Condensing furnace

Details Condensing furnace Condensing furnace

1987-11-27

1989-07-18

Jones, Larry

Stoves and furnaces

Hot-air furnaces

Liquid or gaseous fuel

126110R, 138DIG6, 165170, F24H 300

Patent

active

048483141

ABSTRACT:
A gas-fired condensing furnace with a corrosion resistant condensing heat exchanger. The condensing heat exchanger is formed from a flat sheet of engineering metal with a layer of polypropylene sheet material laminated thereto. Each condensing heat exchanger has a condensing flow passage of serpentine shape formed in the laminated flat sheet of engineering metal such that the polypropylene layer will be exposed to the flue gas/condensate environment to provide corrosion resistance to the metal.

REFERENCES:
patent: 2724672 (1955-11-01), Rubin
patent: 3638636 (1972-02-01), Marshall et al.
patent: 4289730 (1981-09-01), Tominson
patent: 4557202 (1985-12-01), Warner
patent: 4621686 (1986-11-01), Ahn

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