Modeling the dynamics of heating caryopsis infrared radiation in a moving bed

Abstract

The system of technological operations of post-harvest grain processing, heat treatment occupies an important place. Supply of heat energy to the grain in the heat treatment is carried convection, radiation and conduction method. The most cost-effective method of supplying energy to the grain material is radiating, namely, infrared method. This method allows for all kinds of heat treatment of grain. To optimize the process of seed treatment with infrared energy efficiency criteria radiation and thermolability grain, set a goal to develop a mathematical model describing the dynamics of grain heating process in a moving bed, depending on the determining process parameters (power variable over the length of the conveyor of the heat flux, the maximum surface temperature of heating grains). In accordance with the intended purpose in the article describes the analytical mathematical models of grain heating by infrared radiation at a constant and variable radiation stream, in the case of the moving grain layer. Consideration of mathematical models allow to determine the dynamics of the temperature field of grain during the heat treatment by infrared radiation, depending on the technological parameters thermoradiation installation settings. These dependencies allow to simulate the dynamics of changes in average temperature, surface temperature and heating rate of grains during heat treatment by infrared radiation. Grain stored in a moving bed. Using the results obtained allows for various types of heat treatment process to determine the optimal duration of action technological importance and the power of the heat stream.