The choice of operation regimes for an air quality maintenance system in the Northern Mujsky Railway Tunnel

摘要

The choice of ventilation schemes in the Northern Mujsky railway tunnel and definition of the necessary quantities of air ensuring regulated radiation conditions in the tunnel system has been accomplished. The influence of natural draught on the stability of tunnel ventilation has been estimated. The design of a portal ventilation gate allowing minimal influence from natural factors is described. The selection of parameters for an atmospheric air heating system in winter has been carried out. The operation regimes of air heaters, dependent on the temperature of atmospheric air, have been established.