Fesenko A. The increase of technological process efficiency of grain crops drying

The paper is devoted to the problems of increasing grain crops drying process efficiency. On the basis of critical analysis conducted as to the drying methods, available grain dryers and scientific studies, devoted to this problem, the necessity to improve drying technology and to develop a dryer with a pseudoliquid layer was stated; that will result power costs and increase the drying quality due to applying step by step heat supplier to drying material. Constructive and technological scheme of a dryer with a boiling layer was de-veloped on the basis of available (existing) dryers. Theoretical analysis of drying process with intermittent heat supply was conducted resulted in mathematical model of drying process mathematical dependences characterizing technological process of dryer work that allows to determine theoretically the basic constructive and techno-logical parameters of a dryer. Optimization of basic constructive technological parameters of a dryer with a boiling layer is (conducted) done. The experimental and industrial sample of a dryer with a boiling layer was made on the basis of conducted investigations and studies and it was tested under laboratory and industrial conditions showing its operating abilities and efficiency. Key words: technological process, drying, pseudo-liquid layer, a boiling layer, the drying agent, a dryer, grain.