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Superheated Steam Drying of a Spherical Porous Particle

巻 11, 発行 7, 2008, pp. 633-646
DOI: 10.1615/JPorMedia.v11.i7.20
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要約

In this article, we present a mathematical model to describe the drying kinetics occurring in a porous particle during superheated steam drying. This model is based on the averaging volume approach. It takes into account the effect of gradients of moisture content, temperature, and pressure. The heat flux by convection is given by the external transfer coefficient between the particle and the surrounding steam. The radiation exchange between the particle and the surrounding during the drying process in superheated steam vapor has been included. For the mass transfer, the natural physical condition at the drying surface is based on the equality of the partial pressure of the vapor and the external pressure of the stream. An iterative method is proposed to process this condition. The system of equations describing heat and mass transfer in a porous particle is solved numerically by the finite volume method with an irregular mesh. The predicted results from the model are compared with experimental data reported in the literature. The validated model is then used to investigate, parametrically the effects of system variables on the drying behavior of a porous particle in steam.

によって引用された
  1. Messai Souad, El Ganaoui Mohamed, Sghaier Jalila, Chrusciel Laurent, Slimane Gabsi, Comparison of 1D and 2D models predicting a packed bed drying, International Journal for Simulation and Multidisciplinary Design Optimization, 5, 2014. Crossref

  2. Messai Souad, Sghaier Jalila, El Ganaoui Mohamed, Chrusciel Laurent, Gabsi Slimane, Low-Pressure Superheated Steam Drying of a Porous Media, Drying Technology, 33, 1, 2015. Crossref

  3. Nield Donald A., Bejan Adrian, Mass Transfer in a Porous Medium: Multicomponent and Multiphase Flows, in Convection in Porous Media, 2017. Crossref

  4. Nield Donald A., Bejan Adrian, Mass Transfer in a Porous Medium: Multicomponent and Multiphase Flows, in Convection in Porous Media, 2013. Crossref

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