Abstract
This is a method of drying grain related to agriculture and can be used as a grain dryer on an elevator. Increasing the efficiency of the process of heating the grain material and reducing energy costs is due to the fact that there is a uniform distribution of moisture in the dried product. The induction drying method has the advantage that it does not have heat transfer from the heater. Ensuring the quality of the heat treatment process, in compliance with operational and technological requirements with minimal energy costs, an idealized contact type installation for heat treatment of grain should include the following main elements in its structural composition. For the study, the entire design of the grain dryer with direct induction heaters was assembled. The installation of a cylindrical shape with a helical surface auger includes all the above elements – this is the supply of grain to the hopper, the method of heat supply, the determination of the distance. Inside this cylinder is a fixed helical surface, on which the grain from the hopper is filled from the top. Due to the gravitational forces, the grain moves down the helical surface. There is one feature here – the helical surface must have a variable pitch, decreasing from the top to the bottom. This is due to the fact that as the grain dries, the coefficient of friction of the grain on the material of the helical surface decreases. High-frequency grain dryers have been designed, tested, and even put into practice. The grain dried in such installations meets all technological requirements, and in some cases surpassed the grain dried in the traditional, convective way in quality. Economic changes in our country have revealed the demand for miniaturization of plants, mini grain dryers have been created, mobile grain dryers with relatively low power consumption, highly economical, easy to use and maintain, and most importantly-quite cheap.
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