The tunnels that you normally go through use a variety of equipment to ventilate through them. For example, a jet fan like a giant fan on the ceiling is a powerful source of fresh air. In addition, exhaust fans that discharge contaminated air from tunnels into the pits are also active. Although pollutant emissions from traffic vehicles have been reduced by technological advancements, ventilation functions have become an important part of tunnels, as they can fill exhaust gases in tunnels as long as several kilometers and in tunnels with traffic congestion.
Ebara has manufactured tunnel ventilation fans since 1958 and has delivered them to many major tunnels in Japan. By understanding the environment in the tunnel from the data of measuring equipment and optimal ventilation control, we provide an environment where passing vehicles can always drive safely. In addition, they play a role in flue gas in the event of a fire, contributing to a safe and secure environment in the tunnel.
