Sorokova N. Mathematical modeling of the dynamics of heat and mass transfer in the processes of sorption and drying in the apparatus of periodic and continuous action

The thesis is devoted to development of the theory of interrelated processes of heat and mass transfer, phase and structural transformation in porous systems during adsorption and drying in apparatus of periodic and continuous action to solve practical problems in the field of energy and resource conservation.On the basis of methods of mathematical modeling, fields of temperature, pressure, volume concentration of components in consolidated and dispersed porous systems with one and multi-component liquid phase, geometrical parameters of porous systems were investigated.An algorithm for numerical determination isotherm of adsorption and a method for determining the coefficient of diffusion of bound substance in porous media is developed.On the basis of theoretical and experimental studies of heat and mass transfer, phase trans-formations and shrinkage of colloidal capillary-porous materials, the influence of various external factors on the dynamics of continuous dehydration has been studied and a new convective-condensation method of drying the thermolabiles materials has been devel-oped. The technological scheme of the two-zone direct-current tape drying plant is pro-posed, which allows it to be implemented.