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Re: [EnergyPlus_Support] using two chillers in one system?

Are you autosizing your chillers? If so, each will be sized to meet the 
entire load and reducing the capacity and water flow rate by a factor of 
2 for each chiller may help. Look to the eio file for sizing results 
when autosizing equipment.

lichunying83 wrote:
>
> I have used two chillers in my model. However, I find one of them is
> seldom used through the year. It only runs for an hour in the morning,
> when the whole HVAC system starts to run in summer.
>
> My goal is to let the two chillers both run in summer and one of them
> run in winter. But the summer condition is not satisfactory.
>
> I know this might be caused by the large cooling load in the morning
> when indoor air temperature is high and quick cooling is needed. I even
> changed the cooling temperature schedule to decrease this cooling load,
> but the affection is not good. Have anyone fix this before? How?
>
> Thank you!
>
> By the way, I run the example file of ElectricChiller.idf , the result
> is similar. The little chiller will not run through the whole year.
>
>
>  

-- 
Richard A. Raustad
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University of Central Florida
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