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0221U101399,
0116U002363
,
Scientific bases of perfection of technical and technological processes, energy-saving drying of grain materials
Shvydia Viktor O,
20-01-2021
National Scientific Center "Institute of Mechanization and Electrification of Agriculture"
Research report in 1 volume. The object of study is the technological process of drying grain and seeds. The purpose of the study is to reduce energy costs for grain drying by increasing the efficiency of thermal energy use in dryers. Research methods: research was performed using the basic principles of theoretical mechanics, thermodynamics and thermodynamics of drying grain mixtures, mathematical statistics and simulation using a PC. The scientific bases of energy-saving processes of drying of grain materials are developed, including the concept of energy-saving drying and regularities of its course. Improving the energy efficiency of drying can be achieved: due to the rational organization of the movement of the drying agent in the dryers of the mine type; the use of two drying mines provides an opportunity, depending on the initial moisture content of the grain material to implement a direct, sequential or recirculation drying mode; the use of preheating of the grain material using the thermal energy of the spent drying agent; the use of the suction air flow of the drying agent in the drying shaft contributes to the intensification of moisture evaporation by reducing the partial pressure of water vapor in the drying chamber. In the MatLab 7.8.0.347 environment of the Simulink V7.3 package, a simulation computer model of an energy-saving drying complex has been created. Design documentation for the production of energy-saving grain dryer with a capacity of 20 t / h. Methods for calculating the basic parameters of energy-saving heat generator and dryer have been developed, a computer program has been created in the environment of Borland Delphi 7, which allows the integration of these calculation methods with automatic design systems. A control system for the technological process of drying in an experimental drum vacuum dryer has been developed, which determines the current temperature and humidity of seeds.
2021-01-20
Updated: 2025-12-17
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