Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1976-06-16
1979-02-27
Lazarus, Ronald H.
Heat exchange
Movable heating or cooling surface
Rotary drum
236 1E, 219364, 219486, F25B 2900
Patent
active
041414080
ABSTRACT:
A supplementary heat control for a heat pump system includes thermostatic sensors on the downstream side of the heat pump heating coil. The sensors upon sensing temperature differentials in the heated air stream which indicate the need for supplemental heat operate relays. The relays, in turn, activate power input to supplementary heating coils downstream from the thermostatic sensors. A plurality of sensors are disclosed for sensing differential temperature differentials and thus permitting staging of supplementary heat.
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patent: 3006613 (1961-10-01), Coyne
patent: 3127930 (1964-04-01), Tenniswood
patent: 3167114 (1965-01-01), Swart
patent: 3261395 (1966-07-01), Foster
patent: 3318372 (1967-05-01), Shell
patent: 3385349 (1968-05-01), MacLeod
patent: 3444923 (1969-05-01), Kyle
patent: 3588471 (1971-06-01), Chambers
patent: 3867979 (1975-02-01), Carrasse
LaTulip Margaret
Lazarus Ronald H.
Rheem Manufacturing Company
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