Heat exchange apparatus for industrial furnaces

Details Heat exchange apparatus for industrial furnaces Heat exchange apparatus for industrial furnaces

1984-07-25

1986-05-20

Camby, John J.

Heating

Heat generator heats gas or liquid material in a flow structure

Material heated by mixing with combustion products of generator

126 91A, 165155, F24H 100, F24C 300

Patent

active

045898448

ABSTRACT:
A heat exchanger for heating air supplied to a burner is described. The heat exchanger includes two passages. One of the passages provides a channel through which combustion gas is exhausted from the burner while the other passage provides a channel through which air is supplied to the burner. The two passages are arranged to transfer heat from the combustion gas to the combustion air. Each of the passages includes a helical guide baffle for directing fluid through each respective passage substantially along a helical flow path. The helical guide baffles of the passages each exhibits a variable pitch which changes at a predetermined rate to maintain the pressure and velocity of the fluid in the respective passages within predetermined limits.

REFERENCES:
patent: 3079910 (1963-03-01), Bloom et al.
patent: 4090558 (1978-05-01), Akama
patent: 4493309 (1985-01-01), Wedge et al.

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