TY - JOUR N2 - Postharvest processing of grain is an important step in the overall grain production process. It makes possible not only quantitative and qualitative preservation of the harvest, but also ensures maximum profit from its sale at the most favorable market conditions. Convective heat treatment (drying, cooling) guarantees commercial harvest conservation, prevents its loss, and in some cases improves the quality of the finished product. The necessity of intensification and automation of technological processes of postharvest grain processing requires the development of methods of mathematical modeling of energy-intensive processes of convective heat treatment. The determination and substantiation of optimum modes and parameters of equipment operation to ensure the preservation of grain quality is possible only when applying mathematical modeling techniques. In this work, a mathematical model of particulate material drying is presented through a system of differential equations in partial derivatives of which the variable in time and space relationship between heat and mass transfer processes in the material and a drying agent is reflected. The aim of the research was to determine the dynamics of the interrelated fields of unsteady temperature and moisture content of the material and the drying agent on the basis of mathematical models of heat and mass transfer in the layer of particulate material in convective heat approach or heat retraction. The implementation of the mathematical model proposed in the standard mathematical set allows analyzing efficiency of machines and equipment for the convective heat treatment of particulate agricultural materials in a dense layer, according the determinant technological parameters and operating modes. L1 - http://czasopisma.pan.pl/Content/108398/PDF-MASTER/5_Kotov.pdf L2 - http://czasopisma.pan.pl/Content/108398 PY - 2016 IS - No 4 KW - heat and mass transfer KW - active ventilation KW - thermal drying KW - mathematical model KW - temperature field KW - field of moisture content A1 - Kotov, Boris A1 - Kalinichenko, Roman A1 - Spirin, Anatoliy PB - The Lublin Branch of the Polish Academy of Sciences VL - vol. 16 DA - 2016 T1 - Mathematical Modeling of Heat and Mass Transfer Process Under Heat Treatment of Grain Materials in Dense Layer UR - http://czasopisma.pan.pl/dlibra/publication/edition/108398 T2 - Teka Commission of Motorization and Power Industry in Agriculture ER -