[Equest-users] water-econo chiller type

[Dahlstrom, Aaron]

A few folks forwarded the Dictionary text to me as well. Forgot to mention I had reviewed this and it doesn't seem to address the issue either.

The issue is that the free-cool heat exchanger heads / flow rates (in a staged plant with equipment-only pumps) don't seem to make sense - ie unexpectedly high flows with unexpectedly low heads.

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290
e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.akfgroup.com<http://www.akfgroup.com/>



From: Dahlstrom, Aaron
Sent: Wednesday, November 09, 2011 11:40 AM
To: equest-users at lists.onebuilding.org
Subject: FW: water-econo chiller type

I know the water-econo chiller type is relatively new.

Has anyone seen any documentation on its function beyond what's in context help / Topics / New Features manuals?

I'm having a hard time understanding the relationship between what I enter for flows / heads in the input file and what I am seeing in hourly reports.

Specifically the device head does not seem to increment the pump head in a one-to-one fashion, though the pumps are equipment-connected and not loop-connected. Also the chilled water pumps and condenser water pumps are reportedly running at flows higher than the PUMP-FLOW x PUMP-MAX-RATIO.

Any references would be appreciated!

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 215-735-7290
e: ADahlstrom at in-posse.com<mailto:ADahlstrom at in-posse.com> | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.akfgroup.com<http://www.akfgroup.com/>




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