Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Heat extraction from hot dry rock by super-long gravity heat pipe: A field test | |
Huang, Wenbo1; Cen, Jiwen1 ; Chen, Juanwen1; Cao, Wenjiong1; Li, Zhibin1,2; Li, Feng1,2; Jiang, Fangming1
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| 2022-05-15 | |
| Source Publication | ENERGY
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| ISSN | 0360-5442 |
| Volume | 247Pages:12 |
| Corresponding Author | Chen, Juanwen(chenjw@ms.giec.ac.cn) ; Jiang, Fangming(fm_jiang2000@yahoo.com) |
| Abstract | Recent theoretical studies dealing with the novel scheme for earth-deep hot dry rock geothermal energy extraction based on the use of a super-long heat pipe indicate its superior technical viability. The present work reports on a field test using a 3000-m heat pipe to extract hot dry rock geothermal energy conducted with the aim of demonstrating its practical feasibility. The in-house developed heat pipe uses deionized water as working fluid and produces steam with a maximum temperature of similar to 90 degrees C, when the average underground formation temperature around the subsurface heat pipe is 95.6 degrees C. During the 30day continuous heat mining process, the heat extraction rate achieved an average value of 190 kW with no obvious downward trend. After one month of continuous heat production, a one-week heat recovery can restore the system temperature to just slightly lower than the initial value. The thermal response of the system to different condensing temperatures was also tested. The results show that the heat extraction rate can be increased by decreasing the condensing temperature, but this improvement is insignificant when the condensing temperature is 55 degrees C or lower. Furthermore, the experimental results show overall good agreement with the model predictions, which indicates that the heat pipe is performing close to the desired operating conditions considered in the simulation model, in particular: no liquid accumulation, no local dry-out, and no vapor-liquid entrainment. This performance is a major departure from that of the typical heat pipes, and it makes the super-long gravity heat pipe a leading technological candidate for earth-deep geothermal heat extraction. (C) 2022 Elsevier Ltd. All rights reserved. |
| Keyword | Hot dry rock Geothermal energy Super long heat pipe Heat extraction Field test |
| DOI | 10.1016/j.energy.2022.123492 |
| WOS Keyword | GEOTHERMAL-ENERGY ; PERFORMANCE ; SYSTEM ; WELLS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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] ; Hebei Provincial Department of Science and Technology[19274102D] ; Hebei Provincial Department of Science and Technology[20374102D] |
| WOS Research Area | Thermodynamics ; Energy & Fuels |
| Funding Organization | Chinese Academy of Sciences Strategic-A Pilot Project ; Chinese Academy of Sciences Key Laboratory of Renewable Energy ; Guangzhou Science and Technology Plan Project ; Hebei Provincial Department of Science and Technology |
| WOS Subject | Thermodynamics ; Energy & Fuels |
| WOS ID | WOS:000819868800008 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36959 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Chen, Juanwen; Jiang, Fangming |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst,CAS Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Huang, Wenbo,Cen, Jiwen,Chen, Juanwen,et al. Heat extraction from hot dry rock by super-long gravity heat pipe: A field test[J]. ENERGY,2022,247:12. |
| APA | Huang, Wenbo.,Cen, Jiwen.,Chen, Juanwen.,Cao, Wenjiong.,Li, Zhibin.,...&Jiang, Fangming.(2022).Heat extraction from hot dry rock by super-long gravity heat pipe: A field test.ENERGY,247,12. |
| MLA | Huang, Wenbo,et al."Heat extraction from hot dry rock by super-long gravity heat pipe: A field test".ENERGY 247(2022):12. |
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