Re: [EnergyPlus_Support] Average COP of chillers

["Wong, S L" <bclwong@xxxxxxxxxxxx>]

I am using 1.1.0.020.

lee

At 12:10 PM 11/24/2003 -0600, you wrote:
>Are you using 1.1.0.018 or 1.1.0.020?  There was a significant bug in 
>1.1.0.018
>related to chiller part load power consumption which was fixed for the
>1.1.0.020 release.
>
>Mike
>
>
>On 24 Nov 2003, at 15:22, leeslwong wrote:
>
> > 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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>
>========================================================
>Michael J. Witte, GARD Analytics, Inc.
>EnergyPlus Testing and Support
>EnergyPlus-Support@xxxxxxxx
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