Re: [EnergyPlus_Support] Error in Electrical Chiller Simulation

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

 I am not sure I completely understand the question.  High return water
temperature indicates the cooling coil flow rate is not high enough.  Check the
cooling coil inputs.  To answer your specific question, the only control you
have over chiller water flow rate is to set the chiller flow type to
"ConstantFlow", then the flow rate through the evaporator will always equal the
specified design flow rate.

Mike


On 22 Apr 2005, at 11:33, energypluser wrote:

>
>
> Dear All:
>
>      I use the electrical chiller and fancoil example file to obtain
> the annual performance of the chiller.The building environment, zone
> set point temperature and all the schedules are not changed.
>      In the chiller file, there is a controller for controlling the
> air loop temperature.But I use the fancoil unit, the controller set
> up is canceled.
>      When I look into the results of the chiller performance, I find
> that the inlet temperature of evaporator has a maximum value up to
> about 24 C, and the outlet temperature remains 7 C. So there is a
> big temperature difference in the evaporator. And I think it is not
> the actual operating conditions for a chiller.
>      I want to decrease the inlet temperature by controlling the
> chiller water mass flow rate. Is it feasible? What kind of component
> can do the job? How to set up it ?
>      And I am wondering whether I can set up some objects in order
> to let the outlet temperaure float between a range instead of
> remaining constantly. Is it doable?
>
>       Thank you in advance.
>
>                                         charlie
>
>
>
>
>
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>
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>



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




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