Some Fundamental Aspects of Heat Transmission by Radiation from Flames and Furnace Linings.

JSGT 1942 V26 T113-T131

 The importance of heat transfer by radiation from (a) flames and hot products of combustion and (b) heated furnace walls, has been discussed. With non-luminous aerated flames, the principal emitters are water and carbon dioxide molecules which emit selectively, a time factor in the case of carbon dioxide being of some importance. The emission from luminous flames depends upon the presence of carbon aggregates of varying magnitude and approximates to black body radiation; if hydrocarbon-containing fuels are obtainable, considerable advantage may be taken of working with luminous flames. Refractory materials are intrinsically selective radiators, but under service conditions their characteristics are so modified that they approach those of a black body. The principles of selective radiation and the possible advantages of its application have been discussed with particular reference to glass-melting furnaces. Serious difficulties would probably be encountered in applying these principles, but the potential advantages are considered as amply justifying experimental investigation.

E. C. W. Smith, B.Sc., A. L. Roberts, Ph.D., and D. T. A. Townend, D.Sc., Ph.D., D.I.C.