A numerical study of EGS heat extraction process based on a thermal non-equilibrium model for heat transfer in subsurface porous heat reservoir
文献类型：期刊论文
| 作者 | Chen, Jiliang; Jiang, Fangming
|
| 刊名 | heat and mass transfer
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 52期号:2页码:255-267 |
| 英文摘要 | with a previously developed numerical model, we perform a detailed study of the heat extraction process in enhanced or engineered geothermal system (egs). this model takes the egs subsurface heat reservoir as an equivalent porous medium while it considers local thermal non-equilibrium between the rock matrix and the fluid flowing in the fractured rock mass. the application of local thermal non-equilibrium model highlights the temperature-difference heat exchange process occurring in egs reservoirs, enabling a better understanding of the involved heat extraction process. the simulation results unravel the mechanism of preferential flow or short-circuit flow forming in homogeneously fractured reservoirs of different permeability values. egs performance, e.g. production temperature and lifetime, is found to be tightly related to the flow pattern in the reservoir. thermal compensation from rocks surrounding the reservoir contributes little heat to the heat transmission fluid if the operation time of an egs is shorter than 15 years. we find as well the local thermal equilibrium model generally overestimates egs performance and for an egs with better heat exchange conditions in the heat reservoir, the heat extraction process acts more like the local thermal equilibrium process. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | thermodynamics ; mechanics |
| 研究领域[WOS] | thermodynamics ; mechanics |
| 关键词[WOS] | enhanced geothermal systems ; 3-dimensional transient model ; rock ; transport |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369522100009 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/11014]  |
| 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, Lab Adv Energy Syst, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jiliang,Jiang, Fangming. A numerical study of EGS heat extraction process based on a thermal non-equilibrium model for heat transfer in subsurface porous heat reservoir[J]. heat and mass transfer,2016,52(2):255-267. |
| APA | Chen, Jiliang,&Jiang, Fangming.(2016).A numerical study of EGS heat extraction process based on a thermal non-equilibrium model for heat transfer in subsurface porous heat reservoir.heat and mass transfer,52(2),255-267. |
| MLA | Chen, Jiliang,et al."A numerical study of EGS heat extraction process based on a thermal non-equilibrium model for heat transfer in subsurface porous heat reservoir".heat and mass transfer 52.2(2016):255-267. |
入库方式： OAI收割
来源：广州能源研究所
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