High efficiency heat exchanger system with glycol and refrigeran

Details High efficiency heat exchanger system with glycol and refrigeran High efficiency heat exchanger system with glycol and refrigeran

1991-07-03

1993-11-23

Ford, John K.

Heat exchange

Movable heating or cooling surface

Rotary drum

237 2B, 622386, 622387, F25B 2900, F25B 2700

Patent

active

052638928

ABSTRACT:
A condensing gas furnace/heat exchange system is provided which includes two subsystems. A first subsystem includes an outdoor coil, an indoor coil, a reversing valve and a compressor, and the heat exchange medium thereof is a liquid refrigerant, such as freon. This subsystem is operative in heating, heat-augmented heating and cooling modes of operation, and in the heat-augmenting mode of operation, gas burners provide additional BTU's to the system. The other system includes an outdoor coil, an indoor coil and a pump, but excludes a compressor or a reversing valve, and utilizes a heat-exchange medium such as water, ethylene glycol, glycol per se or a nonrefrigerant. The pump merely pumps the glycol through the system which absorbs heat/BTU's from the flames of the burner which are eventually transferred by the indoor coil to heat an associated dwelling or the like.

REFERENCES:
patent: 2241060 (1941-05-01), Gibson
patent: 3623549 (1971-11-01), Smith, Jr.
patent: 4167965 (1979-09-01), Rogers
patent: 4190199 (1980-02-01), Cawley et al.
patent: 4311191 (1982-01-01), Vandervaart
patent: 4311192 (1982-01-01), Vandervaart
patent: 4461345 (1984-07-01), Vandervaart
patent: 4517810 (1985-05-01), Foley et al.
patent: 4825664 (1989-05-01), Vandervaart
patent: 4995241 (1991-02-01), Vandervaart
patent: 5003788 (1991-04-01), Fischer
patent: 5020320 (1991-06-01), Talbert et al.

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