[Equest-users] Question: Modeling Specific Chillers

David Eldridge DEldridge at grummanbutkus.com
Wed Aug 14 09:46:08 PDT 2013

When the chiller runs on economizer it will use a separate set of curves and be modeled as a distinct chiller.

One set of curves will be difficult to model both modes of operation.

DSE Mobile

On Aug 14, 2013, at 11:34 AM, "Sunil Nair" <energymodel.sunil at gmail.com<mailto:energymodel.sunil at gmail.com>> wrote:

Hi All,

I have a couple of questions with respect to modeling specific chillers.

1) I am trying to model a centrifugal chiller with an economizer. The chiller in question is a centrifugal chiller running on R123 with an economizer installed to it. Do I just need to get data from the chiller manufacturer and input the curves into the model? Is this the right way to go?

2) How do you model multi stage centrifugal chillers without VFD's?


Sunil Nair

Ab Initio

TMA House, Plot No. 6, 2nd Floor,

Main Road, Wagle Industrial Area,

Thane (West) - 400 604


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