Re: [EnergyPlus_Support] how to identify the "Temp rise coefficient" of Chiller:Electric

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

This can be calculated by looking at a set of performance data for the chiller 
for a range of evaporator and condenser water temperatures.  For example, say 
an electric chiller has a nominal capacity of 1000W at 6.7C Design Evaporator 
Outlet and 29.4C Design Condenser Inlet.  Find another set of water 
temperatures at which the same chiller delivers 1000W of capacity (you may have 
to interpolate to find such a point in the performance data).  For example, say 
the chiller also has a capacity of 1000W at 8C Evaporator Outlet and 32C 
Condenser Inlet.  Then the Temp Rise Coefficient would be (32-29.4)/(8-
6.7)=2.6/1.3=2.0.

Mike


On 15 Mar 2005, at 1:57, deserteagle_zhou wrote:

> 
> 
> Hi,everybody
> 
> I am studying the module Chiller:Electric now .How to identify 
> the "Temp rise coefficient" of Chiller:Electric ? How to get
> "Required entering condenser air or water temperature to maintain 
> rated capacity" and "Required leaving evaporator water outlet 
> temperature to maintain rated capacity". What do the two  parameters?
> 
> thank you very much!
> 
> 
> 
> 
> 
> 
> 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 area of the Support Web Site.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> 
> 



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




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