There's a BBC report at
http://news.bbc.co.uk/2/hi/uk_news/england/leicestershire/6466501.stm
that the test track at Asfordby will be used to test the next generation
of tube trains which will be fitted with air conditioning.

Surely using energy to pump heat out of the trains into the tunnels will
just increase the temperature there. Has a solution to the problem of
cooling the system as a whole been found? I have heard groundwater
mentioned as a possible heat sink but building and running a full system
would be horribly expensive.
--
Goalie of the Century

"Goalie of the Century" wrote

Surely using energy to pump heat out of the trains into the tunnels will
just increase the temperature there. Has a solution to the problem of
cooling the system as a whole been found? I have heard groundwater
mentioned as a possible heat sink but building and running a full system
would be horribly expensive.

Sub-surface stock (Met/District/Circle/H&C) will be air-conditioned. Tube
stock will only have air-conditioning in the driver's cabs. Trials of
groundwater colling are being carried out at Victoria.

Peter

Sub-surface stock (Met/District/Circle/H&C) will be air-conditioned. Tube
stock will only have air-conditioning in the driver's cabs. Trials of
groundwater colling are being carried out at Victoria.

Note to myself: rent next flat within walking distance from Met/
District/Circle/H&C.

alex_t wrote:
Sub-surface stock (Met/District/Circle/H&C) will be air-conditioned.
Tube stock will only have air-conditioning in the driver's cabs.
Trials of groundwater colling are being carried out at Victoria.

Note to myself: rent next flat within walking distance from Met/
District/Circle/H&C.

Note to myself: rent basement flat within spitting distance of Victoria.

On Mar 20, 10:40 am, "John Rowland"
wrote:
alex_t wrote:
Sub-surface stock (Met/District/Circle/H&C) will be air-conditioned.
Tube stock will only have air-conditioning in the driver's cabs.
Trials of groundwater colling are being carried out at Victoria.

Note to myself: rent next flat within walking distance from Met/
District/Circle/H&C.

Note to myself: rent basement flat within spitting distance of Victoria.

I wonder why Metronet and Tubelines can't club together and have a
joint test track instead of two seperate ones at double the cost.

Kevin

"Kev" wrote in message
oups.com...
On Mar 20, 10:40 am, "John Rowland"
wrote:
alex_t wrote:
Sub-surface stock (Met/District/Circle/H&C) will be air-conditioned.
Tube stock will only have air-conditioning in the driver's cabs.
Trials of groundwater colling are being carried out at Victoria.

Note to myself: rent next flat within walking distance from Met/
District/Circle/H&C.

Note to myself: rent basement flat within spitting distance of Victoria.

I wonder why Metronet and Tubelines can't club together and have a
joint test track instead of two seperate ones at double the cost.


I would imagine that by the time Tubelines are introducing new stock they
will be able to use the test track too. The vastly greater number of SSL
trains being provided by Metronet makes it sensible for them to be running
the place. Aren't the Victoria and Bakerloo (both Metronet), due their
replacement stock before any of Tubelines?

Paul

"Goalie of the Century" wrote in message
...
There's a BBC report at
http://news.bbc.co.uk/2/hi/uk_news/england/leicestershire/6466501.stm
that the test track at Asfordby will be used to test the next generation
of tube trains which will be fitted with air conditioning.

Surely using energy to pump heat out of the trains into the tunnels will
just increase the temperature there. Has a solution to the problem of
cooling the system as a whole been found? I have heard groundwater
mentioned as a possible heat sink but building and running a full system
would be horribly expensive.

You're quite correct about the difficulties of airconditioning the 'tube'
trains - unfortunately since TfL collectively decided that they would use
'tube' for their whole system, there seems to be a lack of a short word to
define the sub surface railway, which these trains are for. By announcing
'air conditioned tube trains' now they are just leaving themselves open to
much criticism when the next generation of real tube trains is bought, for
the Victoria line I believe...

Must be a slow news day in BBC Leicester though, this was first announced 5
weeks ago:

http://www.metronetrail.com/default....=1170757840171

Paul

"Kev" wrote in message
oups.com
On Mar 20, 10:40 am, "John Rowland"
wrote:
alex_t wrote:
Sub-surface stock (Met/District/Circle/H&C) will be
air-conditioned. Tube stock will only have air-conditioning in the
driver's cabs. Trials of groundwater colling are being carried out
at Victoria.

Note to myself: rent next flat within walking distance from Met/
District/Circle/H&C.

Note to myself: rent basement flat within spitting distance of
Victoria.

I wonder why Metronet and Tubelines can't club together and have a
joint test track instead of two seperate ones at double the cost.

Does Tube Lines have a separate test track, apart from the 900m
signalling test track within Highgate depot or the fourth track at South
Ealing? As (I think) it's using a different signalling system to
Metronet, there doesn't seem to be much point in using the same test
track.

As far as new trains are concerned, I assume it'll be a few years before
new Piccadilly Line trains need testing. In contrast, Metronet has
all-new fleets coming soon for the Victoria Line and all the subsurface
lines -- a very large fleet of getting on for 2000 cars.

In message , at 11:20:54 on
Tue, 20 Mar 2007, Paul Scott remarked:
Must be a slow news day in BBC Leicester though, this was first announced 5
weeks ago:

http://www.metronetrail.com/default....=1170757840171

In November 2005, Alan Duncan MP led an Early Day Motion
supported by 38 MPs in the House of Commons condemning the
decision to allow the line to close. "This House notes that the
loss of the facility will mean that new trains will either have
to be tested on the already congested rail network or have to
enter service without being full tested, therefore putting
passenger safety at risk"

Whereas there were reports last week, I think, of testing being done in
the Czech Republic.
--
Roland Perry

"Roland Perry" wrote in message
...
In message , at 11:20:54 on
Tue, 20 Mar 2007, Paul Scott remarked:
Must be a slow news day in BBC Leicester though, this was first announced
5
weeks ago:

http://www.metronetrail.com/default....=1170757840171

In November 2005, Alan Duncan MP led an Early Day Motion
supported by 38 MPs in the House of Commons condemning the
decision to allow the line to close. "This House notes that the
loss of the facility will mean that new trains will either have
to be tested on the already congested rail network or have to
enter service without being full tested, therefore putting
passenger safety at risk"

I hadn't realised that the main-line TOCs (as opposed to London Underground)
no longer used Old Dalby, as the report implies by the talk of saving the
line from closure by the decision to test LU trains there. I'd assumed that
Old Dalby would still be used for testing main line trains - and now,
additionally, LU trains. If main-line trains are no longer tested there,
then where are they tested?