Jet Fans For Tunnel Ventilation

In longitudinal ventilation all of the air enters and leaves through the ends of the tunnel and it is moved along the space by jet fans.

Jet fans for tunnel ventilation.

Typically the equipment is used for smoke extraction or control for the time it takes people to evacuate the tunnel under emergency conditions. The jet fans use the impulse principle to move air through the tunnels in longitudinal direction. 2 tunnel fans jet fans cfd simulation systemair tunnel fans are developed in germany for a good reason. They provide an effective way of handling polluted air and smoke from fires.

400ºc 2h 300ºc 2h and 200ºc 2h certificates according to model powerful jet fans especially designed for tunnels ventilation for the smoke extraction in case of fire 400ºc 2h 300ºc 2h and 200ºc 2h according to model. Infinair tunnel ventilation metro tunnel jet fans yftnv airflow range 4 2 52 3 m s maximum thrust 3500 n direct driven ceiling hung sidewall mounted applications. Mainly used in tunnels including metro tunnels road tunnels railway tunnels and underground car parks. 400ºc 2h and 300ºc 2h certificates.

Jet fans can be uni directional type our jz series or fully reversible type our jzr. They are needed to. Jet fans among all different tunnel ventilation systems the longitudinal ventilation with jet fans is the most extended one due to its flexibility and lower cost compared with transverse and semi transverse ventilation systems using axial fans. Extremely thick tubular sheet steel casing.

Since then our factory in windischbuch has become a. The jet fans have been developed for ventilation of tunnels with aggressive atmospheres such as road traffic and train tunnels. Ventilation with tunnel jet fans has low construction costs and good space utilisation. With the incorporation of matthews yates in 2007 systemair germany began concentrating on ventilation systems for metro road and train tunnels.

The fans are in fact part of many concepts for firefighting. The need for tunnel ventilation is critical for the life and safety of any person utilizing the metro rail or road tunnels throughout the world. Longitudinal tunnel ventilation systems provide airflow along the length of a tunnel. Extremely robust one way jet fan with cast aluminium rotor for medium thrusts.

In tunnel ventilation throughout the world howden is the partner of choice. Improving the efficiency of turbomachinery including jet fans used in tunnel ventilation systems is essential in combating the volatile cost of fuel and reducing emissions of greenhouse gases energy efficient equipment is also more attractive to worldwide transportation authorities. Long range impulsion jet fans. There are two fundamental systems of tunnel ventilation longitudinal and transverse.

Tunnel jet fan jet fans especially designed for tunnel ventilation. Tunnel fans are designed for ventilation and smoke control in road and train tunnels.