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Enhanced-Geothermal-Systems (EGS), Hot-Dry-Rock Systeme (HDR), Deep-Heat-Mining (DHM)

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Geothermie

Zusammenfassung

Mit dem Enhanced-Geothermal-System (EGS) soll der tiefere Untergrund als Wärmequelle zur Stromerzeugung und Wärmegewinnung genutzt werden (Abschn. 4.2). Synonyme sind Hot-Dry-Rock (HDR) oder Deep-Heat-Mining (DHM). Der Begriff HDR stammt aus der Anfangsphase dieser Technologie-Entwicklung, in der man noch von „trockenen“ Verhältnissen in großer Tiefe im kristallinen Grundgebirge, also im Wesentlichen in Graniten und Gneisen, ausging. Alle Tiefbohrungen, auch diejenige auf der Halbinsel Kola mit 12,7 km tiefste Bohrung der Welt, zeigten jedoch, dass die obere Erdkruste zumindest „feucht“, manchmal aber auch „nass“ sein kann. Die obere Erdkruste ist grundsätzlich mehr oder weniger stark geklüftet. Die Klüfte sind teilweise offen; in ihnen zirkuliert ein salinares, oft gasreiches Fluid (Ingebritsen & Manning 1999, Stober & Bucher 2007).

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Authors and Affiliations

  1. Institut für Geowissenschaften, Universität Freiburg, Albertstr. 23b, 79104, Freiburg, Deutschland

    Ingrid Stober & Prof. Dr. Kurt Bucher

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  1. Ingrid Stober
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  2. Prof. Dr. Kurt Bucher
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Correspondence to Ingrid Stober .

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Stober, I., Bucher, K. (2012). Enhanced-Geothermal-Systems (EGS), Hot-Dry-Rock Systeme (HDR), Deep-Heat-Mining (DHM). In: Geothermie. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24331-8_9

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