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Heat pumps extract warmth from ice cold water

By Richard Anderson Business reporter, BBC News The residents of Drammen have rather an unusual way of keeping warm, the BBC have reported today. 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. So cold, in fact, that open water swimmers classify it as freezing. But somehow, an open-minded district heating company, backed by an environmentally-conscious city council, together with a large measure of Glaswegian nous, have built a system to meet the heating needs not just of Drammen's 65,000 residents, but its businesses as well.

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