A mathematical model for heat transfer in a packed bed and a simplified solution thereof

Authors

  • D. S. Kim,

    1. Department of Chemical Engineering, The Ohio State University, Columbus, Ohio 43210
    Current affiliation:
    1. Esso Research and Engineering Company, Linden
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  • L. E. Gates,

    1. Department of Chemical Engineering, The Ohio State University, Columbus, Ohio 43210
    Current affiliation:
    1. Chemineer, Dayton, Ohio
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  • Robert S. Brodkey

    Corresponding author
    1. Department of Chemical Engineering, The Ohio State University, Columbus, Ohio 43210
    • Department of Chemical Engineering, The Ohio State University, Columbus, Ohio 43210
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Abstract

Heat transfer in packed beds can be mathematically modeled to account for the heat transfer between the particles and the gas phase, the conduction through the solid phase of particles, and the mixing or dispersion within the gas phase in the void structure of the porous media. To solve the resulting differential equations numerically is not easy. The solution for sinusoidal gas temperature input assumes linearity of the logarithm of the temperature with time. If, in addition, linearity with distance can be assumed, then the solution can be vastly simplified to finding the real root of a fourth-order algebraic equation.

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