Simulation analysis of a single well geothermal system with open-loop structure

doi:10.1016/j.geothermics.2021.102338

GIEC OpenIR

	Simulation analysis of a single well geothermal system with open-loop structure
	Jiang, Kunqing 1,2; Bu, Xianbiao2
	2022-03-01
发表期刊	GEOTHERMICS
ISSN	0375-6505
卷号	100 页码:15
通讯作者	Bu, Xianbiao(buxb@ms.giec.ac.cn)
摘要	The relatively small heat exchange power limits the promotion and application of deep borehole heat exchanger (DBHE) with the closed loop due to the main heat transfer pattern of heat conduction through rocks with poor thermal conductivity coefficient. Furthermore, geothermal water is prohibited to extract in some places even with 100% reinjection. To solve the above problems, here a novel single-well enhanced geothermal system (SEGS) is studied with an open-loop structure having the convection heat exchange process. The heat transfer performance, mechanism and main influential factors of SEGS are studied. Result shows that the heat transfer performance of SEGS is greatly improved compared to DBHE, and the average heat transfer power of SEGS reaches 1603.6 kW and 1204.6 kW respectively with different operation modes. In addition, the study also finds that the convective heat transfer process inside the geothermal reservoir is simultaneously affected by the driving effect of the fluid in the screen and the buoyancy effect. Further, the above two effects act in the same direction when the annulus is used as the inlet, while they act in the opposite direction when the inner tube is used as the inlet.
关键词	Deep borehole heat exchanger Single-well enhanced geothermal system Geothermal reservoir Buoyancy effect
DOI	10.1016/j.geothermics.2021.102338
关键词[WOS]	HEAT EXTRACTION PERFORMANCE ; ABANDONED OIL ; ENERGY ; CO2 ; HETEROGENEITY ; EXPLOITATION ; WETTABILITY ; CONVECTION ; EFFICIENCY ; IMPACT
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41972314]
WOS研究方向	Energy & Fuels ; Geology
项目资助者	National Natural Science Foundation of China
WOS类目	Energy & Fuels ; Geosciences, Multidisciplinary
WOS记录号	WOS:000781356800002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36165
专题	中国科学院广州能源研究所
通讯作者	Bu, Xianbiao
作者单位	1.Univ Sci & Technol China, Sch Energy Sci & Engn, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Jiang, Kunqing,Bu, Xianbiao. Simulation analysis of a single well geothermal system with open-loop structure[J]. GEOTHERMICS,2022,100:15.
APA	Jiang, Kunqing,&Bu, Xianbiao.(2022).Simulation analysis of a single well geothermal system with open-loop structure.GEOTHERMICS,100,15.
MLA	Jiang, Kunqing,et al."Simulation analysis of a single well geothermal system with open-loop structure".GEOTHERMICS 100(2022):15.