Exergy analysis of the technology of oscillating drying of oilseeds

In recent decades, the exergy method of thermodynamic analysis has become an integral part of scientific research, especially in the field of technology and technologies of grain drying. It is known that the information obtained during the exergy analysis is not available when using other types of analysis, for example, energy. The article demonstrates the advantages and prospects of in-depth exergy analysis, the purpose of which is to expand the information obtained by researchers in the analysis of energy-generating system in the development of strategies for thermodynamic improvement of energy-generating systems, a special case of which are dryers and refrigerators.The paper presents an assessment of thermodynamic efficiency of the technology of oscillating drying of oilseeds, taking into account the degree of use of different types of energy spent in technological processes, based on the properties of raw materials, work carried out on the system and the total amount of all types of energy involved from the outside. The main objective was to assess, on the basis of the second law of thermodynamics, the degree of thermodynamic perfection of the technical system as a whole, as well as to identify the stages of the technical process on which the main exergy losses are concentrated, in order to increase the efficiency of its work. To assess the energy efficiency of the technology under consideration, we performed an analysis based on Brodyansky's method, in accordance with the Shargut environmental model, which showed its high degree of thermodynamic perfection due to the use of waste heat carriers and the organization of the system in a closed cycle.High energyefficiency of the considered thermal technology system testifies to expediency of use of the refrigerating machines working in the mode of the heat pump at oscillating drying with the organization of the closed cycles of heat carriers. Mixing of hot and cold air in different proportions makes it possible to optimize the drying parameters in accordance with the type of oilseeds and its initial properties.