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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Magnetic bearing Chillers

Rudolph Carneiro

HVAC consultant

Optimized Systems

LEEDuser Basic Member

19 thumbs up

September 26, 2012

Hello all. Does anyone have experience with justifying that the lower full load efficiency of magnetic bearing chillers is ok due to their exceptionally high IPLV? ASHRAE 90.1-2007 and ARI 550/590 1998 don't exempt or even take magnetic bearing chillers into account. ASHRAE 90.1-2010 takes them into account and allows for compliance. Can ASHRAE90.1-2010 be used as an errata for 90.1-2007 in this case?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Wed, 09/26/2012 - 18:03

I would use the guidance from 90.1-2010 to show compliance.

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