China Naming Network - Weather knowledge - Under what circumstances does the jet fan in the tunnel section operate?
Under what circumstances does the jet fan in the tunnel section operate?
This definitely depends on your tunnel environment. If it is a general tunnel that is opened when the CO concentration exceeds the standard, when there is a fire or when visibility is low, if it is a long tunnel such as a subway tunnel, it will be opened. It must be turned on while the vehicle is running to alleviate the air pressure changes caused by the traffic flow in the tunnel.