Travellers at Stockholm's Central Station. (Photo: Fredrik Sandberg/Scanpix)
Environment

Body heat used to warm office building

"It's possible because we own the buildings..."
4:29 min

Swedes are taking the use of human body heat one more step – cooling off the overheated Stockholm central train station to warm up a near-by office building - cutting 25% of the heating costs which is no small savings in this cold-weather capital.

Evaluations continue in what is believed to be a unique method to make use of a revolutionary heating solution.

Taking the heat of some 250,000 daily visitors to the Stockholm central train station, air conditioners sink the temperatures in the main hall and especially in the many shops, restaurants and cafés in the building – heating up water and pumping this underground to warm up a huge, glass and steel-walled office building complex opposite the station.

The Swedish real estate company Jernhusen owns the office building, the central station complex and the space in between. Klas Johansson, the head of the company's environmental division, is the man behind the idea.

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