1997 | OriginalPaper | Buchkapitel
Thermal water systems
verfasst von : Marius Albu, David Banks, Harriet Nash
Erschienen in: Mineral and Thermal Groundwater Resources
Verlag: Springer Netherlands
Enthalten in: Professional Book Archive
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The temperature of groundwater is influenced by air temperature to depths of about 50 m. Below this, additional heat is obtained from the rocks with which the water is in contact. The total amount of heat stored in the top 10 km of the earth’ s crust represents more than 5000 times the thermal energy available in world coal resources (Bouwer, 1978), but only a fraction of this is accessible.