[EnergyPlus_Support] DX:coil:heatpumpwaterheater, Minimum Evaporator Temperature

["aymericnovel" <aymericnovel@xxxxxxxxx>]

Hi all,

I have been modelling a building with an air to water heat pump as 
heating plant. I used the object DX:COIL:HEATPUMPWATERHEATER, which is 
then connected to a WATERHEATER:MIXED (tank) and a FAN:ONOFF.

In the principle it works well BUT: The heat pump does not work if the 
air temperature at the evaporator is less than 5°C!! Is there any way 
to make it work at less than 5°C so that my heat pump produces heat 
during the whole winter even if COP is low?

If this is not possible, is there another way (other object) to 
simulate this kind of heat pump?

Thanks for your help,
Best regards,
Aymeric


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