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Radiant heat transfer in packed beds
Author(s) -
Chen John C.,
Churchill Stuart W.
Publication year - 1963
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690090108
Subject(s) - silicon carbide , materials science , radiant flux , heat transfer , isothermal process , absorption (acoustics) , spheres , scattering , carbide , composite material , attenuation , heat flux , thermodynamics , optics , physics , astronomy
The effective scattering and absorption cross sections were determined from measurements of radiant transmission through isothermal beds of glass, aluminum oxide, steel and silicon carbide spheres, cylinders, and irregular grains. The radiant conductivities were calculated from these cross sections. Back scattering was found to be the principal mechanism of attenuation for all of the packings. Absorption was a significant mechanism only for the silicon carbide grains. At 2,000°F. The radiant contribution to the total heat flux was estimated to vary from 35% for the silicon carbide packings to 85% for the glass packings.