Boilers

Details Boilers Boilers

1978-02-16

1979-10-16

Sprague, Kenneth W.

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

122182S, F22B 712

Patent

active

041709632

ABSTRACT:
A boiler has a cylindrical firebox surrounded by a water jacket which, in turn, is surrounded by a hot water boiler. The firebox has a cylindrical primary furnace, in which a burner for liquid or gaseous fuel is located, and a cylindrical secondary furnace which is of greater diameter than the primary furnace. Combustion gases are removed from the secondary furnace through fire tubes arranged in a circular array around the fire box and extending axially thereof through the water jacket. The water jacket and hot water boiler are separated by a partition which lies against the circular fire tube array inside the water jacket.

REFERENCES:
patent: 2568781 (1951-09-01), Watts
patent: 2787256 (1957-04-01), Ilane
patent: 3007457 (1961-11-01), Ospelt

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