Development of mathematical model of drying amaranth seeds in the machine with a balanced-twisted layer

One way to create a new drying technology is the development and adoption by the industry of high-intensity machines with active hydrodynamic regimes, providing in many cases, higher technical and economic indicators. This principle is very successfully implemented in devices with swirling flow and particulate material. Therefore, the use of devices with twisted coolant flow to intensify the process of drying particulate materials is both theoretical interest and practical value. Amaranth seeds contain an average of 17 % protein, 8 % of oil and 4-5% fiber. Because of the significant amino acid content of lysine in the protein which amaranth twice larger than that of wheat, and three times more than corn and sorghum, and compares the number with cow's milk and soy, amaranth protein quality is considered very high. Amaranth seeds are the raw material for the production of oil containing up to 8 % of squalene. On the basis of theoretical analysis of heat and mass transfer process of drying amaranth seeds in the machine with a balanced twisted - layer authors developed a mathematical model of it. The structure of the flow of the drying process in the cross sections of the machine. The model is based on the fundamental equations AV Lykov, describes a heat moisture transfer in capillary-porous environments in the linear thermodynamic approximation, given the way the convective heat supply and small size of dried amaranth seeds. The resulting equations describe the dynamic change of temperature fields and the moisture content in a conjugated heat and mass transfer at the boundary of the solid phase - coolant. Found macrokinetic regularities of the process. The results of the work will be useful to a wide range of professionals involved in drying amaranth seeds, as well as for the calculation and design of modern dryers.