Abstract

The novel mathematical model of the combined vacuum conductive-radiative drying, adequate for plane geometry, is presented [1]. The process of vacuum drying is analysed as a problem of the two regions of unsteady-state heat transfer with two moving boundaries of moisture vaporization. The model is valid for the most intensive regime of drying performance i.e. boiling one in the falling rate period and for porous layers composed of non-hygroscopic materials. Application of the integral transform method enable numerical solution of the problem [2,3] and appreciation of influence of the model parameters on main process characteristics.

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