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Abstract

This work is an extension of the theoretical findings on the relatively new concept for radiative energy recovery system using porous media. The basic high-temperature flow system is considered, in which the hot radiating gas flows through a homogeneous porous layer. The porous layer as a grey body, in addition to convective heat exchange with the gas, can absorb, emit, and scatter thermal radiation. It is desired to have a large amount of energy changes from gas enthalpy to thermal radiation by porous medium. The two-flux radiation model is used to obtain the distribution of radiative heat flux in the porous media. The numerical solution of the coupled energy equations for the gas and porous layer in steady condition is obtained using the Runge-Kutta method. The crucial influence of gas radiation effect on the system's performance is thoroughly explored.

Keywords

porous media energy recovery gas radiation

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Study of Energy Recovery by Means of Porous Media Considering Gas Radiation Effect

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