[Equest-users] Water Source Heat Pump Efficiencies

[Daniel Deese]

Hi all,

            I know they always say there's no such thing as a stupid question, but I've been looking through ASHRAE 90.1  table 6.8.1 as well as I know how, and I cannot find the required efficiency rating for a water source heat pump with a capacity greater than 135,000 BTU/hr.  We're trying to model Multistack heat pump/chillers, and we're using the 70-ton model, which correlates to about 840,000 BTU/hr.

            Has anyone ever modeled a water source heat pump larger than 135 MBH, and if so, which efficiency did you use?  I know I'm absolutely horrible at where's waldo, so there's a good chance I've just overlooked it.  Any help or advice is as always appreciated.  Thanks.

daniel

Daniel I. Deese, EI| CRB Consulting Engineers |
1255 Crescent Green, Suite 350 | Cary, NC 27518 |
P: 919-852-5443 | F: 919-852-5454 | X: 4543
Email: daniel.deese at crbusa.com<mailto:daniel.deese at crbusa.com>
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