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Overheating on the Tube
Jonathan Morris wrote: Neil Williams wrote: ...which would instead cause similar crowds in stations or just outside. It wouldn't work, which is probably why it hasn't been done. Why can't we air condition the stations at least? These can be just as unbearable, and it can't be TOO difficult to do. Expensive, yes, but a decent system could clean and filter the air too. I know the deep level stations have the problem of heat extraction, but if you can sort out the stations then it must help overall passenger comfort. Else have part of a train that collects the extracted heat, which is then vented at a station? Jonathan "Might" be feasible on a small station, but a place like Oxford Circus has a total of 4 2/3 miles* of passageway (inc non public). Now look at the air con plants at your place of work and consider where you'd put one big enough to make a difference round OXO C , or any other decent sized central London station. And as for Bank ... The trains have a similar problem - any aircon plant big enough to deal with 100 people per carriage is going to be too big to fit under the floor or seats (scale up a four person car plant ...). And you have to carry the heat out of the tunnel, not dump it in so you would need one hell of a heat sink - with the same space constraint problem, as well as a reliable system of dumping the heat when in the open and not in the tunnel - and thats without the problem of the Victoria Line where the trains only surface when in the depot... The other issue is cost / benefit. After all do you really want to pay for all this expensive engineering when the number of days the tube is really unbearable is in finger counting territory in a typical year ? |
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