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Heat transfer and axial dispersion in packed beds

✍ Scribed by D.J. Gunn; J.F.C. De Souza

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 657 KB
Volume: 29
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(74)80160-0

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✦ Synopsis

The thermal frequency response of beds packed with glass and metallic particles has been measured in the range of Reynolds numbers from 0.05 to 330. Values of the coefficients of axial dispersion of heat, intraparticle thermal conductivity and fluid-particle heat transfer coefficients have been found by non-linear regression. The experimental frequency response at Reynolds numbers less than one was found to be dominated by thermal dispersion and as the range of small Reynolds numbers was approached the values of particle Nusselt group became constant. The experimental values are compared with the results of other workers. The substantial differences at low Reynolds nuinbers are due to the inclusion of thermal dispersion in this investigation while others have omitted this effect.

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