文献类型：期刊文献

英文题名：Effect of waste heat recovery pathways on the thermo-economic performance of a solar-augmented CCES system: A mechanism study

作者：Zhang, Dong Jia, Jingyi Su, Xinyue Li, Yueyi Deng, Qingdong Ding, Yong An, Zhoujian

第一作者：Zhang, Dong

通信作者：Zhang, D[1]

机构：[1]Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;[2]Anhui East China Optoelect Technol Res Inst Co LTD, Wuhu 241000, Peoples R China;[3]Guizhou Inst Technol, Sch Aeronaut & Astronaut Engn, Guiyang, Peoples R China

第一机构：Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China

通信机构：corresponding author), Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China.

年份：2026

卷号：360

外文期刊名：ENERGY

收录：;EI(收录号：20262621018938);WOS:【SCI-EXPANDED(收录号:WOS:001813849100001)】；

基金：This work was supported by Guizhou Provincial Major Scientific and Technological Program (XKBF (2025) 031) , Guizhou Science and Technology Innovation Leading Talent Workstation (KXJZ (2025) 024) , Industrial Support Plan Project of Gansu Provincial Education Department (2025CYZC-034) , Anhui Postdoctoral Scientific Research Program Foundation (2025C1138) and Red Willow Outstanding Youth Project of Lanzhou University of Technology.

语种：英文

外文关键词：Compressed carbon dioxide energy storage; Compression heat recovery; Waste heat recovery; Renewable energy integration; Solar thermal augmentation

摘要：Compared with air, carbon dioxide exhibits superior physical properties. These superior properties render carbon dioxide a highly promising medium for large-scale Compressed Carbon Dioxide Energy Storage (CCES) applications. However, conventional CCES systems are limited by low power output and cycle efficiency, primarily due to the low temperature at the expander inlet. Although conventional fossil fuel combustion can be used to raise the inlet temperature, this approach increases system complexity, economic costs, and environmental impact. To address these limitations, this study proposes a transcritical compressed CO2 energy storage (TC-CCES) system integrated with renewable energy and augmented by solar heating. Two configurations based on distinct heat recovery methods were designed and analyzed: a solar-augmented TC-CCES system with compression heat recovery (System 2) and a solar-augmented TC-CCES system with exhaust waste heat recovery (System 3). An economic analysis was established for the systems. Based on the thermodynamic model of a baseline TC-CCES system (System 1), Systems 2 and 3 were developed. Although the energy storage density remained largely unchanged, the round-trip efficiency (RTE) values for System 2 and System 3 increased by 9.70% and 9.76%, respectively, compared to System 1 (72.16%). System 3 achieved an annual total revenue of 3.53 million CNY, resulting in an annual net profit of 1.70 million CNY, which is approximately 3.7% higher than that of System 2 (1.64 million CNY).