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Natural and Artificial Methods of Heat Resource Regeneration in Underground Thermal Energy Storages with Borehole Heat Exchangers
* 1 , 2
1  AGH University of Science and Technology, Drilling, Oil and Gas Faculty, al. Mickiewicza 30, 30-059 Cracow, Poland
2  Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Oshava, Ontario, L1H 7K4 Canada

Published: 03 November 2014 by MDPI in The 4th World Sustainability Forum session Energy Sustainability
Abstract: The concept of borehole heat exchanger (BHE) field exploitation is described, along with problems with the sustainibility of heat resources in rock masses. A BHE field sometimes has problems with the stability of the heat carrier temperaturę during long-term exploitation. The main reason for this is an insufficient heat stream, with which to transfer heat by conduction in rock. Based on experiences at the Geoenergetics Laboratory (Drilling, Oil and Gas Faculty, AGH University of Science and Technology), possibilities for the regeneration of heat in rock masses are described.
Keywords: Borehole heat exchangers; geoenergetics; heat pumps; underground thermal energy storages