please empty your brain below
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I'm just wondering if the aircon is gonna make everyone have really cold legs
Dan | 06.03.21 - 7:27 a.m. | #
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They said 2023 in 2014
They say 2025 in 2021
So it'll be 2027 in 2028
Oh hang on...
daveid76 | 06.03.21 - 8:24 a.m. | #
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I am surprised we didn't get a grimmace from you at "Opened in 1863, the London Underground – also known as the ‘Tube’"
Simon | Homepage | 06.03.21 - 8:32 a.m. | #
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That'll be the air conditioning Boris said was impossible to instal on the underground when he was mayor .......
Brian | 06.03.21 - 9:34 a.m. | #
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The first announcement was regarding a concept design that had been produced.
The second annoucement was to tell us that Siemens had been awarded the contract. Naturally, it featured Siemens' interpretation of the concept design.
The third one was to show the final design that Siemens had arrived upon, and which has changed notably from the original concept.
I don't think any of these announcements were particularly unwarranted - each time we recieved some new information as to what has transpired on the project. As you say, the similarities that are present are due to the original design being quite good.
Medford | 06.03.21 - 9:34 a.m. | #
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If the trains are air conditioned, then I guess the heat from inside the train is pumped to the outside.
So the tubes will get hotter, won't they?
Wouldn't it be better to air condition the whole tube system itself and pump the heat up into the air?
Joho | Homepage | 06.03.21 - 9:42 a.m. | #
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Joho - More powerful fans have been/are being installed in ventilation shafts along the Piccadilly line or else being otherwise upgraded.
Medford | 06.03.21 - 9:50 a.m. | #
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Heaven preserve us from amateur scientists.
Keith | 06.03.21 - 9:50 a.m. | #
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The final interior is not as stylish or cosy as the 2014 concept but has a good payoff in making the car look taller (unless this is a trick of the camera eye-height). If I’m being critical, I’d say that Siemens always think trains should have all the charm of the interior of a refrigerator, but it’s an improvement on their original pre-tender concept the flying coke can.
Finally doing away with the single door vestibules, having lower floors and walk-through represents the biggest advance in design since the 1920’s, so a thumbs-up overall.
NickW | 06.03.21 - 10:42 a.m. | #
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Nick W - The eye-height is certainly lower in the 2021 picture - approximately head-height for a seated passenger, whereas the 2014 is closer to head height for a standing one.
Reflecting modern trends, the seat cushions look less deep on the newer picture
timbo | 06.03.21 - 10:48 a.m. | #
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My take on your comment ‘You don’t forget diagonal headlamps like those…except it seems a lot of people do’
IMO the internet plays some part in peoples forgetfulness, with in theory the whole worlds knowledge at your finger tips, there is no need to personally remember details, you can always Google it.
Michael | 06.03.21 - 11:02 a.m. | #
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The 2014 interior certainly looks more inviting and less cold, to me, than the 2021 version
mikeH | 06.03.21 - 11:29 a.m. | #
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I like your comparison of the media reports - makes it very clear that Ian gives a much more accurate analysis of what's actually just been announced than any of the collective-amnesia mainstream media.
Ewan | 06.03.21 - 11:42 a.m. | #
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Reminds me of the helmets Daft Punk used to wear, is this stock also going to be used on other lines?
dg writes: Yes.
Neil | 06.03.21 - 12:13 p.m. | #
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More reliable, easier to maintain, cheaper to run seem to be taking a back seat as usual, to pretty.
Scrumpy | 06.03.21 - 4:42 p.m. | #
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Indeed. Glad someone else recognised the 'new' press release images as being very familiar with something from some time ago. And with TfL being perennial late on delivery, let's see if these turn up in 2025 as "planned".
Jordan D | 06.03.21 - 5:59 p.m. | #
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The first thing I noted upon seeing this week's image was "oh, they've corrected the destination box from the vague and nonsensical 'Heathrow' to 'Cockfosters'". Maybe the designers at Siemens read your tweet.
TheLupineOne | 07.03.21 - 11:00 a.m. | #
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Advances in electrical motors mean they can be smaller and emit less heat. The point is the new motor use one third less energy and therefore one third less heat into the tunnels.
This along with more energy efficient air conditioning units means that the trains can have air conditioning without putting more heat into the tunnels.
The really expensive problem is how hot the tunnels and stations are.
The problem is when the deep tubes were first built the surrounding clay was cold and all the heat from the tunnels was sucked into the ground. They used to advertise about going down into the tube to escape the summer heat. But over time surrounding clay has absorbed the heat and now acts as an enormous heat store.
The problem is made worse is as the tube has got busier they have improved the signalling to increase train frequency. Which pumps more heat into the tunnels.
The tube does not have enough ventilation shafts to let the heat escape.
Air conditioned trains will help with total journey times spent in the heat, but at some point money needs to be spent to try and cool the tube down, otherwise it will become unusable in the summer months. If we see regular heat waves.
rational plan | 07.03.21 - 8:32 p.m. | #
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