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Re: [EnergyPlus_Support] The problems about multiple chillers.

EnergyPlus autosizing does not understand multiple pieces of equipment.  It 
will size each piece to meet the full load, in this case both chillers.  
Whenever you use multiple boilers, chillers, or cooling towers, follow this 
procedure:

1.  Run the simulation with the plant equipment autosized.

2.  Find the reported equipment capacities (for chillers, boilers, etc.) in the 
eio output file.  The capacity of any one chiller or boiler will be the full-
load capacity.  (You should see the same capacity reported for each chiller, 
for example.)

3.  Make a new version of the input file with hard sizes specified as needed to 
allocate the full-load capacity among the chillers (or boilers, or . . .).

Mike


On 28 Mar 2007 at 3:37, well_kong wrote:

> I made a model that includes two chillers,and i used design objects to 
> autosize the chillers; but i always find that only one chillers 
> work,another never work.
> You know in actual case,it's so different between two chillers work and 
> one chiller works.
> Who can tell me why?and how to solve this problem.


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





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