ТЕОРЕТИЧЕСКИЕ ПРЕДПОСЫЛКИ ОПРЕДЕЛЕНИЯ РАЗМЕРА И ОБЪЁМА РАСПРОСТРАНЕНИЯ ОЧАГА ОЗОНА В ЗЕРНОВОМ ВОРОХЕ И ОПТИМИЗАЦИЯ ВРЕМЕНИ ОЗОНИРОВАНИЯ

Abstract

One of the most promising methods for processing agricultural products today is the ozonation process. The effect of ozone on grain will allow it to be disinfected and stimulate the growth processes of the seed, without causing harmful emissions into the environment. The purpose of the research was to find the optimal time for ozonation of grain and seeds depending on the processing speed of a certain volume of grain material. To achieve it, numerical optimization methods were used, namely the patternsearch global search method, which will determine the most rational ozonation regime for given conditions, were used to achieve it. The source of ozone propagation in a grain heap during ozonation for 10...60 minutes is close in shape to an ellipsoid, but has a slightly different mathematical description. The mathematical models obtained by interpolation make it possible to determine the minimum ozonation time and the maximum speed of ozone treatment per unit volume of a grain heap. It was revealed that increasing the processed volume of grain due to the longer duration of the operation does not make sense, as it will contribute to an increase in energy and cost costs. Under given conditions, an ozonation time of 1270 seconds provides a maximum ozone treatment rate of 3059 mm3/s per unit volume of grain. Optimization will make it possible to ozone the maximum volume of a grain storage facility as quickly as possible at minimal cost. The shortest processing time per unit volume under these conditions was 0.000327 s/mm3. Other ozonation parameters will have different optimal values, therefore the proposed methodology is the basis of an appropriate computer program that will automatically determine the optimal ozonation regime for specific conditions.