THE KINETICS OF DRYING OF GRAIN MATERIALS IN A MICROWAVE FIELD

The paper presents the results of a study of the kinetics of drying of a dense layer of grain materials in a microwave field. It is shown that the changes of moisture content and temperature time curves correspond to the characteristic of drying colloidal capillary-porous bodies in other methods of supplying heat. Data on the rate of drying for all investigated materials are summarized by a single dependence. Presented in a set of empirical formulas enables the calculation of moisture content and temperature depending on the target output power of the magnetron, the mass of the load and time. It is determined that the speed of drying in the microwave field significantly exceeds the values obtained with other methods of heat supply.