Defrost control for heat pumps

Details Defrost control for heat pumps Defrost control for heat pumps

1977-01-31

1978-08-08

Wayner, William E.

Refrigeration

Processes

Defrosting or frost inhibiting

62140, 62154, F25D 2102

Patent

active

041048881

ABSTRACT:
A control system for monitoring frost accumulation on the coil of a heat pump. An operational parameter of the heat pump compressor responsive to frost accumulation, such as compressor current, is compared to a reference level developed during a non-frost condition of the coil to initiate and terminate coil defrosting in response to a predetermined variation between the operational and reference parameter levels.

REFERENCES:
patent: 3474638 (1969-10-01), Dodge

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