Gas-permeable thermal insulator

Details Gas-permeable thermal insulator Gas-permeable thermal insulator

1984-03-20

1986-02-04

Kittle, John E.

Heating

Processes of heating or heater operation

Heating of or by wall or radiant surface

432 72, 432175, 4283044, 4283126, 4283128, 110216, 110217, 126 92B, F23G 512

Patent

active

045682739

ABSTRACT:
A gas-permeable thermal insulator comprising a porous ceramic body of a three-dimensional reticulate structure having interconnected open cells is adapted to be installed in a heating oven or radiant tube so that exhaust gas passes through the insulator to exit the oven or tube while the waste heat of the gas is effectively recovered for reuse. The porous ceramic body is characterized by a bulk specific gravity of 0.25-0.6, an average pore diameter of 0.2-10 mm, a porosity of 75-95%, and an air pressure drop of 0.1-40 mm in water column when air passes through the body over a thickness of 1 cm at a velocity of 1 m/sec.

REFERENCES:
patent: 2691605 (1954-10-01), Hediger
patent: 3552332 (1971-01-01), Mattenley
patent: 4073999 (1978-02-01), Bryan et al.
patent: 4264346 (1981-04-01), Mann
patent: 4302502 (1981-11-01), Narumiya
patent: 4440098 (1984-04-01), Adams

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