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CS-2009 EAp2:Minimum Energy Performance

Sort chiller heat pump in ASHRAE 90.1-2007

Hello all, I'm participating in a project of a building of 20 floors of offices, of which the first corresponds to shops and entrance hall. There are approximately 30000 m² conditioned by cooled chillers only cold water for cooling and heat pump chillers air cooled operating only for heating. The problem is in classifying heat pump chillers, ASHRAE Standard 90.1-2007 low, as these have centrifugal fans to reject heat from the condenser, consider working at 8.3 ° C of outdoor dry bulb temperature and have a heating capacity of 210 kW. From my point of view classified According to Table 6.8.1 Type D SPVHP equipment (heating mode). Anyway I am not clear if classified, have centrifugal fans because consumption increases and decreases considerably the final COP. On the other hand its capacity would be out of range. 2 Questions: 1) Not considered in determination of centrifugal fans and consider clasificaccion assumed COP? 2) Classify by type, but is excluded by capacity? Greetings.

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Tue, 08/14/2012 - 21:18

Direct response from USGBC: "If the question is in regard to not having a classification in ASHRAE 90.1-2007, we agree that there is no classification that specifically addresses your air cooled heat pump chiller. In this instance we recommend that you thoroughly document your assumptions and provide any additional supporting documentation to substantiate your position when submitting your project for review." Greetings.

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