System for producing refrigeration and a heated liquid and contr

Details System for producing refrigeration and a heated liquid and contr System for producing refrigeration and a heated liquid and contr

1978-01-26

1979-01-16

Wayner, William E.

Refrigeration

Automatic control

Of external fluid or means

62182, 62238, F25D 1706

Patent

active

041342747

ABSTRACT:
The present invention relates to a refrigeration system of the type having an air cooled condenser which includes the further capability of producing a heated liquid in a liquid cooled or, "heat recovery" condenser. The system includes compressor means for compressing a vaporized refrigerant, air cooled condenser means having fan means for forcing air in heat exchange relationship therewith, liquid cooled condenser means for producing a heated liquid, and evaporator means for expanding and vaporizing condensed refrigerant in heat exchange relationship with a refrigeration load. Control means are provided for the system and include first means for sensing the demand for heated liquid from the liquid cooled condenser, and second means responsive to the first means for reducing the capacity of the fan means in response to increased demand for heated liquid. In another aspect of the invention, the liquid cooled condenser means include control means for maintaining a desired level of condensed refrigerant therein during operation in order to insure proper subcooling thereof. A complete control circuit for the system is disclosed.

REFERENCES:
patent: 2787128 (1957-04-01), Brown
patent: 3017162 (1962-01-01), Haines et al.
patent: 3188829 (1965-06-01), Siewert et al.
patent: 3390539 (1968-07-01), Miner
patent: 3916638 (1975-11-01), Schmidt
patent: 3926008 (1975-12-01), Webber
patent: 3993120 (1976-11-01), Iberg et al.

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