MATHEMATICAL MODELING AND IDENTIFICATION OF HEAT AND MASS TRANSFER IN A VEGETABLE DISPERSE MATERIAL DURING DRYING AND HEATING WITH ELECTROMAGNETIC FIELD
Journal Title: Енергетика і автоматика - Year 2018, Vol 0, Issue 6
Abstract
In recent years, the development of technology for drying and heat treatment of dispersed materials is far ahead of theoretical positions. Not only the classical literature on the problems of drying, but also special does not give specific recommendations on the design of installations with the supply of energy by an electromagnetic field of ultrahigh frequency, implementing the combined principles of drying. But such plants are actively being introduced into the agro-industrial production due to their versatility, efficiency, and quality of the final product. In turn, the justification of energy-efficient parameters, operating modes, the synthesis of the installation control system is possible only on the basis of a mathematical model of processes. The article presents a theoretical substantiation of the processes of heat and mass transfer in the plant dispersed material during drying and heating by the electromagnetic field of ultrahigh frequency. In particular, on the basis of the thermal and material balances, the equations describing the processes of drying and heating during microwave energy supply to the dispersed material are determined. Since there is no exact analytical solution of the presented mathematical model in the form of a system of differential equations in partial derivatives, the dependences of the temperature distribution and moisture content of the dispersed material along the length for any time point are determined by an approximate solution. This is interesting from a practical point of view and makes it possible to use the obtained mathematical model in the energy improvement of the implementation of the processes of drying and heat treatment with microwave energy input.
Authors and Affiliations
Б. І. КОТОВ, Валентина Миколаївна Бандура, Р. А. Калініченко
Keywords
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