[Equest-users] DOE 2.3 Water-side Economizer in Series

David Griffin II via Equest-users equest-users at lists.onebuilding.org
Thu Jul 7 09:50:05 PDT 2016


I'm working on a model which has two chillers in parallel with a water-side economizer in series to both of them; i.e. the economizer is 'upstream' and the chillers are 'downstream.'

I know DOE 2.2 will not allow this configuration to be explicitly modeled, but after some research, it appeared DOE 2.3 would (see page 83 of DOE 2.3 Manual).

When I get things setup (CHW Loop in SERIES, Chillers in DOWNSTREAM) the keyword to place the economizer UPSTREAM is unavailable, and the run errors out with "No upstream equipment specified."

I have attached the INP and PD2 file for reference. You may find it interesting in this model that I have more than one system assigned to a single zone (Thanks for adding this eQUEST team!).

Am I being overly optimistic about what DOE 2.3 can do, or am I missing something? Has anyone else tried to model this in DOE 2.3 and been successful?

Let me know.

Thanks,

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DAVID W. GRIFFIN II
BEMP
ENERGY ANALYST
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