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> offered a prize of £100,000 to anyone who could come up with fresh ideas Too late now, but I wonder if they considered district cooling, where e.g. cold wate

> offered a prize of £100,000 to anyone who could come up with fresh ideas Too late now, but I wonder if they considered district cooling, where e.g. cold water from rivers is used as an alternative to air conditioning. Seems to be used successfully in my hometown of Munich: https://www.swm.de/english/m-fernwaerme/m-fernkaelte.html https://www.swm.de/english/m-fernwaerme/m-fernkaelte.html

tonfa 9y ago
> Nobody could think of anything TfL wasn’t already trying, and the prize went unclaimed. I'd assume they did, especially if it's something that's done elsewhere.
avianlyric 9y ago
They have used water cooling from rivers in some stations (I can't find the source, but I think it was a previous ianvisits post). Unfortunately only a couple of stations have an appropriate water supply, and enough free vertical shaft space to fit the pipes.
- twic 9y ago
  There are some details on that in the Ian Visits article linked to in another comment. There was also this, from 1938, although i don't know where they got the water: https://en.wikipedia.org/wiki/Tottenham_Court_Road_chiller https://en.wikipedia.org/wiki/Tottenham_Court_Road_chiller
- inetknght 9y ago
  The article even mentions it! > Elsewhere, they’ve been using cool ground water to cool some of the stations. An experiment at Victoria station was the first, as water from the River Tyburn was used to cool the air in the station. This was only an experiment, but at Green Park, a permanent version was installed in 2012.
bb611 9y ago
From the article in the top comment : > Elsewhere, they’ve been using cool ground water to cool some of the stations. An experiment at Victoria station was the first, as water from the River Tyburn was used to cool the air in the station. This was only an experiment, but at Green Park, a permanent version was installed in 2012.

tonfa 9y ago

> Nobody could think of anything TfL wasn’t already trying, and the prize went unclaimed. I'd assume they did, especially if it's something that's done elsewhere.

avianlyric 9y ago

They have used water cooling from rivers in some stations (I can't find the source, but I think it was a previous ianvisits post). Unfortunately only a couple of stations have an appropriate water supply, and enough free vertical shaft space to fit the pipes.

twic 9y ago
There are some details on that in the Ian Visits article linked to in another comment. There was also this, from 1938, although i don't know where they got the water: https://en.wikipedia.org/wiki/Tottenham_Court_Road_chiller https://en.wikipedia.org/wiki/Tottenham_Court_Road_chiller
inetknght 9y ago
The article even mentions it! > Elsewhere, they’ve been using cool ground water to cool some of the stations. An experiment at Victoria station was the first, as water from the River Tyburn was used to cool the air in the station. This was only an experiment, but at Green Park, a permanent version was installed in 2012.

bb611 9y ago

From the article in the top comment : > Elsewhere, they’ve been using cool ground water to cool some of the stations. An experiment at Victoria station was the first, as water from the River Tyburn was used to cool the air in the station. This was only an experiment, but at Green Park, a permanent version was installed in 2012.