During summer ventilation of some workings with low temperatures (acquired, for example, during the winter cooling period), warm atmospheric air, getting into the working, enters into heat exchange with its walls and, cooling, becomes saturated. Therefore, condensed moisture falls on the walls of the working. Its fallout begins from the place where the air flow temperature becomes equal to the saturation temperature. From the same place of the working, where the flow temperature reaches 0°, icing of 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, the distribution of temperature along the working as a function of time, air flow velocity, transverse dimensions of the working, temperature and humidity of the atmospheric air.
