Double-fired heating boiler

Details Double-fired heating boiler Double-fired heating boiler

1978-12-19

1980-06-10

Yuen, Henry C.

Liquid heaters and vaporizers

Fluid and solid fuel

122 2, 122149, F22B 3104

Patent

active

042067235

ABSTRACT:
A double-fired heating boiler includes first and second combustion chambers positioned within a common boiler water chamber and adapted to be fired respectively by gas or oil and by solid fuel. A collector for the combustion gases produced by the burning of the fluid and solid fuel is provided. Separate exhaust conduit systems having ancillary heat exchange surfaces are connected to the respective combustion chambers and to the collector.

REFERENCES:
patent: 1691462 (1928-11-01), Borge
patent: 2891519 (1959-06-01), Ross
patent: 3223074 (1965-12-01), Tanner et al.
patent: 3251345 (1966-05-01), Brody et al.
patent: 3329131 (1967-07-01), Wright
patent: 3736907 (1973-06-01), Agrest
patent: 4029057 (1977-06-01), Frechette

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