wrote:
I've also seen large, cylinders of liqiid gas, Nitrogen I think, on
street corners, chained to a pole of some sort, with the gas being
piped underground. I think this was being done by Verizon
(telephones), so pipe freezing doesn't seem likely. Any ideas?

Superconducting power cables? Seems unlikely they would work like that
but I'm pretty sure there are some trials of this technology in the US.

--
To contact me take a davidhowdon and add a @yahoo.co.uk to the end.

"Furles" write:
I've also seen large, cylinders of liqiid gas, Nitrogen I think, on
street corners, chained to a pole of some sort, with the gas being
piped underground. I think this was being done by Verizon
(telephones), so pipe freezing doesn't seem likely. ...

I noticed this myself the last time I was in New York, and had a chance
to ask a Verizon technician about it. It's simple cooling; the gas
cools as it expands on leaving the cylinder. As I recall what the man
told me, that they do it if the underground electronics are found to be
overheating. One cylinder lasts about a week.

I didn't ask why they use nitrogen, because that was obvious. It won't
support combustion and thus helps suppress any fire that might start
due to the overheating, and it's relatively cheap.
--
Mark Brader | "It never occurred to me that a living person could be
Toronto | used as a blowtorch, but we admit human beings are a
| bit special, don't we?" --Hal Clement: STILL RIVER

My text in this article is in the public domain.

In message . com,
writes

Laurence Payne wrote:

Battersea Power Station used to pipe hot water under the Thames to
provide heating to Dolphin Square and Pimlico.

When the station closed thiis was replaced by a coal-fired boiler house
between the power station and the railway. This was later converted to
'dual', I assume gas and oil, firing according to its sign. Quite
recently this was demolished, does anyone know what has now replaced
it?

I always thought that the excess heat from Battersea was used to heat
homes on the Churchill Estate in Pimlico but not Dolphin Square. Have
I been misinformed?
--
Ian Jelf, MITG
Birmingham, UK

Registered Blue Badge Tourist Guide for London and the Heart of England
http://www.bluebadge.demon.co.uk

In article ,
Ian Jelf wrote:
In message . com,
writes
Laurence Payne wrote:

Battersea Power Station used to pipe hot water under the Thames to
provide heating to Dolphin Square and Pimlico.

When the station closed thiis was replaced by a coal-fired boiler house
between the power station and the railway. This was later converted to
'dual', I assume gas and oil, firing according to its sign. Quite
recently this was demolished, does anyone know what has now replaced
it?

I always thought that the excess heat from Battersea was used to heat
homes on the Churchill Estate in Pimlico but not Dolphin Square. Have
I been misinformed?

Yes. Dolphin Square was built first - in the 1930s, shortly after
Battersea Power Station, so the pipe under the Thames carrying the
excess heat was built for it; Churchill Gardens was built after the
war and it was realised that there was still excess heat so the
system was extended to cover it.

--
http://www.election.demon.co.uk
"We can also agree that Saddam Hussein most certainly has chemical and biolog-
ical weapons and is working towards a nuclear capability. The dossier contains
confirmation of information that we either knew or most certainly should have
been willing to assume." - Menzies Campbell, 24th September 2002.