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RESEARCH PAPERS

Conductance of Packed Spheres in Vacuum

[+] Author and Article Information
C. K. Chan, C. L. Tien

Department of Mechanical Engineering, University of California, Berkeley, Calif.

J. Heat Transfer 95(3), 302-308 (Aug 01, 1973) (7 pages) doi:10.1115/1.3450056 History: Received September 21, 1972; Online August 11, 2010

Abstract

An analytical study is presented for the heat transfer through the solid phase of a packed bed of spheres bounded by two infinite plane surfaces of different temperatures. The prediction of the conductance is based on the constriction resistance for spheres in contact. Both exact and approximate equations are derived for solid, hollow, and coated spheres and for several regular packing patterns of different void fractions. Comparisons with the available experimental data indicate that the theory is satisfactory over a wide range of applied load and system parameters.

Copyright © 1973 by ASME
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