GSHPs in Trace 700

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Hello,

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.

Joe

Joe Chappell2's picture
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Joined: 2013-09-23
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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

Aaron Dahlstrom, PE, LEED(r) AP

Dahlstrom, Aaron2's picture
Joined: 2011-09-30
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Aaron,

To clear up any confusion, I'd like to comment on your statement on the usage of geothermal plants and TRACE 700 files. TRACE is currently capable of modeling one geothermal field (as defined in the Geothermal Loop section of Plant Controls) per alternative. Trane Customer Direct Services can help with modeling questions or capabilities questions. The support center can be reached at 608-787-3926, option 1 or cdshelp at trane.com.

Thanks,
Eric Sturm

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Right on, thanks Eric.

Aaron Dahlstrom, PE, LEED(r) AP

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Joined: 2011-09-30
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