Supplement system for transferring heat from a furnace exhaust s

Details Supplement system for transferring heat from a furnace exhaust s Supplement system for transferring heat from a furnace exhaust s

1989-01-19

1990-07-03

Bennet, Henry A.

Liquid heaters and vaporizers

Subsidiary

126365, 237 19, 237 55, 237 8R, F22B 3300

Patent

active

049381725

ABSTRACT:
A supplementary hot water heating system which transfers to a hot water tank heat from exhaust gas in the furnace stack which would otherwise be wasted. When the water in the supplementary heater core is heated to a desired temperature, normally closed valves, one connecting the heater core to the cold waterline and the other connecting the bottom of the hot water tank to a drain, are simultaneously opened and remain opened until the supplementary heater core is again filled with cold water from the cold water line.

REFERENCES:
patent: 4136731 (1979-01-01), De Boer
patent: 4417546 (1983-11-01), Hoskinson

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