Evaluation of the Energy Characteristics of the Infrared Drying Process of Rapeseed and Soybeans With a Vibrating Wave Driver

Abstract

The developed thermal radiation dryer with a vibrating wave method of generating oscillations allows you to realize the positive features of the flow form of the processing organization, the level of influence of high thermal loads on the surface layer of products, the high rate of moisture removal deep into the product in conditions of ensuring its fluidized state. Under such conditions, energy-saving and uniform processing of the mass of technological loading is realized. The loosening of the mass of products under the influence of signs of variable loads to the reduction of internal friction and viscosity in the technological environment, which allows to maximize heat transfer coefficients. The implementation of the process of mixing loose particles of products during their transportation in the working area with a vibrating wave driver ensures constant renewal of the surface layer, layer-by-layer uniform heat treatment, which eliminates its overheating and sufficiently effective energy saturation under the action of high-energy infrared radiation. The vibration-wave method of creating a fluidized layer allows to soften the contact interaction with infrared rays in a certain way. In the developed vibro-wave thermoradiation dryer, vibration not only reduces the forces of internal friction during transportation, but also forms a dynamic wave to ensure the forced movement of material along a flexible load-carrying body under the conditions of continuous renewal of product layers during their mixing. Based on the results of the research, it was substantiated that the most effective were the speeds of product advancement in the range from 0.15 to 0.3 cm/s, the rational values ​​of the power of infrared radiation were 400–500 W, and the specific loading of the conveyor belt was expedient to use up to 3.5 kg/m2.