Russian Federation
Russian Federation
Russian Federation
It is stated that the most common causes of fire are spontaneous combustion processes caused by the combined action of a complex of chemical, microbiological and physical factors that determine the thermal balance between the processes of heat release and its dissipation into the environment. The relationship between the moisture content of bulk materials and the intensity of the processes of self-heating and subsequent spontaneous combustion is analyzed. The possibility of reducing the intensity of self-heating during drying of bulk materials is revealed. The relationship of the heat transfer coefficient between the outer surface of the bulk material and the drying agent has been established, depending on its temperature and moisture content. The possibility of reducing the complexity of calculating the drying regime by replacing the criterion equations of similarity theory with empirical formulas is shown. The structure of an algorithm for calculating the parameters of the free convection process during the drying of bulk material is proposed. The possibility of using the proposed empirical expressions in practical calculations has been experimentally proved.
self-ignition, self-heating, bulk material, moisture content of bulk material, convective drying, heat transfer coefficient
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