The mathematical model of the process of combined drying of commercial grain in con-veyor-type installations

Abstract

The article discusses the results of the development of a model of combined microwave-convective drying of grain products in installations where the product moves inside the working chamber, alternately reaching the minima and maxima of exposure to the electromagnetic field of the microwave range. In the course of research, it was found that it is rational for these purposes to use a working chamber made in the form of a rectangular resonator. The developed mathematical model makes it possible to perform technical calculations for conveyor–type installations - for example, for drum and shaft grain dryers, where the product moves horizontally. Due to the large number of metal structures inside the drying chambers, it is proposed to implement the working chamber as a separate unit that stimulates the release of moisture to the surface of the product.