3 ms·

At first, New York and London [0] metro lines were cool too. Pumping heat underground will not solve your problems in the long run. But this is only nitpick to

At first, New York and London [0] metro lines were cool too. Pumping heat underground will not solve your problems in the long run. But this is only nitpick to this one particular cooling method. Maybe something like sending your heat to space[1] or better insulation will help. [0] https://www.wired.co.uk/article/central-line-temperature-london-weather-heatwave https://www.wired.co.uk/article/central-line-temperature-lon... > When much of central London’s Tube network opened in the early 1900s, temperatures in tunnels and at stations were recorded at around 14C. [1] https://physicsworld.com/a/keeping-buildings-cool-by-sending-heat-into-outer-space/ https://physicsworld.com/a/keeping-buildings-cool-by-sending...

ceejayoz 7y ago
From the article on London: > To understand how more of the Central line could be cooled down, just look at the Victoria line. In 2006, a similarly experimental groundwater cooling system was installed at Victoria station to lower temperatures in mid-platform areas. In 2011, TfL completed the installation of 13 ventilation shafts throughout the Victoria line, while the new fleet of trains running on the line allows TfL to operate a regenerative braking system, which returns power to the rails when a train brakes. And when a whopping 38 per cent of heat generation on the London Underground comes from trains braking, that’s a pretty big deal. It's basically another example where sensible design can make a huge difference.