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Modelling of heat transfer at the wall of a packed-bed apparatus

✍ Scribed by J. Tobiś; D. Ziółkowski

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
641 KB
Volume
43
Category
Article
ISSN
0009-2509

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✦ Synopsis

A mathematical model of heat and momentum transfer within the boundary layer of a liquid flowing in the vicinity of the wall of a packed-bed apparatus was formulated and verified experimentally. The model was employed for the prediction of the thickness of the boundary layer, the temperature and the liquid velocity distributions, and the value of the effective viscosity in the vicinity of the wall. The analysis of the results obtained allows one to explain the reason for the difference between heat transfer rates in the boundary layer at the wall of a packed-bed apparatus containing a gas-solid or a liquid-solid system.

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## Abstract Simple thermal resistance models of packed‐bed heat transfer can be used to derive predictive formulas for the effective axial and radial thermal conductivities and apparent wall heat transfer coefficient. In particular, the behavior of the heat transfer parameters over the entire range