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Heat extraction from hot dry rock by super-long gravity heat pipe: Selection of working fluid

文献类型：期刊论文

作者Chen, Juanwen2; Huang, Wenbo2; Cen, Jiwen2; Cao, Wenjiong2; Li, Zhibin1,2; Li, Feng1,2; Jiang, Fangming2
刊名ENERGY
出版日期2022-09-15
卷号255页码:15
关键词Hot dry rock Deep-earth geothermal heat extraction Super-long gravity heat pipe Working fluid
ISSN号0360-5442
DOI10.1016/j.energy.2022.124531
通讯作者Huang, Wenbo(huangwb@ms.giec.ac.cn) ; Jiang, Fangming(jiangfm@ms.giec.ac.cn)
英文摘要The novel technical scheme of extracting the deep-earth hot dry rock heat by a super-long gravity heat pipe (SLGHP) system in a single-well has aroused widespread interest in the geothermal energy research and engineering community. Due to the unique characteristic of the SLGHP, i.e. the extremely large length-to-diameter ratio, the effect of working fluid on its thermal performance is different from that for the normal heat pipes, thus requiring careful evaluation in the working fluid selection. However, there is no unified evaluation standard, and consequently, it is not available an efficient preferred route for the working fluid selection. The present work proposes a selection criterion to guide the fast screening of the potential candidates for SLGHP working fluid. For this criterion, the temperature gradient of the working fluid along the SLGHP in operation is adopted as an index to evaluate the effect of working fluid on the SLGHP thermal performance. The thermal performance of SLGHP using several typical working fluids is also evaluated via numerical simulation. Comparison between the numerical predictions and the fast-screening evaluations presents good consistency, indicating the validity of the proposed working fluid selection criterion. Both approaches reveal that ammonia would be preferable to water and methanol as the SLGHP working fluid for low source (hot dry rock) temperature and small diameter heat pipe; while water would be the best choice when the source temperature is high and the heat pipe has a large diameter. This selection criterion can act as a convenient and reliable tool for the decision process on the best-suited working fluid for an SLGHP tailored for actual geothermal energy exploitation use. (C) 2022 Elsevier Ltd. All rights reserved.
WOS关键词THERMAL BREAKTHROUGH ; SIMULATION ; SYSTEM
资助项目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 Provincial Department of Science and Technology[19274102D] ; Hebei Provincial Department of Science and Technology[20374102D]
WOS研究方向Thermodynamics ; Energy & Fuels
语种英语
WOS记录号WOS:000832946500007
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 Provincial Department of Science and Technology
源URL[http://ir.giec.ac.cn/handle/344007/37105]  
专题中国科学院广州能源研究所
通讯作者Huang, Wenbo; Jiang, Fangming
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.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
推荐引用方式
GB/T 7714		 Chen, Juanwen,Huang, Wenbo,Cen, Jiwen,et al. Heat extraction from hot dry rock by super-long gravity heat pipe: Selection of working fluid[J]. ENERGY,2022,255:15.
APA Chen, Juanwen.,Huang, Wenbo.,Cen, Jiwen.,Cao, Wenjiong.,Li, Zhibin.,...&Jiang, Fangming.(2022).Heat extraction from hot dry rock by super-long gravity heat pipe: Selection of working fluid.ENERGY,255,15.
MLA Chen, Juanwen,et al."Heat extraction from hot dry rock by super-long gravity heat pipe: Selection of working fluid".ENERGY 255(2022):15.

入库方式： OAI收割

来源：广州能源研究所

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