Research of the spent drying agent parameters in the mine grain dryer

Abstract

Purpose. Improving the energy efficiency of the technological process of grain drying by reducing emissions of thermal energy with the spent drying agent by regulating the thermodynamic potential of the drying agent stream in the grain stream. Methods. To obtain and process the results, methods of engineering, programming, cybernetics, graphical and regression analysis and synthesis using a calculator and applications Matlab and Speq were used. Results. A set of equipment for monitoring the thermodynamic parameters of the technological process of grain drying was developed, manufactured and implemented at an operating mine grain dryer. The data of primary accounting of the results of experimental studies on the existing shaft grain dryer of heat and humidity indicators of the spent drying agent at different stages of grain drying were obtained. The energy aspects of increasing the efficiency of using the drying agent in the technological process of grain drying are considered. Conclusions 1. Due to the characteristics of primary measuring converters together with the means of display and archiving of indicators, the developed set of equipment for the control of the thermodynamic parameters of the technological process of drying grain is useful tool for the dryer operator, which cares for the quality of the finished product and energy saving of production. 2. The rational adjustment of the thermodynamic parameters of the drying agent stream provides a reduction in the energy consumption for drying about 6 %. 3. The results of the work can be used in further scientific research on the modernization of operated grain dryers and for the design of innovative energy-saving grain drying processes. Keywords: grain, drying agent, enthalpy, drying, automation, energy saving.