[Bldg-sim] Ground Source Heat Pump - heating mode

Kevin Kyte kkyte at robsonwoese.com
Thu Jan 10 07:03:53 PST 2008

The dictionary says the heat pump designation for heat source is an electric
air-to-air.  So I had always thought to just make the heat source be the hot
water loop fed to the heat pumps.  Although when I make the heat source a
hot water loop and zone heat source a heat pump I do not see an electric
load for space heating.  I would also be interested in learning more about



From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Vikram Sami
Sent: Thursday, January 10, 2008 9:09 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Ground Source Heat Pump - heating mode


The system I am trying to model in eQUEST is a series of heat pumps that are
connected to a ground loop heat exchanger. I set up the heat exchanger and
water loop in the water side tab. I selected the 'water loop heat pump'
option on the air side systems and assigned the ground loop to it. There is
a place on the cooling side to assign the loop to the condenser. However, I
don't see anyplace on the heating tab to assign the loop to the heating side
of the heat pump. I am also getting 46% of my heating hours outside the
throttling range (guessing this is because there is no loop attached to the
HP). Is there a fix for this? Should I be using a different system type?

Will Climate master's extension allow me to model this better? 


Vikram Sami, LEED AP 
Direct Phone 404-253-1466 | Direct Fax 404-253-1366 

1201 Peachtree Street NE, Suite 300, Atlanta, GA 30361 
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