Linking large scale refrigeration and heat pumps?
Wondering if there is any merit to linking refrigeration units with heat pumps.
This is in zone 6a (Maine).
It is commercial scale refrigeration (small grocery store: includes large 6 door freezer and several large multi-door coolers). The compressor is outdoors, which is great in the summer.
Come winter, the air-source split system heat pumps are used for heat. The refrigeration units dump their heat outdoors, not far from the heat pump compressor units, mounted on the exterior wall. I began wondering if it would be possible, beneficial, and cost effective to somehow capture the heat from the refrigeration units and load it into the heat pump.
I realize quite a bit more detail would be needed, but is this line of thinking at all reasonable or are we talking tiny gains for a much complication and cost?
(I’m not a HVAC person, but my initial thought is that a diverting valve could divert the hot refrigerant from the coolers to the heat pump)
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