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A novel three-dimensional transient model for subsurface heat exchange in enhanced geothermal systems
Jiang, Fangming; Luo, Liang; Chen, Jiliang
2013-02-01
发表期刊INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
卷号41页码:57-62
摘要Understanding the subsurface heat exchange process in enhanced geothermal systems (EGS) is crucial to the efficiency of heat extraction and the sustainable utilization of geothermal reservoir. In the present work we develop a novel three-dimensional transient model for the study of the subsurface heat exchange process in EGS. The novelty of this model is embodied by a couple of salient features. First, the geometry of interest physically consists of multiple domains: open channels for injection and production wells, the artificial heat reservoir, and the rock enclosing the heat reservoir, while computationally we treat it as a single-domain of multiple sub-regions associated with different sets of characteristic properties (porosity and permeability etc.). This circumvents typical difficulties about matching boundary conditions between sub-domains in traditional multi-domain approaches and facilitates numerical implementation and simulation of the complete subsurface heat exchange process. Second, the heat reservoir is treated as an equivalent porous medium of a single porosity, while we consider thermal non-equilibrium between solid and fluid components and introduce two sets of heat transfer equations to describe the heat advection and conduction for fluid in rock apertures and the heat conduction in rock matrix, respectively, thus enabling the simulation and analysis of convective heat exchange between rock matrix and fluid flowing in the apertures. Case study with respect to an imaginary EGS demonstrates the validity and capability of the developed model. (C) 2012 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Enhanced (Or Engineered) Geothermal Systems Numerical Model Hot Dry Rock Technology Geothermal Energy Porous Medium
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.icheatmasstransfer.2012.11.003
研究领域[WOS]Thermodynamics ; Mechanics
关键词[WOS]FORCED-CONVECTION ; POROUS-MEDIA ; FLUID
收录类别SCI
语种英语
WOS类目Thermodynamics ; Mechanics
WOS记录号WOS:000315066200009
引用统计
被引频次:36[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/344007/10080
专题中国科学院广州能源研究所
作者单位Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy & Gas Hydrate, Lab Adv Energy Syst, Guangzhou 510640, Guangdong, Peoples R China
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Jiang, Fangming,Luo, Liang,Chen, Jiliang. A novel three-dimensional transient model for subsurface heat exchange in enhanced geothermal systems[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,2013,41:57-62.
APA Jiang, Fangming,Luo, Liang,&Chen, Jiliang.(2013).A novel three-dimensional transient model for subsurface heat exchange in enhanced geothermal systems.INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,41,57-62.
MLA Jiang, Fangming,et al."A novel three-dimensional transient model for subsurface heat exchange in enhanced geothermal systems".INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER 41(2013):57-62.
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