Performance analysis of shallow depth hydrothermal enhanced geothermal system for electricity generation

doi:10.1016/j.geothermics.2020.101847

GIEC OpenIR

	Performance analysis of shallow depth hydrothermal enhanced geothermal system for electricity generation
	Bu, Xianbiao1,2,3 ; Jiang, Kunqing 1,4; He, Yujiang 5,6
	2020-07-01
发表期刊	GEOTHERMICS
ISSN	0375-6505
卷号	86 页码:6
通讯作者	He, Yujiang(hyj8620@163.com)
摘要	There is a large mismatch between potential estimates and developed geothermal resources in China due to high cost and risk for enhanced geothermal system (EGS) and scattered resources and low volume flow rate for hydrothermal system. Here we propose a shallow depth enhanced geothermal system (SDEGS), which can be implemented by fracturing the shallow depth hydrothermal system to create rich fractures in order to enhance permeability and volume flow rate. The mathematical models describing the continuity, momentum and energy equations in the artificial reservoir and surrounding rock, as well as the thermoelectric conversion equations of Organic Rankine cycle (ORC) are developed. From the simulation results we find that the artificial reservoir of SDEGS can provide stable heat output and outlet water temperature of respectively 59499.97 kW and 165 degrees Cfor almost 23 years. For ORC for generating electricity, the net work output and thermal efficiency are respectively 8053.6 kW and 13.54 %. SDEGS can reduce the hydraulic fracturing risk and cost due to existing rich natural fractures in hydrothermal system, thus broadening the application ranges of EGS.
关键词	Geothermal electricity generation Organic rankine cycle Hydrothermal enhanced geothermal system Shallow depth hydrothermal system Enhanced geothermal system
DOI	10.1016/j.geothermics.2020.101847
关键词[WOS]	HEAT EXTRACTION PERFORMANCE ; ABANDONED OIL-WELLS ; HOT DRY ROCK ; NUMERICAL-SIMULATION ; POWER-GENERATION ; SINGLE-WELL ; ENERGY ; EGS ; RESERVOIR ; FIELD
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:000534152600029
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：8[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/344007/27123
专题	中国科学院广州能源研究所
通讯作者	He, Yujiang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China 6.Minist Nat Resources, Technol Innovat Ctr Geothermal & Hot Dry Rock Exp, Shijiazhuang 050061, Hebei, 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	Bu, Xianbiao,Jiang, Kunqing,He, Yujiang. Performance analysis of shallow depth hydrothermal enhanced geothermal system for electricity generation[J]. GEOTHERMICS,2020,86:6.
APA	Bu, Xianbiao,Jiang, Kunqing,&He, Yujiang.(2020).Performance analysis of shallow depth hydrothermal enhanced geothermal system for electricity generation.GEOTHERMICS,86,6.
MLA	Bu, Xianbiao,et al."Performance analysis of shallow depth hydrothermal enhanced geothermal system for electricity generation".GEOTHERMICS 86(2020):6.