Development of technological scheme of microwave - units for grain drying
DOI:
https://doi.org/10.31548/energiya2021.05.075Abstract
In the agriculture of Ukraine, a variety of drying installations are used, the design of which should ensure uniform heating and drying of grain, while at the same time allowing to control the temperature and humidity in the grain mass. The choice of an appropriate dryer can significantly improve the quality of dried grain, increase production profitability, increase production, reduce drying costs, and reduce energy costs. Currently, the most common drying method is convective, the disadvantages of existing convective grain dryers are low efficiency, low specific moisture removal, uneven drying, high costs of the drying agent, high energy consumption.
The purpose of the study is to develop a drying plant designed for high throughput.
The use of grain drying technology using microwave electromagnetic fields provides a number of significant advantages over conventional dryers that use only a thermal agent. Grain drying technology using microwave electromagnetic fields can be used in combined dryers.
The technological scheme of the drying installation is developed, which is based on the principle of microwave heating, which allows to intensify the external and internal transfer during drying. In the developed scheme the drying process takes place in three working zones. In the first zone, heating is carried out by irradiation with an electromagnetic field in the microwave range of seeds to a certain temperature, the second - the aging of the seeds, where moisture is released in the inter-grain space. In the third zone, the layer is blown by air flow with the organization of fluidization.
The main design and mode parameters using the software environment "Flowvision" are determined.
Key words: grain, microwave oven, dryers, installation, electromagnetic field
References
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