Development status and prospect of underground thermal energy storage technology  

作　　者：Ying-nan Zhang Yan-guang Liu Kai Bian Guo-qiang Zhou Xin Wang Mei-hua Wei 

机构地区：[1]School of Earth science and Engineering,Hebei University of Engineering,Handan 056038,Hebei Province,China [2]Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang 050061,China [3]Technology Innovation Center of Geothermal&Hot Dry Rock Exploration and Development,Ministry of Natural Resources,Shijiazhuang 050061,China [4]Shanxi Key Laboratory for Exploration and Exploitation of Geothermal Resources,Taiyuan 030024,China [5]Shanxi Geological Engineering Exploration Institute,Taiyuan 030024,China

出　　处：《Journal of Groundwater Science and Engineering》2024年第1期92-108,共17页地下水科学与工程（英文版）

基　　金：supported by the National Nature Science Foundation of China under grant No.42272350;the Foundation of Shanxi Key Laboratory for Exploration and Exploitation of Geothermal Resources under grant No.SX202202.

摘　　要：Underground Thermal Energy Storage(UTES)store unstable and non-continuous energy underground,releasing stable heat energy on demand.This effectively improve energy utilization and optimize energy allocation.As UTES technology advances,accommodating greater depth,higher temperature and multi-energy complementarity,new research challenges emerge.This paper comprehensively provides a systematic summary of the current research status of UTES.It categorized different types of UTES systems,analyzes the applicability of key technologies of UTES,and evaluate their economic and environmental benefits.Moreover,this paper identifies existing issues with UTES,such as injection blockage,wellbore scaling and corrosion,seepage and heat transfer in cracks,etc.It suggests deepening the research on blockage formation mechanism and plugging prevention technology,improving the study of anticorrosive materials and water treatment technology,and enhancing the investigation of reservoir fracture network characterization technology and seepage heat transfer.These recommendations serve as valuable references for promoting the high-quality development of UTES.

关 键 词：Aquifer thermal energy storage Borehole thermal energy storage Cavern thermal energy storage Thermal energy storage technology Benefit evaluation 

分 类 号：TK521[动力工程及工程热物理—热能工程]