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Numerical Modeling of Geothermal Use of Mine Water: Challenges and Examples

Renz, A. and Rühaak, W. and Schätzl, P. and Diersch, H.-J. G. (2009):
Numerical Modeling of Geothermal Use of Mine Water: Challenges and Examples.
In: Mine Water and the Environment, pp. 2-14, 28, (1), [Article]

Abstract

Geothermal energy, including the geothermal use of mine water, is increasingly important, due to ecological and economical reasons. Numerical flow and heat transport models can help to estimate the efficiency of such facilities. In addition, it is possible to test different configurations. However, the modeling of mine voids is challenging because it is necessary to simultaneously solve the heat transport in the surrounding porous medium and within the mine workings. Different modeling approaches are demonstrated, such as 2-D cross-sections, 2-D models with 1-D elements for the mine workings, and 3-D models. It is shown that numerical simulations can provide sufficient validity for specific modeling goals. However, none of the currently feasible modeling strategies can be seen as a perfect and fully physical solution. Suggestions are given on how to use the different approaches.

Item Type: Article
Erschienen: 2009
Creators: Renz, A. and Rühaak, W. and Schätzl, P. and Diersch, H.-J. G.
Title: Numerical Modeling of Geothermal Use of Mine Water: Challenges and Examples
Language: English
Abstract:

Geothermal energy, including the geothermal use of mine water, is increasingly important, due to ecological and economical reasons. Numerical flow and heat transport models can help to estimate the efficiency of such facilities. In addition, it is possible to test different configurations. However, the modeling of mine voids is challenging because it is necessary to simultaneously solve the heat transport in the surrounding porous medium and within the mine workings. Different modeling approaches are demonstrated, such as 2-D cross-sections, 2-D models with 1-D elements for the mine workings, and 3-D models. It is shown that numerical simulations can provide sufficient validity for specific modeling goals. However, none of the currently feasible modeling strategies can be seen as a perfect and fully physical solution. Suggestions are given on how to use the different approaches.

Journal or Publication Title: Mine Water and the Environment
Volume: 28
Number: 1
Uncontrolled Keywords: Engineering
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geothermal Science and Technology
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences
Date Deposited: 06 Nov 2014 13:26
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