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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences
International Heat Transfer Conference 4
1970, 31 August - 5 September, Paris-Versailles, France

GAS-PARTICLE HEAT TRANSFER COEFFICIENTS IN PACKED BEDS AT LOW REYNOLDS NUMBERS

Get access DOI: 10.1615/IHTC4.1010
pages 1-12

Abstract

Gas-particle Nusselt numbers in packed beds at Reynolds numbers between 0.3 and 41.7 are reported using a two-phase three parameter model which accounts for both axial conduction in the solid phase and dispersion in the gas phase. A Nusselt number of 0.564 was obtained at a Reynolds number of 0.3. At Reynolds numbers of 0.846 and 1.78, the Nusselt number decreased as the voidage did. A new solution is presented which shows under what conditions a single phase model with an effective thermal conductivity is representative of low Reynolds number heat transfer in packed beds.
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