Method of determining discontinuities in the heat exchanger of a

Details Method of determining discontinuities in the heat exchanger of a Method of determining discontinuities in the heat exchanger of a

1979-09-18

1981-03-31

Marcus, Michael

Chemistry: physical processes

Physical processes

Crystallization

23230L, 73 407, 422 86, 422 94, G01N 3100, G01N 3300

Patent

active

042590809

ABSTRACT:
Method of determining discontinuites in the heat exchanger of a warm air furnace directed to spraying the burner within the furnace with a non-corrosive solution of sodium carbonate. The solution is sprayed on the burner after it is heated and in operation but with the blower fan inoperative. Thereafter a blue flame from a gas torch is played adjacent to or into a register or opening in the plenum of the furnace or an opening in the piping or duct work leading from the plenum. If the blue flame turns yellow this indicates there is a deleterious leakage of combustion gases from the heat exchanger of the furnace.

REFERENCES:
patent: 2017951 (1935-10-01), Dasher
patent: 3522008 (1970-07-01), DeFabaugh et al.
patent: 3945244 (1976-03-01), Wormser et al.
patent: 3975943 (1976-08-01), Bracket
patent: 4090554 (1978-05-01), Dickinson

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