Applications for Tunnel and Metro Infrastructure
Ventilation systems for tunnels and metro lines require solutions capable of ensuring operational continuity, safety and air quality even under the most demanding conditions. Comet Fans technologies deliver high performance both in daily operation and in critical situations, ensuring effective management of smoke, heat and pollutants.
The dedicated JET, SAF and ADF range combines advanced aerodynamics, certified components and modular configurations, enabling fast, reliable installation in tunnels of any type. Whether for smoke control, ventilation of underground areas or airflow management, the available solutions include reversible versions, high-temperature options and ATEX configurations for environments with specific requirements.
Thanks to extensive customisation options, each system can be precisely tailored to project requirements, ensuring an ideal balance between performance, energy efficiency and long-term durability.
The range is based on three different product series, with a very wide range of sizes and power ratings:
- JET Series: For longitudinal ventilation in road tunnels
- SAF Series: For transverse ventilation in road and rail tunnels, and for any ventilation purpose on metro lines
- ADF Series: For dust control during excavation
Main applications:
- Control of smoke and toxic gases in the event of fire
- Dilution and reduction of pollutant concentration (exhaust gases and fine particulates)
- Control of air temperature
- Control of dust concentration during excavation phases
- Dust extraction and filtration during excavation phases







