Shaft options for placing of the mine air heater installation on the stand of a pithead
Existing mine air heater installations (MAHI), intended for heating air, supplied to the air supply shafts during the cold season, uses of air heater channel. Part of air from MAHI is supplied through air heater channel and is partly sucked through the pithead due to the common mine depression created by the main ventilation unit. This coincides with the problem of the mixing of these two air streams, whereby the temperature regime in shafts is changed that may violate the shaft sealing fillings. Construction of air heater channel results in additional financial costs. The description of the MAHI located in the pithead is given. A distinctive feature of the proposed design is the MAHI is that the heat exchangers are arranged around the perimeter of a building of the pithead in a row. In this case it is not necessary to build a channel of air heater, and hence, the air mixing problem is eliminated. An algorithm for calculating the parameters of the MAHI is provided.