Flue for water heater

Details Flue for water heater Flue for water heater

1995-06-16

1996-12-31

Kamen, Noah P.

Liquid heaters and vaporizers

Stand boiler

Fluid fuel burner

1221555, F22B 500

Patent

active

055883990

ABSTRACT:
A water heater has one or more flue openings through the tank to allow flue gases to pass through the tank and heat water in the tank. The flue openings are constricted at two or or more discrete locations. The transitions between the several sizes of the flue opening cause turbulence in the flow of the flue gases. It has been found that, with two or three cylindrical sections of the flue opening, each section being of successively smaller diameter, the flue gases assume a helical flow pattern which yields a longer path and more time for heat to be absorbed by the tank and the water therein. The result is a 35% to 45% greater efficiency in use of heat, a greater number of flue openings yielding the greater efficiency.

REFERENCES:
patent: 1170834 (1916-02-01), Lovekin
patent: 1438260 (1922-12-01), Pilcher
patent: 2664861 (1954-01-01), Alexander
patent: 4191132 (1980-03-01), Rahikka
patent: 4936260 (1990-06-01), Adams

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