Catalytic gas-fired furnace system and method

Details Catalytic gas-fired furnace system and method Catalytic gas-fired furnace system and method

1981-10-05

1983-11-01

Makay, Albert J.

Stoves and furnaces

Stoves

Heating

126112, 126116A, 431328, F24C 304

Patent

active

044125232

ABSTRACT:
A gas-fired, forced air furnace system employing a fiber matrix burner element and a condensing-type heat exchanger to achieve both high system thermal efficiency and low emission of NO.sub.X and other gaseous pollutants. The value of excess air in the fuel-air reactants supplied to the ceramic fiber matrix burner is selected to be equal to or greater than ten percent to provide NO.sub.X emissions below fifteen ppm on an air-free basis, with CO and HC emissions substantially comparable to those from existing furnaces, and the surface area of the condensing portion of the heat exchanger system is designed to produce sufficient condensation of moisture in the combustion gasses to produce an overall system thermal efficiency of at least about ninety percent.

REFERENCES:
patent: 3030092 (1962-04-01), Hildenbrand
patent: 3174474 (1965-03-01), Jones et al.
patent: 3191659 (1965-06-01), Weiss
patent: 3248099 (1966-04-01), Bratko
patent: 3329139 (1967-07-01), Vezzoli
patent: 3670713 (1972-06-01), Abbott
patent: 3688760 (1972-09-01), Rudin
patent: 3866596 (1975-02-01), Gottwald et al.
patent: 4053279 (1977-10-01), Eichenlaub
patent: 4093816 (1978-06-01), Case
patent: 4261326 (1981-04-01), Ihlenfield

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