Radiation shield and method of use

Details Radiation shield and method of use Radiation shield and method of use

1981-07-31

1983-06-14

Camby, John J.

Heating

Processes of heating or heater operation

122155A, 122169, 432 65, 432226, F27D 700, F24J 300, F22B 704

Patent

active

043880665

ABSTRACT:
A coiled arrangement of pipes convey a heated medium, such as a slurry, into, through, and out of a heater or fire box provided with an arrangement of high velocity burners. The heater is fired to a preselected elevated temperature. A plurality of radiation shields are positioned in close proximity to the surfaces of the pipes conveying the medium for heating. The position of the radiation shields relative to the pipes forms inner and outer heating zones within the heater to provide different flame temperatures. The radiation shields function as a physical barrier to prevent direct contact of the fuel flame and combustion products with the pipes. Thus the radiation shields are maintained at a higher temperature than the surfaces of the pipes and at a lower temperature than the combustion products. The radiation shields limit the flame radiation to the pipes and thereby reduce the rate of heat transfer to the medium permitting the use of high flame radiating temperatures in the heater so that a relatively low rate of heat transfer is obtainable inside a fire box, without unduly reducing the fire box temperature.

REFERENCES:
patent: 1647570 (1927-11-01), Kling
patent: 2009852 (1935-07-01), Lum et al.
patent: 2904014 (1959-09-01), Meyers
patent: 3238667 (1966-03-01), Remmert

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