Modeling Centralized Water-to-Water HP's and Hybrid HP's

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I am using a Canadian-based energy modeling software called EE4 which uses DOE calculation engine. I am trying to model a centralized water-to-water Heat Pumps System that provides hot water to distributed hybrid heat pumps (hybrid heat pump is fan coil in heating mode and heat pump in cooling mode). The hybrid heat pumps uses ground to reject heat when in cooling mode. The centralized water-to-water heat pumps provide chilled water for the make-up air units cooling coils. The Make-up air units heating coils are fed directly from the boiler. EE4 would not allow me to use a combination of these two systems. Does anyone have a work-around to this type of system.
I would really appreciate any input in this regards.

Ahmed Azhari2's picture
Joined: 2011-09-30
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