On the theory of icing of mine workings during their ventilation
Abstract
During summer ventilation of some workings with low temperatures (acquired, for example, during the winter cooling period), warm atmospheric air, entering the working, undergoes heat exchange with its walls and, cooling, becomes saturated. Therefore, condensed moisture falls on the walls of the working. This condensation begins from the point where the temperature of the air flow becomes equal to the saturation temperature. From the same point in the working where the flow temperature reaches 0°, icing of the moisture occurs, which complicates the operation of the working. It is necessary to calculate: (1) icing and condensation thresholds, (2) the thickness of the icing layer, and the distribution of temperature along the working as a function of time, air flow velocity, transverse dimensions of the working, and temperature and humidity of the atmospheric air.
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