Axial fans are the preferred technology where large volumes of air are required, and are ideal for tunnel ventilation using transverse or semi-transverse techniques.
Flows of up to 400 m3/s and pressure rise of up to 30,000Pa or higher if required using 2-stage
Fans set to operate uni-directional or fully reversible
Flow control is enabled by blade adjustment either at standstill or during operation depending on model selected and also achieved using a Variable Speed Drive (VSD)
Anti-stall option with Ivanov device
Fire testing to operate at 200ºC/1h or up to 400ºC/2h (DIN EN 12101-3 or ISO 27927)
Jet fans are typically used in ventilation systems using the longitudinal technique with single or bi-directional traffic.
Flows of up to 50 m3/s with thrust of up to 3360N
Fans set to operate uni-directional or fully reversible (uni-directional may also operate in reverse with a lower thrust)
Flow control is achieved using a Variable Speed Drive (VSD)
Wide range of standard sizes, all incorporating rotors that are dynamically balanced to eliminate vibration and noise
Fitted with silencers for outstandingly quiet operation
Corrosion protection by either the use of stainless steel or duplex coating
Tunnel Fans are just one part of our solution for tunnels. View all our solutions and download our tunnel brochure.