Heat pumps extract warmth from ice cold water

Image: Drammen's ice cold fjord is not an obvious source of heat for the city's inhabitants and businesses

bbc.com - March 9th 2015 - Richard Anderson

The residents of Drammen have rather an unusual way of keeping warm.

The county capital, 40 miles west of Oslo in Norway, extracts most of the heat needed to insulate its houses, offices and factories against the biting Nordic cold from the local fjord, or more precisely from the water held within it.

Averaging 8C throughout the year - it's literally cold enough to take your breath away.

(VIEW COMPLETE ARTICLE)