Method of making a heat exchanger for condensing furnace

Details Method of making a heat exchanger for condensing furnace Method of making a heat exchanger for condensing furnace

1989-07-03

1990-08-14

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29458, 29463, B21D 5302

Patent

active

049475487

ABSTRACT:
A corrosion resistant 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: 3554150 (1971-01-01), Goetschius
patent: 3757856 (1973-09-01), Kun
patent: 4403572 (1983-09-01), Gerstmann et al.
patent: 4421789 (1983-12-01), Kaneko et al.
patent: 4427034 (1984-01-01), Nagata et al.
patent: 4461347 (1984-07-01), Layton et al.
patent: 4651923 (1987-03-01), Ben-Shmuel et al.

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