Evaluating the long-term sustainability of geothermal energy utilization from deep coal mines
文献类型：期刊论文
| 作者 | Huang, Yonghui1,2; Kong, Yanlong3,4; Cheng, Yuanzhi3,4; Zhu, Chuanqing1,2; Zhang, Jixiong5; Wang, Jiyang3,4 |
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2023 |
| 卷号 | 107页码:11 |
| 关键词 | Geothermal energy Deep coal mine Numerical modeling Long -term sustainability Parallel horizontal ground heat exchanger |
| ISSN号 | 0375-6505 |
| DOI | 10.1016/j.geothermics.2022.102584 |
| 英文摘要 | Deep underground mines offer a great potential as low-enthalpy geothermal resource to be adopted in direct regional heating. In this paper, a parallel horizontal ground heat exchangers (pHGHE) system is introduced to utilize the geothermal resource in deep coal mines, however, the sustainability of the system in a long-run performance has not been well addressed in the previous study. This work presented a quantitative evaluation on the long-term sustainability of pHGHE system installed in backfilled stopes of deep coal mines. A novel nu-merical model is applied to characterize the heat transfer occurring between the horizontal pipes and backfill stopes. The proposed model was first verified to an analytical solution to determine the model reliability and accuracy. The validated numerical model was further applied to a typical underground backfilled stope of Anju coal mine in China. The results demonstrated that the maximum sustainable specific heat extraction rate must not exceed 40 W/m to maintain a 50-year exploitation period. A total thermal capacity of 17 GWh could be realized during each extraction cycle under the current conditions, which could provide heating to more than 170,000 m2 of residential building area. Accordingly, sensitivity analysis was performed to identify the key parameters influencing system sustainability. In addition, the effects of groundwater flow on the thermal interaction and long-term sustainability of the pHGHE systems were examined. Groundwater flow can be beneficial to the long-term sustainability of the system. This work confirms the feasibility and sustainability of geothermal resource utilization in backfill stopes of underground coal mines. The insights gained in this study can provide technical guidance for the design of geothermal systems in similar coal mines. |
| WOS关键词 | HEAT-EXCHANGERS ; ABANDONED MINES ; SYSTEM ; RECOVERY ; WATER ; DISCHARGES ; EXTRACTION ; EFFICIENCY ; BACKFILL ; PROJECT |
| 资助项目 | National Key R & D Program of China ; National Natural Science Foundation of China ; [2019YFB1504101] ; [41902311] |
| WOS研究方向 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000886045500001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107669]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Huang, Yonghui; Kong, Yanlong |
| 作者单位 | 1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China 2.China Univ Petr, Coll Geosci, Beijing 102249, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Yonghui,Kong, Yanlong,Cheng, Yuanzhi,et al. Evaluating the long-term sustainability of geothermal energy utilization from deep coal mines[J]. GEOTHERMICS,2023,107:11. |
| APA | Huang, Yonghui,Kong, Yanlong,Cheng, Yuanzhi,Zhu, Chuanqing,Zhang, Jixiong,&Wang, Jiyang.(2023).Evaluating the long-term sustainability of geothermal energy utilization from deep coal mines.GEOTHERMICS,107,11. |
| MLA | Huang, Yonghui,et al."Evaluating the long-term sustainability of geothermal energy utilization from deep coal mines".GEOTHERMICS 107(2023):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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