Abstract
Significant losses of grain crops at various stages of cultivation, harvesting, post-harvest processing and storage dictate the need to technologies and equipment for these processes. Currently, one of the most promising directions in the field of heat treatment of grain is the use of combined influence methods with the use of electrophysical effects. The purpose of this work is to develop and test a method for measuring the dielectric loss factor by an indirect method, which makes it possible to control the humidity of grain material exposed to microwave. The paper presents the equipment and the design of the experimental installation. The results of the experiment were subjected to regression analysis. The results of experimental studies and dependencies can be used for modelling microwave effects on agricultural bulk materials in electromagnetic modelling software, such as CST Studio.
Highlights
The study of combined impact methods on agricultural materials and the development of energy-efficient equipment is largely associated with the development of industrial equipment based on mathematical and computer models
Wide opportunities for the development of such equipment are provided by the use of specialized software tools
The coefficient of dielectric loss of the material under study in a dense layer is calculated from the equation (3)
Summary
The study of combined impact methods on agricultural materials and the development of energy-efficient equipment is largely associated with the development of industrial equipment based on mathematical and computer models. The use of microwave fields will reduce the cost of heat treatment by 15-20%, depending on the process and the type of material being processed [1,2,3,4]. To provide the required parameters applicable to the drying equipment, it is necessary to provide uniform heating of the processed material by the volume of the pipeline. Modern means of computer modelling allow for prototyping and visual representation of the treatment area of the material [5,6,7]. For modelling and further development prior to con-ducting mathematical modelling and sample making equipment, it is necessary to investigate the properties of crops
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