Dual source heat pump

Details Dual source heat pump Dual source heat pump

1980-04-16

1982-06-29

Makay, Albert J.

Refrigeration

Processes

Defrosting or frost inhibiting

62156, 622351, 622386, 62282, 237 2B, 165 29, 126435, 126427, F25B 2700, F25D 2110, G05D 2300

Patent

active

043366929

ABSTRACT:
What is disclosed is a heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating the fluid in heat exchange relationship with a refrigerant fluid; at least two refrigerant heat exchangers, one for effecting heat exchange with the fluid and a second for effecting heat exchange between refrigerant and a heat exchange fluid and the ambient air; a compressor for efficiently compressing the refrigerant; at least one throttling valve for throttling liquid refrigerant; a refrigerant circuit; refrigerant; a source of heat exchange fluid; heat exchange fluid circulating device and heat exchange fluid circuit for circulating the heat exchange fluid in heat exchange relationship with the refrigerant; and valves or switches for selecting the heat exchangers and direction of flow of the refrigerant therethrough for selecting a particular mode of operation. The heat exchange fluid provides energy for defrosting the second heat exchanger when operating in the air source mode and also provides a alternate source of heat.

REFERENCES:
patent: 2081479 (1937-05-01), Fink
patent: 2468626 (1949-04-01), Graham
patent: 3681933 (1972-08-01), Check, Jr.
patent: 3922876 (1975-12-01), Wetherington, Jr. et al.
patent: 4098092 (1978-07-01), Singh
patent: 4172493 (1979-10-01), Jacobs
patent: 4187687 (1980-02-01), Savage
patent: 4256475 (1981-03-01), Schafer

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