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Playing it cool
Tom Anderson wrote:
On Tue, 1 Jul 2008, Tom Barry wrote: ... This seems like an extraordinary proposition to me. Could you refer me to any documents giving more details? tom Yup, someone took notes at a TfL talk in March, which are online he http://www.freewebs.com/going_underg...ogspot.com.doc Relevant section: "Most heat is generated from the equipment, brakes etc underneath the train. Plans are being made to draw this heat out from under the trains when they stop at platforms and then vent this heat out of the stations. Obviously this would only work in those stations that have adequate ventilation to street level..." Interesting stuff, particularly since the TfL tube cooling press release quoted the Mayor thus: ‘It always perplexed me that boffins could produce mobile phones the size of a credit card yet passengers would emerge dripping with sweat from Tube trains that lacked air conditioning.' The 'boffins' do at least appear to be on the case, here (already ruling out air-conditioned Tube trains straight off, for obvious reasons), although whether or not any of the current crop of ideas reaches operational status is open to question. This effect was known about when the Jubilee was extended, so it's hardly new stuff. What's probably true is that it's one of those engineering problems where there's no magic bullet big ticket way of fixing it (other than total replacement), but a few judicious improvements could add up to a considerable improvement. (other) Tom |
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