Device of Reversal Tunnel Ventilation of Underground with Partial Air Circulation

The investigations pertain to ventilation of tunnel facilities, creation of normal health conditions for passengers and service personnel of the underground.The research task is to stabilize air temperature and humidity atmosphere regimes during underground operation, creation of convenient conditions for passengers and service personnel, impact reduction of hazards introduced by ambient air, reduction of power consumption for service of underground premises.The task is attained by the fact that the known device of reversal tunnel ventilation of undergrounds with partial air recirculation additionally has a heat pump and its evaporating zone serves for cooling of disposal spent air and it is connected with a separator for liquid and gaseous fractions, a block of their separate cleaning and removal of neutralized liquid fraction in sewerage, a unit for returning gaseous portion into underground facilities, connecting pipelines and fittings. In addition to this it has recuperative heat-transfer units for heating of incoming ambient air with the help of spent one and control and analytical complex that ensures an optimum operation of the device in automatic regime.