Method and apparatus for controlling supplemental electric heat

Details Method and apparatus for controlling supplemental electric heat Method and apparatus for controlling supplemental electric heat

1993-03-12

1994-07-26

Ford, John K.

Heat exchange

Regenerator

Checker brick structure

165 29, 62160, 237 2B, 219486, F25B 2900

Patent

active

053320280

ABSTRACT:
In a heat pump system having supplemental heat for application to the supply air during periods of defrost operation, a "cold blow" condition is avoided by turning on a supplemental heater and by sensing the temperature of the supply air and responsively turning on additional heat in stages when necessary to maintain the temperature level of the supply air at a comfortable level.

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patent: 3006613 (1961-10-01), Coyne
patent: 3283809 (1966-11-01), Eberhart
patent: 3734810 (1973-05-01), Davis
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patent: 4462460 (1984-07-01), Braver
patent: 4474227 (1984-10-01), Reedy
patent: 4534179 (1985-08-01), Stocking et al.
patent: 4543796 (1985-10-01), Han et al.
patent: 5081846 (1992-01-01), Dudley et al.

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