Re: [EnergyPlus_Support] About the plant-condenser loops setup

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

EnergyPlus controls the chilled water supply temperature.  It cannot actively 
control the chilled water return temperature.

Mike


On 28 Apr 2005, at 1:22, energypluser wrote:

> 
> 
> Dear All:
> 
>      I find that the maximum temperature setup in "the plant-
> condenser loops" seems not be able to control the plant loop 
> temperature at all.
>      My plant loop constitution (supply side) is as follow:
>      1. a electric chiller with the nominal volumetric flow rate 
> equal to 0.007639 m^3/s, and i set the plant loop maximum volumetric 
> flow rate equal to the nominal value.
>      2. I set the maximum loop temperature equal to 15C for the 
> purpose of controlling the return water of the chiller. But after 
> simulation, the results show that the inlet water temperature of the 
> chiller is higher than 15C for many times.
>      I am sure that there is no node connection error. And the 
> electric chiller is the only plant component in the loop.Mike tells 
> me that it is impossible to controll the chiller flow rate except 
> setting the chiller into a constant flow one. But I want to keep the 
> flow rate variable and have some methods to controll the return 
> water temperature.
>      Could you please tell me the methods ?
> 
>      Thank you in advance!
> 
>                                         charlie
> 
> 
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
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> 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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