Investigation on approaches for little temperature difference heat exchange for the energy storage system with CO2 transcritical thermodynamic cycles
文献类型：期刊论文
| 作者 | Pan, Lisheng1,2 ; Dong, Yuehua1,2,3; Shi, Weixiu4; Zhou, Junwei4; Wei, Xiaolin1,2
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| 刊名 | JOURNAL OF ENERGY STORAGE
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| 出版日期 | 2025-07-15 |
| 卷号 | 124页码:21 |
| 关键词 | Energy storage Multi-stage heat transfer Heat exchange of contact and phase transformation |
| ISSN号 | 2352-152X |
| DOI | 10.1016/j.est.2025.116822 |
| 通讯作者 | Pan, Lisheng(panlisheng@imech.ac.cn) |
| 英文摘要 | The CO2 transcritical thermodynamic cycle energy storage system has the characteristics of green development, flexible application and easy to scale, and is an important energy storage technology scheme to promote the absorption of renewable energy under the background of dual carbon goals. To increase the round-trip efficiency of the system, the core idea of reducing the heat exchange temperature difference was applied. The multi-stage heat transfer method and contact and phase transformation heat transfer method were used at the high and low temperature sides, respectively. Performance evaluations show that multi-stage heat transfer method can significantly improve exergy efficiency and temperature matching degree. When the number of users is 2, the area temperature matching degree increases with the increase of CO2 temperature at the cutting point, indicating that the lower CO2 temperature at the cutting point is more conducive to improving the heat transfer efficiency of the system. The contact and phase transformation heat transfer method can significantly reduce the average temperature difference between the power cycle and CO2 heat pump. Meanwhile, the high latent heat of the energy storage medium can greatly reduce its flow rate, making the system more compact and reducing system costs. |
| WOS关键词 | PUMP WATER-HEATERS ; PERFORMANCE ; INTEGRATION ; MIXTURES |
| 资助项目 | National Key Research and Devel-opment Program of China[2024YFE0212700] ; National Key Research and Devel-opment Program of China[12372237] ; National Natural Science Foundation of China |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:001485795400001 |
| 资助机构 | National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101531]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Pan, Lisheng |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Beijing Inst Remote Sensing Equipment, Beijing 100854, Peoples R China 4.Beijing Univ Civil Engn & Architecture, Sch Environm & Energy Engn, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Lisheng,Dong, Yuehua,Shi, Weixiu,et al. Investigation on approaches for little temperature difference heat exchange for the energy storage system with CO2 transcritical thermodynamic cycles[J]. JOURNAL OF ENERGY STORAGE,2025,124:21. |
| APA | Pan, Lisheng,Dong, Yuehua,Shi, Weixiu,Zhou, Junwei,&Wei, Xiaolin.(2025).Investigation on approaches for little temperature difference heat exchange for the energy storage system with CO2 transcritical thermodynamic cycles.JOURNAL OF ENERGY STORAGE,124,21. |
| MLA | Pan, Lisheng,et al."Investigation on approaches for little temperature difference heat exchange for the energy storage system with CO2 transcritical thermodynamic cycles".JOURNAL OF ENERGY STORAGE 124(2025):21. |
入库方式： OAI收割
来源：力学研究所
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