A novel single-well geothermal system for hot dry rock geothermal energy exploitation

doi:10.1016/j.energy.2018.08.666

GIEC OpenIR

	A novel single-well geothermal system for hot dry rock geothermal energy exploitation
	Huang, Wenbo; Cao, Wenjiong; Jiang, Fangming
	2018-11-01
发表期刊	ENERGY
ISSN	0360-5442
卷号	162 页码:630-644
通讯作者	Jiang, Fangming(fm_jiang2000@yahoo.com)
摘要	Existing hot dry rock geothermal projects are commonly confronted with some technical issues, such as corrosion and scaling, and water loss. To resolve these issues, the present work proposes a novel system for mining hot dry rock geothermal energy, in which a reservoir is combined with a heat pipe system. The new system encompasses a heat pipe placed in a single-well to extract hot dry rock geothermal energy, while an artificial reservoir is built around the main endothermic region of the well, which is permeable and saturated with carbon dioxide (CO2). This wellbore structure design may stimulate a stronger natural convection in the reservoir, resulting in a higher thermal power production. To evaluate the proposed system, an extensive numerical investigation was conducted. The comparison of the proposed system with the conventional downhole heat exchanger (DHE) system in terms of heat extraction performance indicates clear superiority of the proposed system primarily due to the associated thermosyphon effect of CO2 fluid in the reservoir. To better understand how operating and design variables affect the heat extraction performance of the system, a detailed sensitivity analysis was conducted taking into consideration a wide range of possible configurations and working conditions. The eventually obtained knowledge will guide the design of the system in practice. (C) 2018 Elsevier Ltd. All rights reserved.
关键词	Hot dry rock Enhanced geothermal system Supercritical CO2 Earth-deep geothermal energy Downhole heat exchanger Heat pipe
DOI	10.1016/j.energy.2018.08.666
关键词[WOS]	3-DIMENSIONAL TRANSIENT MODEL ; HEAT EXTRACTION PERFORMANCE ; RENEWABLE ENERGY ; ABANDONED OIL ; DEEP BOREHOLE ; PUMP SYSTEM ; GAS-WELLS ; EXCHANGER ; EGS ; FLUID
收录类别	SCI
语种	英语
资助项目	China National Science Foundation ; Guangdong-Province Joint Project[U1401232] ; Key Scientific Development Project of Guangdong Province[2014A030308001] ; Guangdong Key Laboratory of New and Renewable Energy Research and Development Foundation[Y709jf1001] ; China National Science Foundation[51406213]
WOS研究方向	Thermodynamics ; Energy & Fuels
项目资助者	China National Science Foundation ; Guangdong-Province Joint Project ; Key Scientific Development Project of Guangdong Province ; Guangdong Key Laboratory of New and Renewable Energy Research and Development Foundation ; China National Science Foundation
WOS类目	Thermodynamics ; Energy & Fuels
WOS记录号	WOS:000447576500051
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：56[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/344007/24236
专题	中国科学院广州能源研究所
通讯作者	Jiang, Fangming
作者单位	Chinese Acad Sci, Guangdong Key Lab New & Renewable Energy Res & De, CAS Key Lab Renewable Energy, Lab Adv Energy Syst,Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Huang, Wenbo,Cao, Wenjiong,Jiang, Fangming. A novel single-well geothermal system for hot dry rock geothermal energy exploitation[J]. ENERGY,2018,162:630-644.
APA	Huang, Wenbo,Cao, Wenjiong,&Jiang, Fangming.(2018).A novel single-well geothermal system for hot dry rock geothermal energy exploitation.ENERGY,162,630-644.
MLA	Huang, Wenbo,et al."A novel single-well geothermal system for hot dry rock geothermal energy exploitation".ENERGY 162(2018):630-644.