A Model of Heat Transfer in Fluidized Beds

[+] Author and Article Information
Benjamin T. F. Chung

Mechanical Engineering Department, University of Akron, Akron, Ohio

L. T. Fan

Chemical Engineering Department, Kansas State University, Manhattan, Kan.

C. L. Hwang

Industrial Engineering Department, Kansas State University, Manhattan, Kan.

J. Heat Transfer 94(1), 105-110 (Feb 01, 1972) (6 pages) doi:10.1115/1.3449857 History: Received March 04, 1970; Online August 11, 2010


An expression for estimating the heat transfer coefficient in a fluidized bed has been developed based on the surface renewal and penetration concept. The predicted heat transfer coefficients between walls and beds agree well with experimental results. The result of this analysis shows that, in general, the effect of thermal conductivity of particle on heat transfer is insignificant. The maximum possible Nusselt number for the gas fluidized system is determined theoretically as 13.5. This value appears to be reasonable in light of the majority of available experimental data.

Copyright © 1972 by ASME
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