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Waste heat from the Tube warms homes in Islington

Waste heat from the London Underground network is now capable of providing heating and hot water to more than 1,350 homes, a school and two leisure centres in Islington thanks to the new Bunhill 2 Energy Centre. 

The centre uses state-of-the-art technology on the site of a disused City Road Underground station, transforming this to house a huge underground fan which extracts warm air from the Northern line tunnels below. The warm air is heated again using heat pumps to reach around 80°C and then pumped to buildings in the neighbourhood through a new 1.5 km network of underground pipes. 

In addition, the two-metre fan, installed in an existing six-storey London Underground mid-tunnel ventilation shaft, can also be reversed to help with cooling Tube tunnels in the summer. 

Photo: Ramboll 

News Item details


Journal title: Energy World

Organisation: Transport for London (TfL)

Subjects: Heat pumps, District heating, Heat

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