Hartman Loop Modeling

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Not sure if this has been covered or not, but I am looking for a way to
properly model the Hartman Loop in eQuest. I'm not sure how to do this
and was wondering if anyone could provide some insight. Thanks,

Jacob T. Blystone

Jacob T. Blystone's picture
Joined: 2011-10-02
Reputation: 0

I've encountered the same problem. It is easy to add VSD to chillers, pumps and towers. But not sure how to simulate it's control algorithm such as having each chiller simultaneously run at the same loading
rather than conventional sequence control.


----- Original Message ----

Gang Wu's picture
Joined: 2011-10-01
Reputation: 0

I am trying to determine if LEED-NC is a viable avenue for an existing

We are going to use the existing boilers and chiller.

My question is, what are the requirements for the existing boiler and
chiller efficiencies. Do we have to meet the performance requirements
of section 6 in 90.1?

Does anyone have experience with this?

Timothy Howe, MS, LEED AP

Howe, Timothy's picture
Joined: 2011-09-30
Reputation: 0