EVG-Lufttechnik has been delivering its fans and accessories for national and international tunnel projects since the 90s. Besides the large axial fans used for intake and exhaust systems in central ventilation plants, EVG Lufttechnik also supplies jet fans for generating thrust as well as fans for ventilation and smoke extraction in stairwells, galleries and emergency tunnels.
For the intake and exhaust air fans, free runners are used with carbon, aluminium or ductile graphite iron rotor blades that, according to the technical requirements, can be adjusted when stationary or also during operation. The adjustment of the rotor blades during operation can take place electromechanically or also hydraulically.
Our newly developed models for tunnel technology are distinguished by high energy efficiency, low noise emission and high operating safety. It is possible to certify the fans used as mechanical smoke and heat exhaust devices for all temperature-time classifications according to DIN EN 12101 Part 3.