Thermal Radiation in Packed and Fluidized Beds

[+] Author and Article Information
C. L. Tien

Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA 94709

J. Heat Transfer 110(4b), 1230-1242 (Nov 01, 1988) (13 pages) doi:10.1115/1.3250623 History: Received February 22, 1988; Online October 20, 2009


The present work gives an overview of the existing knowledge on radiative transfer in packed and fluidized beds. Special emphasis is given to the proper usage and determination of radiation characteristics of the particles in these systems. Models that treat the particulate bed as a continuum are discussed along with those that consider the system as discontinuous, i.e., accounting for the phase boundaries between the gas and the particles. Existing experimental techniques for determining the radiative properties are presented, and the published bed transmittance and reflectance data are discussed and compared with the theoretical predictions. Interaction of radiation with other modes of heat transfer is also examined.

Copyright © 1988 by ASME
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