Heat recovery system and method

Details Heat recovery system and method Heat recovery system and method

1982-09-30

1985-05-14

Bennett, Henry

Heat exchange

Movable heating or cooling surface

Rotary drum

165DIG2, 236 13, G05D 2300

Patent

active

045166285

ABSTRACT:
An air heater for recovering energy from process exhaust gases and the like includes a heat exchanger disposed in the flow of exhaust gases, a blower for supplying an independent flow of air to be heated in the exchanger and the control system including dampers, driving mechanisms and thermostats for adjusting air flow in order to maintain substantially constant heated output air temperature. One of the dampers is disposed at the outlet of the blower and adjusts, by a thermostat an appropriate drive mechanism, the volume of air supplied by the blower based on outlet temperature. A pair of dampers are connected in oppositely acting (face and bypass) fashion and adjust the proportion of air passing through or bypassing the heat exchanger, again based on the temperature of the outlet air as sensed by a thermostat.

REFERENCES:
patent: 2570859 (1951-10-01), Rasmussen
patent: 3791351 (1974-02-01), Kent
patent: 4044950 (1977-08-01), Engeling et al.

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