Heat pump system adaptive defrost control system

Details Heat pump system adaptive defrost control system Heat pump system adaptive defrost control system

1981-06-30

1983-02-15

Makay, Albert J.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62155, F25D 2106

Patent

active

043733492

ABSTRACT:
A defrost control system for a reverse cycle refrigeration system wherein the outdoor coil is defrosted when outdoor coil temperature is equal to or less than the product of a preselected constant N.sub.1 and the outdoor air temperature and controller means are provided to calculate a new value of N.sub.1 after each defrost operation, the calculation being based on stabilized values of outdoor air temperature and outdoor coil temperature for clear coil conditions.

REFERENCES:
patent: 4209994 (1980-07-01), Mueller et al.
patent: 4328680 (1982-05-01), Stamp, Jr. et al.
patent: 4338790 (1982-07-01), Saunders et al.

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