Good ventilation is an essential part of the planning process for modern tunnel design
In road and rail tunnels where passenger safety and comfort is essential, it is important to plan the ventilation system carefully. Vehicle tunnels and metros have to be able to meet the air flow demands which match changing traffic conditions, as well as being able to remain in operation during emergency situations.
Howden tunnel ventilation fans perform this task efficiently, reliably and quietly, and are designed to remain operational during extreme temperature conditions.
We have a range of axial flow fans and jet fans specifically designed for tunnel and metro applications. Their features include high efficiency, low noise, durability, high reliability, low maintenance, corrosion protection and flameproof motors, with auto-variable pitch or variable speed drive, and the potential for up to 100% reverse flow.
We can advise and support your chosen method of ventilation. With our Saccardo jet, injector or extraction are perfect for your longitudinal ventilation, while we have the products and expertise to support semi-transverse and transverse road tunnels.
We have extensive experience in all types of tunnel ventilation systems, for both vehicular and non-vehicular tunnels. We have supplied the ventilation systems and fans for many tunnels in Europe, and North America, including those for the re-equipping of the Mont Blanc tunnel and the Gotthard tunnel, as well as providing fans for tunnels in other parts of the world.
Ensuring an adequate air circulation, to control the spread of smoke in case of fire, or to reduce temperatures to acceptable limits.
Our lifelong aftercare service will supply original replacement parts, support you with maintenance and installation, and even train your own engineers in maintenance techniques. We keep detailed plant records almost indefinitely, and regularly supply spare parts for machinery over 50 years old.
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