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Post by 700101 on Jun 12, 2019 9:40:54 GMT
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Post by snowman on Jun 12, 2019 10:10:18 GMT
Interesting that they will be 5 car First in service in 2023 so a 4 year wait for these Also air conditioned (does this just leave the peasant transport , buses, as only TfL vehicles not getting a/c as standard spec)
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Post by Eastlondoner62 on Jun 12, 2019 10:15:31 GMT
Interesting that they will be 5 car First in service in 2023 so a 4 year wait for these Also air conditioned (does this just leave the peasant transport , buses, as only TfL vehicles not getting a/c as standard spec) I don't think the new tube trains coming up will have Air Conditioning. They will apparently be air cooled like the buses are but not fully air conditioned. I imagine air conditioning on the deep level is a while away due to the pressure changes and lack of air flow the tunnels produce.
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Post by ronnie on Jun 12, 2019 11:48:10 GMT
Interesting that they will be 5 car First in service in 2023 so a 4 year wait for these Also air conditioned (does this just leave the peasant transport , buses, as only TfL vehicles not getting a/c as standard spec) I don't think the new tube trains coming up will have Air Conditioning. They will apparently be air cooled like the buses are but not fully air conditioned. I imagine air conditioning on the deep level is a while away due to the pressure changes and lack of air flow the tunnels produce. How do air conditioned underground trains in the tropics cope I wonder
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Post by snoggle on Jun 12, 2019 12:12:52 GMT
I don't think the new tube trains coming up will have Air Conditioning. They will apparently be air cooled like the buses are but not fully air conditioned. I imagine air conditioning on the deep level is a while away due to the pressure changes and lack of air flow the tunnels produce. How do air conditioned underground trains in the tropics cope I wonder The system is designed overall to cope with air conditioning. You need trains, stations, tunnel design and ventilation system design to be designed as an overall system to cope with the energy and heat impacts of air conditioning. Most modern Metros built in hot countries take all this into account. London invented the tube railway and things like air conditioned were never considered. You will see a holistically designed system in London when Crossrail opens. Its trains are air conditioned and the tunnel section is designed to cope with the heat they generate when the air con is working at full whack.
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Post by snowman on Jun 12, 2019 12:23:25 GMT
I don't think the new tube trains coming up will have Air Conditioning. They will apparently be air cooled like the buses are but not fully air conditioned. I imagine air conditioning on the deep level is a while away due to the pressure changes and lack of air flow the tunnels produce. How do air conditioned underground trains in the tropics cope I wonder Normal practice is to cool the stations, sometimes using water from rivers etc that is colder. Use various heat pumps to transfer the temperature differences. The problem in London is not the annual ambient temperature (forgotten the value, but about 15c), any tunnel or cave tends to default to this annual midpoint. The problem is that the tube tunnels are fairly small diameter and for 100 years the method of working the trains was use electricity and convert energy to momentum (and carriage heating), also the control mechanism was rheostatic (basically connected as series of resistors which resemble electric bar fires underneath the train to restrict voltage to motors for speed control). Having utilised all this extra energy, promptly waste this energy by using friction brakes, which heat the air in the tunnels and permeates into the ground around the tunnel, so now, decades later, some of the tunnel walls (often cast iron rings which conduct heat well) are 10-15c warmer than when built, and this warm ground extends few metres around the tunnel. The first time I went on Jubilee line extension 19 years ago, the stations were seriously cold. The latest trains with regenerative braking and no rheostats don't need to heat the tunnels, so no longer fighting a hot vs cold war (a caveat is there is a some blended friction braking on motored axles, and friction braking on unmotored ones). Whilst underground the doors are open at stations so easiest to cool the station and use this to partly chill the train, so on-train a/c can be smaller and set to normally run only when train is in regen mode.
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Post by rif153 on Jun 12, 2019 12:54:19 GMT
Interesting that they will be 5 car First in service in 2023 so a 4 year wait for these Also air conditioned (does this just leave the peasant transport , buses, as only TfL vehicles not getting a/c as standard spec) I don't think the new tube trains coming up will have Air Conditioning. They will apparently be air cooled like the buses are but not fully air conditioned. I imagine air conditioning on the deep level is a while away due to the pressure changes and lack of air flow the tunnels produce. I presume they will have five longer carriages
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Post by ThinLizzy on Jun 12, 2019 13:18:32 GMT
I don't think the new tube trains coming up will have Air Conditioning. They will apparently be air cooled like the buses are but not fully air conditioned. I imagine air conditioning on the deep level is a while away due to the pressure changes and lack of air flow the tunnels produce. I presume they will have five longer carriagesĀ The trains will be around the same length as a 3-car B2007 vehicle, which come in at just under 90 metres
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Post by richard on Jun 12, 2019 13:49:52 GMT
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Post by snowman on Aug 5, 2019 13:54:12 GMT
It appears the existing DLR stock is not RVAR (rail vehicle assesibilty regulations) compliant Exemptions for both the B92 stock and the 2007 stock until the end of their life have been requested DLR exemption to RVAR application
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Post by routew15 on Feb 25, 2020 23:05:45 GMT
link to tweet
Local Councillor for LBTH has put in an Freedom of Information request to TfL on the new DLR rolling stock and future line capacity. It appears, 30tph and a 65% increase in capacity is an aspiration for the Lewisham-Canary Wharf line.
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Post by snowman on Oct 8, 2020 20:32:16 GMT
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Post by ThinLizzy on Nov 19, 2020 17:10:38 GMT
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Post by richard on Nov 19, 2020 19:14:13 GMT
I like it looks similar to the 09 stock on the Victoria Line
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Post by vjaska on Nov 19, 2020 22:27:56 GMT
Not too bad in all honesty although my only gripe would be I'd prefer to have a couple more front facing seats rather than sideways ones at the front of the train.
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