Air Flow Fans

Centrifugal Fans

1) Excellent & Efficient for usage where:-
    a) High Volume requiring relatively low pressure
    b) For relative low fan discharge and high pressure

2) Robust construction for long life.

3) For ideal usage in ventilating small size and long tunnels ( even more than 5 km in length)

4) For low noise is prime consideration near built-up residential buildings.

Axial Flow Fans

1) Highly Efficient for Large and Long tunnels requiring ventilation high pressures for wide range of lengths.

2) Ideal for most tunneling operations especially where use of booster becomes necessary ( for high pressure).

3) Useful for both Forcing and Exhaust ventilation in tunnels.