Refrigeration – Processes – Compressing – condensing and evaporating
Patent
1991-07-12
1993-05-18
Rivell, John
Refrigeration
Processes
Compressing, condensing and evaporating
62201, 622386, F25B 502
Patent
active
052110230
ABSTRACT:
An apparatus and a method for heating and cooling with a refrigerant wherein the refrigerant is compressed by a compressor, and circulated to and from the compressor through a condenser, an expansion valve and an evaporator, in this order. A first fluid is heated with the heat generated in the condenser, and a second fluid is cooled with the cooling effect or cold generated in the evaporator. When heat is low and a temperature of the first fluid is decreased, the flow passages of the refrigerant are changed from entering into the evaporator to entering into a second heat-exchanger wherein the refrigerant is heated, and the heated refrigerant is entered into the compressor and circulated. When the cooling effect or cold is low and a temperature of the second fluid is increased, the flow passages of the refrigerant are changed from entering into the condenser to entering into a first heat exchanger wherein the refrigerant is cooled, and the cooled refrigerant is entered into the evaporator and circulated.
REFERENCES:
patent: 3017162 (1962-01-01), Haines et al.
patent: 4502292 (1985-03-01), Ares et al.
patent: 4592206 (1986-06-01), Yamazaki et al.
patent: 4646537 (1987-03-01), Crawford
Rivell John
Union Kogyo Kabushiki Kaisha
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