CITY VENT PIPE Russian patent published in 1997 - IPC

FIELD: ventilation. SUBSTANCE: city vent pipe has a conical pneumatic shell whose height is 500 m and base radius is 100 m. The shell is maintained in a vertical position by positive pressure, 0.001 atm, of air removed and parachute that uses the air issuing from the top opening of the pneumatic shell. The energy of this air flow is produced by air-jet engines mounted in pipes laid between the streets surrounded with contaminated air to the city vent pipe. EFFECT: enhanced efficiency. 2 dwg