Re: [EnergyPlus_Support] Average COP of chillers

["Michael J. Witte" <mjwitte@xxxxxxxx>]

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
> 
> 
> 
> To unsubscribe from this group, send an email to:
> EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the appropriate folder
> in the Files are of the Support Web Site.
> 
> 
> 
> 
> 
> 
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 
> 



========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx


------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada.
http://www.c1tracking.com/l.asp?cid=5511
http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/dkFolB/TM
---------------------------------------------------------------------~->

To unsubscribe from this group, send an email to:
EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files are of the Support Web Site.




 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/