[Equest-users] Modeling of water to water heat exchanger in chilled water loops

Matthew Baron mbaron at wendelcompanies.com
Fri May 30 05:00:09 PDT 2014

My initial thought we be to assign the primary pump to the chiller, then make another circulation loop as a secondary loop to the default chilled water loop and assign pumps based on your high/low rise loop. You will need to reduce the capacity and adjust eir of your chiller to account for the loss through your heat exchanger.

Matthew J. Baron, PE
[wendel EM]

Wendel, 140 John James Audubon Pkwy, Suite 201, Buffalo, NY 14228
p 716.688.0766   f 716.625.6825   e mbaron at wendelcompanies. com   w wendelcompanies. com


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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Mayank Bhatnagar
Sent: Friday, May 30, 2014 7:47 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Modeling of water to water heat exchanger in chilled water loops

Hello all,
I am modeling a high rise office building (40 floors). In the HVAC side, the chiller has primary secondary pumping configuration. The secondary pumps will distribute chilled water to the building floors via two separate (low rise and high rise) chilled water risers. The high rise piping will be decoupled from the chiller plant via a
plate frame heat exchanger and a chilled water pump with variable frequency drive.
Any suggestion how can I modeled in equest the two separate (low rise and high rise) chilled water risers and coupling of a heat exchanger in between them?
Thanks in advance.
Mayank Bhatnagar
Sr. Energy Analyst
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