[Trace-users] GSHPs in Trace 700

Dahlstrom, Aaron ADahlstrom at in-posse.com
Mon Sep 23 11:21:18 PDT 2013

Joe -

The information I have heard (from this list serv, help files, and Trane Trace) has indicated that Trace can only model one geothermal plant per TRC file.

That said, I see nothing that would prohibit you from setting up multiple systems that all reference a common plant.

However, there will be a single "compressor" modeled.

Not sure if this is a LEED model - if so, per a recent LEED review we received, GBCI has requested us to -either- use the minimum EER / COP of all relevant heat pumps as the EER/COP entered into Trace, or to conduct averaging based on the ton-hours (eg capacity, quantity, hours of operation) of each system.


Aaron Dahlstrom, PE, LEED(r) AP
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From: trace-users-bounces at lists.onebuilding.org [mailto:trace-users-bounces at lists.onebuilding.org] On Behalf Of Joe Chappell
Sent: Monday, September 23, 2013 2:06 PM
To: 'trace-users at lists.onebuilding.org'
Subject: [Trace-users] GSHPs in Trace 700


I am currently attempting to model several ground source heat pump systems on a single ground loop all in the same cooling plant.  Two of the ground source heat pumps have energy recovery and two do not.  In my analysis reports I am only seeing energy usage in "Cooling Equipment - Cooling Mode" for one of the four heat pumps.  Is Trace able to model this arrangement?  Any tips on how to handle would be greatly appreciated.


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