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Underground water pipes: Another way for cities to keep cool

By District Energy posted 07-25-2019 16:17


Amelie Bottolier-Depois, Tech Explore


As Paris swelters in record-breaking heat, visitors to some of the French capital's iconic landmarks are being kept cool without even knowing it by a labyrinthine network of underground water pipes.

With climate change making hot weather periods more likely each year, proponents of systems known as "district cooling networks" argue the technology could provide a planet-friendly alternative to air conditioning when the mercury soars.

With around 80 kilometres (50 miles) of cooling pipes snaking beneath the French capital, a number of energy firms pump ultra-cooled water from large storage tanks to underground sub-stations and up into the buildings of around 700 clients.

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