Refrigeration and heating cycle system and method

Details Refrigeration and heating cycle system and method Refrigeration and heating cycle system and method

1998-07-31

2000-09-05

Bennett, Henry

Refrigeration

Automatic control

Refrigeration producer

62140, 62156, 622281, F25B 4104

Patent

active

061125342

ABSTRACT:
An Improved Refrigeration System and Heating/Defrost Cycle is disclosed. The system, for heating circulating air and defrosting an enclosed area, includes a refrigerant, an evaporator using said refrigerant for heating the circulating air; and a compressor for receiving the refrigerant from the evaporator and compressing the refrigerant to a higher temperature and pressure. Advantageously, the system further includes the combination of an expansion valve positioned between the compressor and the evaporator for forming a partially expanded refrigerant, a controller for sensing system parameters, and a mechanism responsive to said controller, based on the sensed parameters, for increasing temperature differential between the refrigerant and the circulating air, for improving system efficiency and for optimizing system capacity during heating and defrost cycles.

REFERENCES:
patent: 4352272 (1982-10-01), Taplay
patent: 4916913 (1990-04-01), Narikiyo
patent: 4977751 (1990-12-01), Hanson
patent: 5182920 (1993-02-01), Matsuoka et al.
patent: 5201185 (1993-04-01), Hanson et al.
patent: 5596878 (1997-01-01), Hanson et al.
patent: 5907957 (1999-06-01), Lee et al.

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