[EnergyPlus_Support] Average COP of chillers

["leeslwong" <bclwong@xxxxxxxxxxxx>]

I used the E+ version 1.1.0 to simulate my reference building with 
six identical electric air-cooled chillers. The cooling capacity of 
each chiller is 1060kw and the nominal COP is 2.8. The used part load 
curves are follow the example file of the E+ program. After 
simulation, the total annual cooling demand (chiller loop demand) is 
9196MWh and the total annual chillers' electricity consumption is 
8.8x10^2 J (2144MWh). The calculated average COP is about 3.76. The 
question is why the calculated COP of 3.76 is extremely higher the 
nominal COP I enter into the input file? Is it anything wrong in my 
input file or anything wrong in version 1.1.0 of E+? Is result will 
be more reasonable if using the version 1.1.1 of E+? Please give me 
advices.

Thanks

lee


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