Preheater device for hot water heaters

Details Preheater device for hot water heaters Preheater device for hot water heaters

1978-02-21

1979-11-27

Sprague, Kenneth W.

Liquid heaters and vaporizers

Subsidiary

122412, 122421, F22B 118, F22D 100

Patent

active

041755189

ABSTRACT:
A preheating device for hot water heaters which employs hot gases of combustion from the flue to preheat incoming cold water and to continually preheat water stored in the water tank by natural recirculation. Use of the device provides for increased fuel efficiency because hot combustion gases from the heat source are used for warming of water before venting to the atmosphere, the result being an average increased temperature within the tank so that lesser amounts of fuel are required to reach any desired hot water temperature.

REFERENCES:
patent: 1113003 (1914-10-01), Griffin
patent: 2521462 (1950-09-01), Kinzelmann
patent: 3916991 (1975-11-01), Trump
patent: 3987761 (1976-10-01), Downs et al.
patent: 4037567 (1977-07-01), Torres
patent: 4043014 (1977-08-01), Wilson

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