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RESEARCH PAPERS: Thermal Radiation

Radiative Heat Transfer in Circulating Fluidized Beds

[+] Author and Article Information
Z. H. Fang, J. R. Grace, C. J. Lim

Department of Chemical Engineering, University of British Columbia, Vancouver, Canada V6T 1Z4

J. Heat Transfer 117(4), 963-968 (Nov 01, 1995) (6 pages) doi:10.1115/1.2836317 History: Received August 01, 1994; Revised December 01, 1994; Online January 23, 2008

Abstract

The radiation contributions to heat transfer in circulating fluidized beds are investigated based on a simple model involving clusters and dilute suspension. Local and length-averaged cluster transfer coefficients are derived based on a cluster renewal model with combined transient conduction and radiation. A three-component network is analyzed leading to a concise relation for the suspension-to-wall radiative transfer. Previous experimental data for heat transfer to a membrane wall with bed temperatures of 407 and 860°C (Wu et al., 1989) are in good agreement with model predictions.

Copyright © 1995 by The American Society of Mechanical Engineers
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