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-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 forc
by lb1lf 6y ago
-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.
The fans look like good ol' jet engines.[0]
[0] https://www.systemair.com/fileadmin/_processed_/c/7/csm_Systemair_36_c39049a5e2.jpg https://www.systemair.com/fileadmin/_processed_/c/7/csm_Syst...
- labawi 6y agoProbably 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.
- halgir 6y agoI 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.