Open AccessImproving the efficiency of convective grain drying by using low-intensity RF radiation
Author(s) -
A. V. Volgin,
V. A. Kargin,
E. A. Chetverikov,
A. P. Moiseev,
L. A. Lagina
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/954/1/012017
Subject(s) - dewatering , raw material , process engineering , environmental science , pulp and paper industry , moisture , convection , humidity , volume (thermodynamics) , intensity (physics) , materials science , relative humidity , waste management , composite material , engineering , chemistry , meteorology , physics , geotechnical engineering , organic chemistry , quantum mechanics
Drying (dewatering) of plant products is widely used in various technologies of their processing, transportation and storage. Existing dewatering processes and equipment are very diverse in design and application; their technical and economic performance also varies significantly. The effectiveness of the dewatering process of vegetable raw materials depends on the range of initial and final humidity and a number of physical, mechanical, chemical and other properties of the product, the drying method, technology and technical characteristics of the equipment. characteristics of the equipment. It is particularly difficult to ensure efficient, relatively low-energy drying of grain products, the seeds of which contain moisture in a bound form and are separated from the external environment by a dense seed shell. Currently, the volume of drying and processing of such seeds is increasing and amounts to millions of tons per season. Dried seeds are used to make flour, food additives, spices, medicinal oils and other natural products. The article studies the ways to reduce energy consumption in the main drying method-convective dewatering of commercial grain with low initial humidity. It is shown that the injection of small doses of microwave energy into the drying process - 1-5% of the total convective heating power - can reduce the overall energy intensity of the process by 25-27%.