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Re: [EnergyPlus_Support] Modulate Flow Through Water-cooled VRF Condenser Inlet





Yes, the VRF model uses design condenser water flow rate when the system operates.

On 7/14/2015 1:18 PM, noahpflaum@xxxxxxxxx [EnergyPlus_Support] wrote:

It looks like in EnergyPlus for water-cooled VRF that if there is a load on the AirConditioner:VariableRefrigerantFlow object then the water flow rate through the condenser inlet will be the full design flow rate. I understand that this is traditionally how most VRF systems work, however manufacturers (I know LG does this) are starting to modulate flow through the VRF condenser inlet. This allows for the pumps to turn down and the higher return water temperature from lower flow gets passed on as greater load on the cooling tower. Can anyone confirm that the EnergyPlus water-cooled VRF module will demand full flow for any load? If not, could you please correct me?


-- 
Richard Raustad
Florida Solar Energy Center
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Cocoa, FL 32922
Ph: (321)638-1454
http://www.fsec.ucf.edu/en/

Program Director
Electric Vehicle Transportation Center
http://evtc.fsec.ucf.edu/


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Posted by: Richard Raustad <rraustad@xxxxxxxxxxxx>


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