Tunnel Fans Business Area Tunnel Fans

Trust Systemair Trust the leaders for air diffusion and air movement Systemair’s story is a story of innovation, intuition and breakthrough technologies. It is also a story of the women and men that have made them possible, of their lives spent for a goal that is not just of the company. As, if there is a value that is shared by all the professionals of Systemair, it is the one to believe that a better technology can provide a better life for all. The sensibility towards the environment and the constant search for production and logistics solutions of high energy efficiency are just few aspects...

Systemair: Quality has always counted If Systemair has achieved the ISO 9001 and ISO 14001 certifications it is not only due to institutional duty: the search for constant improvement of quality is an absolute must that leads every decision making and production process. The choice of the suppliers, the definition of methods, the selection of production sites, the search for the most suitable technology and material so to satisfy every goal, are inside the DNA of the international reality that has never forgotten the key values of its founder and of the men and women that have made it important....

Systemair M.R.T. Division Systemair, world-wide leader for the manufacturing and commercialization of air diffusion components and fans, based in more than 50 countries and comprising 5200 specialists, definitely enters the field of infrastructure ventilation thanks to the acquisition of the Matthews & Yates assets. The MRT (Metro Road and Train) division was created with the purpose of following actively this particular market so to supply ventilation systems for underground applications as, metros, road, train and hydraulic tunnels. The staff, with a specific knowledge of the peculiarities...

proposal is global as Systemair can supply ventilation systems from the very start of the project during tunnel construction and follow the supply of the final ventilation systems needed to control internal air quality and fire safety measures. Moreover, understanding the importance of such works and the need of safety required, we provide unique solutions to our customers. In close cooperation with them, we design, according to the enforced standards and laws, the most suitable ventilation system, not solely relying on standardized previous solutions. We will provide our experience and tools...

Tunnel Drilling Ventilation Ventilation during tunnel construction is needed so to provide the external air required to dilute the pollutants produced by the machines used during the different stages of the manufacturing granting the working squads a safe environment.

Systemair is able to provide the necessary technical support for designing the proper ventilation system using the enforced international laws and recommendations as the Italian D.P.R. 20-3-56, the Swiss SIA 196 and the French AFTES and supplying the resulting products. Systemair Products Axial fans manufactured in single stage or in multi-stage units realized by coupling one or more contra-rotating fans so to deliver large air volumes with high pressure heads (over 5000 Pa). The adjustable pitch angle configuration and variable impeller solidity offers a wide performance range and maximum flexibility...

Silenced drilling application in urban context Drilling application with flexible duct assembly Deduster installation on TBM (Tunnel Boring Machine) Sound Attenuators Flexible Ducts Frequency Converters Sound emissions can be greatly reduced by adopting the correct solutions as adding cylindrical silencers to the fan or by realizing uniquely designed splitter silencers, particularly useful in urban environment where sound impact is becoming ever so important. Both are manufactured in heavy duty construction with significant steel sheets thicknesses to grant sturdiness and lifetime. All acoustic...

Systemair is able to provide for all ventilation systems design the proper material and support during: conceptual design, installation and commissioning. All products are CE certified and production and commercialization are performed under ISO 9001 and ISO 14001 certifications. Our quality system allows us to improve our products and our customer satisfaction. Reliability is guaranteed by severe quality control procedures without shipping any fan without having first performed running tests so to verify its functionality The long term experience and professionalism of our engineers allow to...

Road Tunnel VentilationNew road tunnels will be required for the foreseeable future due to the following main reasons: • Density of the population increasing worldwide • Economic growth of developing countries • Increase in prosperity leading to: - Increased vehicle ownership - Increased movement of goods by road (HGV) - Need to decrease journey times (goods/private) Systemair, as market leader for tunnel ventilation systems, is able to provide technical expertise for the design of the ventilation systems, supply state of the art products and support staff for the installation, commissioning...

Design of Road Tunnel Ventilation System Design ventilation rates are based upon providing a sufficient supply of air to dilute the pollutant emissions from vehicles (Carbon Monoxide, Nitrogen Oxides, and particulate matter) and tunnel wear (dust), for the period of time in which the users of the tunnel may be exposed. The control of the effects of fire is also extremely important in tunnels. The ventilation system needs to be sized so to provide sufficient velocity and direction for controlling the spread of smoke in the event of a fire. safety as: “PIARC” – Permanent International Association...

Road Tunnel Ventilation Systems The choice of the type of ventilation system for a road tunnel depends on different key elements such as: length, unidirectional or bidirectional traffic, gradient, cross-section, peak traffic flow rates, fire size, etc. Longitudinal ventilation Longitudinal ventilation is accomplished by using jet fans that, by accelerating a small part of the air present in the tunnel, through an exchange of momentum, are able to induce, on the overall air inside the tunnel, a movement in the willed direction. The same is accomplished for fire smoke propagation control. Normally...