Refrigerating machine including energy conserving heat exchange

Details Refrigerating machine including energy conserving heat exchange Refrigerating machine including energy conserving heat exchange

1979-04-16

1981-06-02

Tapolcai, Jr., William E.

Refrigeration

Automatic control

Of external fluid or means

62184, 62196B, F25D 1706

Patent

active

042703638

ABSTRACT:
An improved commercial cube/crushed ice making machine includes a refrigeration unit having a water-to-refrigerant heat exchange condenser operatively connectible to an external water supply for heating water therein. The condenser provides for improved efficiency in the refrigeration unit over a conventional air-cooled condenser. Also, the water heating capability of the ice-making machine preferably functions as a secondary heat source for the external water supply, thus providing savings in energy costs for the primary water heating source. Further, the heat exchange relation between the refrigeration unit and the external water supply is determined by an improved control system which is responsive to both a refrigerant pressure at the condenser refrigerant outlet, and the water temperature at the condenser water outlet for controlling water flow through the condenser while maintaining a pre-determined refrigerant pressure in the heat exchange means.

REFERENCES:
patent: 2142734 (1939-01-01), Polley
patent: 2572582 (1951-10-01), Andrews
patent: 2751761 (1956-06-01), Borgerd
patent: 3301002 (1967-01-01), McGrath
patent: 3922876 (1975-12-01), Wetherington, Jr. et al.
patent: 3926008 (1975-12-01), Webber
patent: 4041726 (1977-08-01), Mueller et al.
patent: 4134274 (1979-01-01), Johnsen

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