Heat exchange control system

Stoves and furnaces – Hot-air furnaces – Compressed air

Patent

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Details

122 4R, 431208, F24H 600

Patent

active

041354877

ABSTRACT:
A heat exchange system is provided having first and second heat exchangers connected to one another. A burner supplies products of combustion to the first heat exchanger. Fluid heated in the first heat exchanger is pumped to the second heat exchanger. A blower forces air over the second heat exchanger to heat the air. An electric heater is provided in heat exchange relationship with the first heat exchanger. The electric heater maintains the temperature of the fluid in the first heat exchanger above the effective dew point of the flue gas in the heat exchanger.

REFERENCES:
patent: 2707989 (1955-05-01), Schori
patent: 3302705 (1967-02-01), Witten, Jr.
patent: 3704748 (1972-12-01), Hapgood
patent: 3706303 (1972-12-01), Hapgood
patent: 3734402 (1973-05-01), Morgan
patent: 3800747 (1974-04-01), Hapgood
patent: 3830221 (1974-08-01), Hapgood
patent: 3887325 (1975-06-01), Finger et al.

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