Natural water in the ground could be used as a low-carbon heat source in many towns and cities, according to research from the British Geological Survey (BGS). A three-year-study examined the environmental impact of a ground-water heating scheme. Data was gathered from a natural ground-water system below Cardiff. The BGS are now calling for more research to see if similar technology could be used on a larger scale. The £300,000 study examined the environmental impact of a ground-water heating scheme which heated a school building in the Welsh capital, using the warmth stored in the natural water system below ground and electric heat pumps. A network of 61 bore-holes equipped with temperature and water-level sensors were used to build up a picture of the ground-water temperatures. BGS research leader David Boon said: “We know the use of ground source heat pumps changes the ground temperature by several degrees Celsius.
BBC 22nd Oct 2019 read more »