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[EnergyPlus_Support] NREL reference buildings
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- Subject: [EnergyPlus_Support] NREL reference buildings
- From: "wenzelm75513" <mike.wenzel@xxxxxxx>
- Date: Tue, 31 May 2011 19:41:23 -0000
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- Delivery-date: Tue, 31 May 2011 13:41:27 -0600
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I am currently using the NREL reference buildings for benchmarking. Specifically I am using the large office building post 1980 construction. I am performing the simulations on a minutely basis on a summer day in Miami. The building has 2 water cooled chillers. During the day the partload ratio of the chillers go up; However, the COP goes up "faster" than the partload ratio. The result of this behavior is a chiller that uses less electrical energy at 90% load than 60%. Note that I said it uses less electricity and not that it has higher efficiency. Could someone help me understand the non-intuitive behaviour? Does anyone have experience using these reference buildings? Any help would be appreciated. I don't want to change the chiller model parameters as this is a benchmark building, yet I do need to understand this behaviour.
Thanks,
Michael
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