Still Waters Posted June 22, 2014 #1 Share Posted June 22, 2014 Vast amounts of hot water from household appliances, businesses and factories gurgle down the drain every day, wasting not only H2O but also another precious resource: heat energy. Not, however, in the Austrian town of Amstetten, where a pilot project by the local utility company is "recycling" this energy from a place where normally few dare to tread -- the sewer. https://uk.news.yaho...17.html#KR5flaB Link to comment Share on other sites More sharing options...
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