer for the 75%, 50% and 25% points. You cannot evolve these four numbers out of a single mnumber (IPLV).

From: Amandeep Singh <amandeep.singh at energycenter.org>
To: equest-users at lists.onebuilding.org
Sent: Thu, December 17, 2009 1:03:45 PM
Subject: [Equest-users] IPLV in Heat Pumps

Hello everyone,
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? 
Does it make sense to use IPLV instead of EER to calculate savings for the Lakeside? 
 Amandeep Singh
Energy Engineer
8690 Balboa Ave, Suite 100
San Diego, CA 92123-1502
858.634.4729 phone
Submit your SANDEE Award nomination today.
Visit www.energycenter.org.

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