Effect of the dynamic humid environment in salt caverns on their performance of compressed air energy storage: A modeling study of thermo-moisture-fluid dynamics
文献类型：期刊论文
| 作者 | Zeng, Zhen1,3,4; Ma, Hongling1,3,4; Yang, Chunhe1,3,4; Liao, Youqiang1,3,4; Wang, Xuan1,3,4; Cai, Rui1,3,4; Fang, Jiangyu2 |
| 刊名 | APPLIED ENERGY
 |
| 出版日期 | 2025 |
| 卷号 | 377页码:15 |
| 关键词 | Salt cavern Compressed air energy storage Energy storage Relative humidity Thermo-moisture-fluid coupling |
| ISSN号 | 0306-2619 |
| DOI | 10.1016/j.apenergy.2024.124403 |
| 英文摘要 | The performance of a salt cavern compressed air energy storage (CAES) system is affected by the state of air in the cavern. Scholars have been focusing on the fluctuation of air temperature during CAES operation. However, few noticed the simultaneous humidity fluctuations. In this work, a thermo-moisture-fluid dynamics model (TMFD model) was proposed for simulating the dynamic wet environment in CAES salt caverns to estimate its impact on the air state and the system's energy storage performance. In addition to the thermo-moisture coupling, air injection and withdrawal, the water phase transitions, including condensation, evaporation, absorption, and deliquescence, were also considered. The model was applied to the cavern NK1 of the Huntorf plant, with a volume of 140,000 m(3). The simulation agrees quite well with the measured temperature data, and it revealed the coupling effect between the humidity and the temperature. During charging, the temperature increases while the relative humidity (RH) decreases, activating the bottom brine to evaporate. Conversely, the temperature drops rapidly in the discharging, supersaturating the water vapor, triggering absorption, condensation, and deliquescence. The reaction heat of these phase transitions raises the salt cavern temperature level by about 0.61 degrees C while moderating the temperature fluctuations during air injection and withdrawal. These two effects mutually result in the unchanged storage capacity. The latent heat released from the liquefaction during discharging slightly increases the energy density of the withdrawn air and the system's round-trip efficiency. After a cycle, 646.11 kg of water vapor was liquefied, mainly at the end of the withdrawal, and retained in the salt caverns. Its accumulation reduces the cavern's available volume and energy storage capacity by 5.01 % and 6.23 %, respectively, within 30 a. Reducing the inlet humidity can effectively solve this problem. This work reveals the cyclic changes in CAES salt caverns and provides a more accurate estimation of their performance as a part of an energy storage system. The findings are potentially employed to optimize the CAES operation strategies, maximizing the storage capacity. |
| 资助项目 | Major Research Development Program of Hubei province[2022BAA093] ; Major Research Development Program of Hubei province[2023ACG01004] ; Major Research Development Program of Jiangxi province[2023ACG01004] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME023008] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001316859000001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42550]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zeng, Zhen |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 2.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Zhen,Ma, Hongling,Yang, Chunhe,et al. Effect of the dynamic humid environment in salt caverns on their performance of compressed air energy storage: A modeling study of thermo-moisture-fluid dynamics[J]. APPLIED ENERGY,2025,377:15. |
| APA | Zeng, Zhen.,Ma, Hongling.,Yang, Chunhe.,Liao, Youqiang.,Wang, Xuan.,...&Fang, Jiangyu.(2025).Effect of the dynamic humid environment in salt caverns on their performance of compressed air energy storage: A modeling study of thermo-moisture-fluid dynamics.APPLIED ENERGY,377,15. |
| MLA | Zeng, Zhen,et al."Effect of the dynamic humid environment in salt caverns on their performance of compressed air energy storage: A modeling study of thermo-moisture-fluid dynamics".APPLIED ENERGY 377(2025):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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