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Thermal dispersion and wall heat transfer in packed beds

✍ Scribed by D.J. Gunn; M. Khalid

Publisher: Elsevier Science
Year: 1975
Tongue: English
Weight: 548 KB
Volume: 30
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(75)80014-5

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✦ Synopsis

Abstxact-A new analysis showing the effect of axial and radial thermal dispersion and wall thermal resistance upon heat transfer to fixed beds of solids is presented. By application of this theory and non-linear regression, coefficients of axial and radial dispersion and wall heat transfer coefficients are calculated from experimental measurements of radial temperature protiles in fixed beds heated at the wail.

The experiments have been performed for beds packed with glass and with metallic particles within the particle Reynolds number range from 1 to 400.

The calculated coefficients are compared with experimental values reported by other workers. Some dzerences are attributed to the neglect of axial dispersion in the work of others, but other differences are significant in that, for example, thermal characteristics of fixed beds of metallic particles diier from those of non-metallic particles.

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