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[EnergyPlus_Support] Usage of chilled water return to supply another system



Greetings,

I am not sure whether how to model this system correctly:
The chiller is supplying 42 F chilled water with 54 F return.  When 
outside air web bulb temperature is above 57 F, part of the return 
chilled water (54 F) is applied to another HVAC system as chilled 
water supply.

When outside air web bulb temperature is below 57 F, the return 
chilled water goes back to the chiller. 

My initial thought is to build a separate case for the condition 
above 57F, which specifies the returned chilled water as an inlet for 
another HVAC system.

Any suggestions would be greatly appreciated.

Thanks.

Eric (Miao)




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