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Playing it cool
On Tue, 1 Jul 2008, Tom Barry wrote:
According to TfL, the heating effect arises because of the incremental heating and cooling caused by each passing train's energy consumption. The frequency of trains means the cooling of the tunnel walls is that little bit less than the heating, so over the years the ground heats up because it never gets a long enough break between trains. This is rather borne out by the original Bakerloo Line claim that it was an nice, cool way to travel in the heat of the summer - it was decades before the effect was realised. This seems like an extraordinary proposition to me. Could you refer me to any documents giving more details? Presumably if you could shut the tube for a few years you could reverse it, but I can spot a couple of problems with that idea. Or do a one-week shutdown and blow cold, damp air through the tunnels. tom -- .... which may end up with the women in your office cornering you at the office xmas party and taking turns at jamming their bootclad feet into your genitals. This is what is known as the Wrong Kind of Footsie. -- Lord Foom |
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