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A heat transfer and storage system for heating and cooling an enclosure, and including a heat pump having an indoor coil and an outdoor coil and a heat storage facility. The system can be operated to exchange heat between a refrigerant fluid from the heat pump and a heat transfer fluid from the heat

A heat transfer and storage system for heating and cooling an enclosure, and including a heat pump having an indoor coil and an outdoor coil and a heat storage facility. The system can be operated to exchange heat between a refrigerant fluid from the heat pump and a heat transfer fluid from the heat storage facility, between the refrigerant fluid and ambient air, and between the heat transfer fluid and ambient air. In a preferred embodiment an integrated three medium heat exchanger is utilized in association with the outdoor coil of the heat pump and a water coil operatively connected to a water tank; and the three medium heat exchanger can effect heat exchange between the refrigerant and the water, between the refrigerant and outdoor air, and between the water and outdoor air.

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A heat transfer and storage system for heating and cooling an enclosure, comprising: a compressor for compressing vaporous refrigerant; an indoor heat exchange coil located inside the enclosure; a refrigerant expansion device; a refrigerant flow reversing means; a three medium heat exchanger located

A heat transfer and storage system for heating and cooling an enclosure, comprising: a compressor for compressing vaporous refrigerant; an indoor heat exchange coil located inside the enclosure; a refrigerant expansion device; a refrigerant flow reversing means; a three medium heat exchanger located outside the enclosure and including a second heat exchange coil, a third heat exchange coil, heat transfer means thermally connecting the second and third coils, and means to pass ambient air over the second and third coils; first connecting means connecting the compressor, the indoor heat exchange coil, the refrigerant expansion device, the refrigerant flow reversing means, and the second heat exchange coil to form a reversible, vapor compression refrigeration system for transferring heat between the indoor coil and the three medium heat exchanger; a heat storage facility for storing a heat transfer fluid; and second connecting means connecting the heat storage facility and the third heat exchange coil, wherein the heat transfer fluid circulates and transfers heat between the heat storage facility and the three medium heat exchanger.