Map reveals hotspots of the London Underground

[whole diary]

[Chris from Nailsea]

From the BBC^» (British Broadcasting Corporation - home page):

The warmest parts of the Underground network have been revealed in a map compiled by Transport for London (TfL^» (Transport for London - about)).

The Central Line was the hottest, with temperatures of 32C (90F) between Holland Park and Mile End.

Most stations on the Bakerloo Line reached 32C, though temperatures eased further south on the line.

The map covers most Underground lines in zones one and two between 1600 BST and 1900 BST on 28 July last year - the hottest day of the year.

The Jubilee Line was significantly cooler with most stations recording temperatures of 25C (77F).

The map has been used by TfL for years to help officials monitor temperature levels on the network.

[Mookiemoo]

From the BBC^» (British Broadcasting Corporation - home page):

The warmest parts of the Underground network have been revealed in a map compiled by Transport for London (TfL^» (Transport for London - about)).

The Central Line was the hottest, with temperatures of 32C (90F) between Holland Park and Mile End.

Most stations on the Bakerloo Line reached 32C, though temperatures eased further south on the line.

The map covers most Underground lines in zones one and two between 1600 BST and 1900 BST on 28 July last year - the hottest day of the year.

The Jubilee Line was significantly cooler with most stations recording temperatures of 25C (77F).

The map has been used by TfL for years to help officials monitor temperature levels on the network.

That explains why I loathe the tube and prefer to cycle/walk - bakerloo/central is where I spent most of the time, closely followed by district!   at least district gets over ground a fair bit so gets fresh air to ventilate

[inspector_blakey]

Pah. Amateurs. It was 36C with humidity here the other day...

[moonrakerz]

Pah. Amateurs. It was 36C with humidity here the other day...

........when I were a nipper......................!

[Mookiemoo]

Pah. Amateurs. It was 36C with humidity here the other day...

Bet the Metro is air conned though!

[inspector_blakey]

Only once you get on the train. The stations themselves aren't, and waiting on the platform can be distinctly nasty despite the odd temporary electric fan they put up.

[Btline]

The new A/C Tube trains will be a relief I have to say!

[johoare]

The new A/C Tube trains will be a relief I have to say!

Well as long as they don't buy their air con from the same place as the air con for the Reading/Paddington turbo's were bought.. it'll be even hotter if they do! 

[inspector_blakey]

Hmm. Doubtless someone has looked into this and concluded that a/c on underground trains is a good idea, but there's the small matter of the laws of thermodynamics (the scourge of the early months and years of my university career, aaaarrrrgh) to contend with.

The relevant point here is that energy cannot be created or destroyed, only moved around or converted from one form into another (so that's why brakes get hot, because they're converting the kinetic/movement energy of a vehicle into heat, sorry if this is teaching everyone to suck eggs...   ). Air conditioning can't "destroy" heat, it just moves it outside the train, into the tunnel or station. I can just about see this being ok on the sub-surface lines but would be amazed if it is seriously proposed for deep-level underground lines where the stations and tunnels are already pretty warm in the summer.

[Btline]

Just air-condition the stations and tunnels then!