Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling
Due to its small structures and high energy efficiency, the Brayton cycle using supercritical carbon dioxide (sCO2) can be implemented in various energy industries. The simulation model for a sCO2 recompression Brayton (RB) system with a two-stage compression and intercooling process (TCIP) is devel...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X2401534X |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850168362556981248 |
|---|---|
| author | Jiahui Jiang Yongqiang Yu Yuanyang Zhao Guangbin Liu Qichao Yang Yunxia Liu Liansheng Li |
| author_facet | Jiahui Jiang Yongqiang Yu Yuanyang Zhao Guangbin Liu Qichao Yang Yunxia Liu Liansheng Li |
| author_sort | Jiahui Jiang |
| collection | DOAJ |
| description | Due to its small structures and high energy efficiency, the Brayton cycle using supercritical carbon dioxide (sCO2) can be implemented in various energy industries. The simulation model for a sCO2 recompression Brayton (RB) system with a two-stage compression and intercooling process (TCIP) is developed. At the design working conditions, there are minimum and optimum split ratios for the sCO2 RB with TCIP cycle. The sCO2 RB with TCIP cycle has a broader range of split ratios compared to the RB cycle. The sCO2 RB with TCIP cycle can achieve a minimum split ratio of 0.315, compared to 0.36 for the sCO2 RB cycle. The maximum efficiency of the sCO2 RB with TCIP cycle is 50.95 %, which surpasses the efficiency of the sCO2 RB cycle by 3.14 %. There exists an optimal value for the first-stage pressure ratio because the maximum efficiency of the sCO2 RB with the TCIP system tends to increase and then decrease with the increase in the first-stage pressure ratio. The pressure ratio of 1.1 for the first-stage compressor, corresponding to an interstage pressure of 8.25 MPa, maximizes the efficiency of the sCO2 RB with the TCIP cycle. The results can be used to further explore the applicability of sCO2 RB with TCIP. |
| format | Article |
| id | doaj-art-3977e6cdc01f4f9eb5dd92d7ccf6bae0 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-3977e6cdc01f4f9eb5dd92d7ccf6bae02025-08-20T02:20:58ZengElsevierCase Studies in Thermal Engineering2214-157X2024-12-016410550310.1016/j.csite.2024.105503Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercoolingJiahui Jiang0Yongqiang Yu1Yuanyang Zhao2Guangbin Liu3Qichao Yang4Yunxia Liu5Liansheng Li6College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaCollege of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaCorresponding author.; College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaCollege of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaCollege of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaCollege of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaCollege of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, ChinaDue to its small structures and high energy efficiency, the Brayton cycle using supercritical carbon dioxide (sCO2) can be implemented in various energy industries. The simulation model for a sCO2 recompression Brayton (RB) system with a two-stage compression and intercooling process (TCIP) is developed. At the design working conditions, there are minimum and optimum split ratios for the sCO2 RB with TCIP cycle. The sCO2 RB with TCIP cycle has a broader range of split ratios compared to the RB cycle. The sCO2 RB with TCIP cycle can achieve a minimum split ratio of 0.315, compared to 0.36 for the sCO2 RB cycle. The maximum efficiency of the sCO2 RB with TCIP cycle is 50.95 %, which surpasses the efficiency of the sCO2 RB cycle by 3.14 %. There exists an optimal value for the first-stage pressure ratio because the maximum efficiency of the sCO2 RB with the TCIP system tends to increase and then decrease with the increase in the first-stage pressure ratio. The pressure ratio of 1.1 for the first-stage compressor, corresponding to an interstage pressure of 8.25 MPa, maximizes the efficiency of the sCO2 RB with the TCIP cycle. The results can be used to further explore the applicability of sCO2 RB with TCIP.http://www.sciencedirect.com/science/article/pii/S2214157X2401534XSupercritical carbon dioxide (sCO2)Two-stage compressionPinch pointIntercoolingBrayton cycle |
| spellingShingle | Jiahui Jiang Yongqiang Yu Yuanyang Zhao Guangbin Liu Qichao Yang Yunxia Liu Liansheng Li Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling Case Studies in Thermal Engineering Supercritical carbon dioxide (sCO2) Two-stage compression Pinch point Intercooling Brayton cycle |
| title | Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling |
| title_full | Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling |
| title_fullStr | Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling |
| title_full_unstemmed | Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling |
| title_short | Performance evaluation of supercritical CO2 Brayton cycle with two-stage compression and intercooling |
| title_sort | performance evaluation of supercritical co2 brayton cycle with two stage compression and intercooling |
| topic | Supercritical carbon dioxide (sCO2) Two-stage compression Pinch point Intercooling Brayton cycle |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X2401534X |
| work_keys_str_mv | AT jiahuijiang performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling AT yongqiangyu performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling AT yuanyangzhao performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling AT guangbinliu performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling AT qichaoyang performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling AT yunxialiu performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling AT lianshengli performanceevaluationofsupercriticalco2braytoncyclewithtwostagecompressionandintercooling |