But, I'm curious how fresh air is pumped into the tunnels?
I'm guessing that there might be some sort of mechanism for this?
Maybe pressurized air pipes and/or ducts/fans at regular intervals, and/or some other form of ventilation system?
Observation: For future underground tunnel systems, if only electric vehicles are permitted to enter, then there might not be as hard a requirement for an apropriate ventilation system as there would be for fossil-fuel vehicles...
-In the subsea tunnels a bit further east, in Norway, large fans mounted at regular intervals help maintain a draft through the tunnel.
I don't think much forced ventilation is needed for normal operation - the blades spin very leisurely, if at all - but in case of fire they can direct the smoke and heat away from the bulk of the people trapped inside.
Probably this. And burning batteries may produce less smoke, but it can be more "fun" than regular gasoline or even burning plastics, though even plastics are a sufficient reason for good ventilation.
I drove through the new tunnel today, and this is exactly what the ventilation looks like. I noticed they spun very slowly, which is likely variable based on detected air quality.
If it were electric vehicles only, the more traffic, the more air flow from vehicles stirring it up. They might end up asking people to drive through it more in order to keep the air from getting stagnate. That'd be an interesting turn of events.
There are tunnels that have this requirement. It took years longer than planned to complete the new Berlin airport. The underground trainstation was already finished, and they had to drive in there with empty trains every day for air exchange to avoid mold etc.
But, I'm curious how fresh air is pumped into the tunnels?
I'm guessing that there might be some sort of mechanism for this?
Maybe pressurized air pipes and/or ducts/fans at regular intervals, and/or some other form of ventilation system?
Observation: For future underground tunnel systems, if only electric vehicles are permitted to enter, then there might not be as hard a requirement for an apropriate ventilation system as there would be for fossil-fuel vehicles...