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Geothermal Energy Science An open-access journal
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Stored-heat assessment methods for geothermal fields are reviewed against observed field performance. For the method originated by the USGS, and used in the Australian Geothermal Reporting Code, the average recovery factor is shown to be 10%, with an error of ±70%. For enhanced geothermal systems (EGS) the recovery factor in experiments to date has been much less, a few percent at best.
Articles | Volume 2, issue 1
https://doi.org/10.5194/gtes-2-49-2014
https://doi.org/10.5194/gtes-2-49-2014
17 Dec 2014
 | 17 Dec 2014

Stored-heat assessments: a review in the light of field experience

M. A. Grant

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Short summary
Stored-heat assessment methods for geothermal fields are reviewed against observed field performance. For the method originated by the USGS, and used in the Australian Geothermal Reporting Code, the average recovery factor is shown to be 10%, with an error of ±70%. For enhanced geothermal systems (EGS) the recovery factor in experiments to date has been much less, a few percent at best.
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