Refrigeration system and method involving high efficiency gas de

Details Refrigeration system and method involving high efficiency gas de Refrigeration system and method involving high efficiency gas de

1990-01-31

1990-12-25

Tapolcai, William E.

Refrigeration

Processes

Defrosting or frost inhibiting

62278, 62513, F25B 4702

Patent

active

049793713

ABSTRACT:
A hot gas defrost type refrigeration system in which refrigerant used to defrost is returned to the system's refrigerant circuit after being collected and reduced in pressure, as by expansion valve means, to a pressure below the pressure in the system's return suction header, then heated as by means involving heat exchange with the system's high pressure refrigerant, the refrigerant used to defrost thus being in a superheated gaseous state and returned to the system's return suction header in such state without risk of introduction of liquid refrigerant to the system's compressor(s).

REFERENCES:
patent: 2949750 (1960-08-01), Kramer
patent: 3138007 (1964-06-01), Friedman et al.
patent: 3234754 (1966-02-01), Quick
patent: 3316731 (1967-05-01), Quick
patent: 3427819 (1969-02-01), Seghetti
patent: 3513664 (1970-05-01), Duffney
patent: 3645109 (1972-02-01), Quick
patent: 4167102 (1979-09-01), Willitts
patent: 4437317 (1984-03-01), Ibrahim
patent: 4599873 (1986-07-01), Hyde
patent: 4621505 (1986-11-01), Ares et al.
patent: 4813239 (1989-03-01), Olson

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