ПОВЫШЕНИЕ ЭФФЕКТИВНОСТИ РАБОТЫ СУШИЛЬНЫХ УСТРОЙСТВ ПУТЁМ ИСПОЛЬЗОВАНИЯ ТЕПЛОТЫ ОТРАБОТАННОГО АГЕНТА СУШКИ

Abstract

The humidity of harvested grain in many regions of the Russian Federation is higher due to the peculiarities of climatic conditions. The efficiency of drying devices is determined by the use of energy-saving technologies. Reuse of waste coolant in dryers is proposed in the technological process of grain drying. The assessment of the main factors influencing the process of drying a wet grain heap has been carried out. Simulation of grain drying when heated air, obtained by cooling the grain after drying, is supplied to the combustion device of the dryer. A special computer program was used to calculate technological indicators. The program allows you to determine the economically feasible mode of operation of the drying equipment in the process of post-harvest processing of grain. The numerical values of the variables that are set depending on the grain processing mode and the productivity of the dispenser and dryer are defined for working with the program. The consumption of diesel fuel and natural gas for drying grain, depending on the moisture content of the grain heap and the productivity of the dryer, was determined during the simulation of this process. The hourly consumption of diesel fuel and natural gas for drying grain, depending on the moisture content of the grain heap, was determined. The dryer capacity varied from 5 to 40 t/h. The results of fuel consumption modeling showed that drying grain using the heat obtained by cooling the seeds and sent to the furnace units of the dryers can reduce fuel consumption by 20%.