Water Source Heat Pump - Heat Rejection

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Hello all,

The building that I am trying to model has two areas - Admin and server
areas. We are serving the server area using chilled water CRAC units.
The admin are will be served by water source heat pumps, but instead of
using the condenser water loop for heat rejection, we want to use the
chilled water return from the CRAC units. I am trying to run the same in

The difficulty is that by default Trace allows you to reject heat from
water source heat pumps to cooling towers. On the Cooling equipment tab
for create plants, Trace populates only the list of cooling towers for
the heat rejection type. Is there a way to do this in Trace?


Radhika Gundavelli

Radhika Gundavelli's picture
Joined: 2011-10-01
Reputation: 0

Please let me know if you find the answer.

Jeurek's picture
Joined: 2010-10-07
Reputation: 0


You can switch the heat rejection to be to a cooling plant by clicking on the Controls button when you are on the Cooling Equipment tab. It will not be to the return water, but it will be to the cooling plant.

See screenshot below.


[cid:image001.png at 01CB13A3.6E8136B0]

sparker's picture
Joined: 2010-10-13
Reputation: 1

Thanks Scott! That worked.

Radhika Gundavelli's picture
Joined: 2011-10-01
Reputation: 0