An enhanced super-long gravity heat pipe geothermal system: Conceptual design and numerical study
文献类型：期刊论文
| 作者 | Li, Zhibin1,2,3,4; Huang, Wenbo1,3,4; Chen, Juanwen1,3,4; Cen, Jiwen1,3,4; Cao, Wenjiong1,3,4; Li, Feng1,2,3,4; Jiang, Fangming1,3,4 |
| 刊名 | ENERGY
 |
| 出版日期 | 2023-03-15 |
| 卷号 | 267页码:15 |
| 关键词 | Deep geothermal energy Super-long geothermal heat pipe system Heat transfer enhanced region Phase change composite |
| ISSN号 | 0360-5442 |
| DOI | 10.1016/j.energy.2022.126524 |
| 通讯作者 | Chen, Juanwen(chenjw@ms.giec.ac.cn) ; Jiang, Fangming(jiangfm@ms.giec.ac.cn) |
| 英文摘要 | Recently, it was reported a novel method of deep geothermal energy exploitation by using the super-long gravity heat pipe (SLGHP) in a single-well geothermal system. However, the low heat transfer rate from the geothermal formation outside the heat pipe is one main factor limiting the heat extraction rate of the SLGHP system. In this respect, the concept of a novel enhanced super-long heat pipe system (ESLHPS) is proposed, which encompasses a super-long gravity heat pipe and a heat transfer enhanced region. The heat transfer enhanced region, built around the evaporation section of the heat pipe, features near-well fracture reservoir filled with high thermal conductivity phase change composite. The phase change composite remains as a semiliquid mixture during operation, eliminating the thermal contact resistance between the heat pipe and the reservoir. To evaluate the thermal performance of the proposed system, it is employed a numerical model, and the key parameters including those of the heat transfer enhanced region are carefully analyzed. In addition, an insulation layer is set around the heat pipe to make a specific adiabatic section. It is found that the heat transfer enhanced region can significantly improve the thermal performance of the SLGHP system. The overall thermal performance of ESLHPS is found to be dependent on the thermal conductivity, length and radius of the heat transfer enhanced region. The insulation layer can effectively reduce the heat loss of ESLHPS, and the thermal insulation shows the best performance when its length just equals the length of heat pipe minus the optimum length of the heat transfer enhanced region. In addition, the design procedure for the ESLHPS is also proposed, and it leads to a realistic strategy for the design of single-well SLGHP geothermal systems. The results obtained in this study under idealized conditions offer guidance towards the optimization of the system design. |
| WOS关键词 | PHASE-CHANGE MATERIALS ; THERMAL-CONDUCTIVITY ; EXTRACTION ; PERFORMANCE ; EXCHANGERS ; EXPLOITATION ; GENERATION ; MANAGEMENT ; MODEL |
| 资助项目 | National Key Research and Development Project of China[2021YFB1507300] ; National Key Research and Development Project of China[2021YFB1507302] ; National Key Research and Development Project of China[2018YFB1501804] ; National Key Research and Development Project of China[2019YFB1504104] ; Chinese Academy of Sciences Strategic -A Pilot Project[XDA21060700] ; Chinese Academy of Sciences Key Laboratory of Renewable Energy[E0290302] ; Guangzhou Science and Technology Plan Project[202102020245] ; Jiangyin Science and Technology Innovation Special Fund[JY0604A021015210001PB] ; Jiangsu Provincial Carbon Peak Carbon Neutralization Technology Innovation Special Fund[BE2022012] ; Hebei ProvincialDepartment of Science and Technology[19274102D] ; Hebei ProvincialDepartment of Science and Technology[20374102D] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000916415300001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key Research and Development Project of China ; Chinese Academy of Sciences Strategic -A Pilot Project ; Chinese Academy of Sciences Key Laboratory of Renewable Energy ; Guangzhou Science and Technology Plan Project ; Jiangyin Science and Technology Innovation Special Fund ; Jiangsu Provincial Carbon Peak Carbon Neutralization Technology Innovation Special Fund ; Hebei ProvincialDepartment of Science and Technology |
| 源URL | [http://ir.giec.ac.cn/handle/344007/38426]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Chen, Juanwen; Jiang, Fangming |
| 作者单位 | 1.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst, Guangzhou 510640, Guangdong, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhibin,Huang, Wenbo,Chen, Juanwen,et al. An enhanced super-long gravity heat pipe geothermal system: Conceptual design and numerical study[J]. ENERGY,2023,267:15. |
| APA | Li, Zhibin.,Huang, Wenbo.,Chen, Juanwen.,Cen, Jiwen.,Cao, Wenjiong.,...&Jiang, Fangming.(2023).An enhanced super-long gravity heat pipe geothermal system: Conceptual design and numerical study.ENERGY,267,15. |
| MLA | Li, Zhibin,et al."An enhanced super-long gravity heat pipe geothermal system: Conceptual design and numerical study".ENERGY 267(2023):15. |
入库方式： OAI收割
来源：广州能源研究所
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