Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types
Compressed Air Energy Storage (CAES) is a long-time electricity storage technology, whereas the low efficiency restricts its popularization. Recycling waste heat from interstage coolers can enhance performance of CAES, and organic Rankine cycle (ORC) shows good potential. Interstage coolers have mul...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25008093 |
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| author | Xu Chen Jian Li Yunfei Zhang Mingzhe Yu Yujie Zhang Xingying Chen Jun Shen |
| author_facet | Xu Chen Jian Li Yunfei Zhang Mingzhe Yu Yujie Zhang Xingying Chen Jun Shen |
| author_sort | Xu Chen |
| collection | DOAJ |
| description | Compressed Air Energy Storage (CAES) is a long-time electricity storage technology, whereas the low efficiency restricts its popularization. Recycling waste heat from interstage coolers can enhance performance of CAES, and organic Rankine cycle (ORC) shows good potential. Interstage coolers have multiple stages with different temperatures. Using the parallel ORC (PORC) potentially improves the recovery efficiency than the traditional single ORC (SORC). Meanwhile, the zeotropic mixture usually has a better thermodynamic performance but a poorer economic performance than common pure fluids. This paper studied the optimal scheme of ORC-based waste heat recovery system for CAES considering various system layouts and working fluid types. Single-objective optimization results show that using SORC will cause a 52.8 %–56.7 % increase in net present value while a 1.8 %–2.0 % decrease in net output power, compared to using PORC. Using zeotropic mixtures can achieve a 5.9 %–6.1 % increase in net output power and a 0.7 %–3.3 % increase in the net present value, compared to using pure fluids. Weighing thermodynamic and economic pursuits, the best design scheme is SORC with zeotropic mixtures, whose net output power and net present value are 2.74 MW and 5.29 × 106 $, respectively. Compared to without waste heat utilization, this scheme improves the efficiency by 4.0 % for CAES. |
| format | Article |
| id | doaj-art-908733d69a5940f3bedd4a96e094e729 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-908733d69a5940f3bedd4a96e094e7292025-08-20T02:35:06ZengElsevierCase Studies in Thermal Engineering2214-157X2025-09-017310654910.1016/j.csite.2025.106549Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid typesXu Chen0Jian Li1Yunfei Zhang2Mingzhe Yu3Yujie Zhang4Xingying Chen5Jun Shen6School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, PR ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, PR China; Corresponding author.School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, PR ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, PR ChinaCollege of Geographic Sciences, Harbin Normal University, Harbin, 150025, PR ChinaSchool of Electrical and Power Engineering, Hohai University, Nanjing, 210024, PR ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, PR ChinaCompressed Air Energy Storage (CAES) is a long-time electricity storage technology, whereas the low efficiency restricts its popularization. Recycling waste heat from interstage coolers can enhance performance of CAES, and organic Rankine cycle (ORC) shows good potential. Interstage coolers have multiple stages with different temperatures. Using the parallel ORC (PORC) potentially improves the recovery efficiency than the traditional single ORC (SORC). Meanwhile, the zeotropic mixture usually has a better thermodynamic performance but a poorer economic performance than common pure fluids. This paper studied the optimal scheme of ORC-based waste heat recovery system for CAES considering various system layouts and working fluid types. Single-objective optimization results show that using SORC will cause a 52.8 %–56.7 % increase in net present value while a 1.8 %–2.0 % decrease in net output power, compared to using PORC. Using zeotropic mixtures can achieve a 5.9 %–6.1 % increase in net output power and a 0.7 %–3.3 % increase in the net present value, compared to using pure fluids. Weighing thermodynamic and economic pursuits, the best design scheme is SORC with zeotropic mixtures, whose net output power and net present value are 2.74 MW and 5.29 × 106 $, respectively. Compared to without waste heat utilization, this scheme improves the efficiency by 4.0 % for CAES.http://www.sciencedirect.com/science/article/pii/S2214157X25008093Waste heatMulti-objective optimizationCompressed air energy storageZeotropic mixtureOrganic Rankine cycle |
| spellingShingle | Xu Chen Jian Li Yunfei Zhang Mingzhe Yu Yujie Zhang Xingying Chen Jun Shen Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types Case Studies in Thermal Engineering Waste heat Multi-objective optimization Compressed air energy storage Zeotropic mixture Organic Rankine cycle |
| title | Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types |
| title_full | Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types |
| title_fullStr | Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types |
| title_full_unstemmed | Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types |
| title_short | Design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types |
| title_sort | design of optimal waste heat recovery system for compressed air energy storage considering various system layouts and working fluid types |
| topic | Waste heat Multi-objective optimization Compressed air energy storage Zeotropic mixture Organic Rankine cycle |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25008093 |
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