Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change
The aim of this paper is to enhance the efficiency of the Solid Oxide Fuel Cell (SOFC) system through various system designs and parameters. To evaluate the effects of design configurations, the impact of high-temperature/low-temperature anode off-gas recycle (HT/LT-AGR) on system performance was in...
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Elsevier
2025-04-01
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| Series: | Journal of Power Sources Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S266624852500006X |
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| author | Hsin-Yi Lai Hung-Ju Lin Yen-Hsin Chan |
| author_facet | Hsin-Yi Lai Hung-Ju Lin Yen-Hsin Chan |
| author_sort | Hsin-Yi Lai |
| collection | DOAJ |
| description | The aim of this paper is to enhance the efficiency of the Solid Oxide Fuel Cell (SOFC) system through various system designs and parameters. To evaluate the effects of design configurations, the impact of high-temperature/low-temperature anode off-gas recycle (HT/LT-AGR) on system performance was investigated by calculating the entropy using the second law of thermodynamics. By analyzing the system with different AGR designs and considering the increasing entropy of heat components in the SOFC system, the efficiency calculations can be more practical and accurate.In this study, the working efficiency of the SOFC system with HT-AGR is 56.215 %, which is 4.7 % higher than with LT-AGR. The results show that the heat exchanger (HEX) experiences the largest increasing entropy during the power generation process due to the significant temperature difference. At the end of this project, a CO2 reformer will be used to optimize the system, decreasing the mole rate of CO2 and CH4 while increasing the mole rate of H2. Based on the simulation results, using a CO2 reformer can increase the mole rate of H2 by 3 %, improving the system efficiency up to 56.97 %. |
| format | Article |
| id | doaj-art-e40e5046d9bc4455a510e222cae52914 |
| institution | Kabale University |
| issn | 2666-2485 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Power Sources Advances |
| spelling | doaj-art-e40e5046d9bc4455a510e222cae529142025-02-09T05:01:27ZengElsevierJournal of Power Sources Advances2666-24852025-04-0132100172Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy changeHsin-Yi Lai0Hung-Ju Lin1Yen-Hsin Chan2Department of Mechanical Engineering, National Cheng Kung University, Tainan, 701, TaiwanDepartment of Aeronautics and Astronautics, National Cheng Kung University, Tainan, 701, TaiwanDepartment of Mechanical and Computer-Aided Engineering, Feng Chia University, Taichung, 407, Taiwan; Corresponding author.The aim of this paper is to enhance the efficiency of the Solid Oxide Fuel Cell (SOFC) system through various system designs and parameters. To evaluate the effects of design configurations, the impact of high-temperature/low-temperature anode off-gas recycle (HT/LT-AGR) on system performance was investigated by calculating the entropy using the second law of thermodynamics. By analyzing the system with different AGR designs and considering the increasing entropy of heat components in the SOFC system, the efficiency calculations can be more practical and accurate.In this study, the working efficiency of the SOFC system with HT-AGR is 56.215 %, which is 4.7 % higher than with LT-AGR. The results show that the heat exchanger (HEX) experiences the largest increasing entropy during the power generation process due to the significant temperature difference. At the end of this project, a CO2 reformer will be used to optimize the system, decreasing the mole rate of CO2 and CH4 while increasing the mole rate of H2. Based on the simulation results, using a CO2 reformer can increase the mole rate of H2 by 3 %, improving the system efficiency up to 56.97 %.http://www.sciencedirect.com/science/article/pii/S266624852500006XSolid oxide fuel cellAnode off-gas recycleEntropyExergy |
| spellingShingle | Hsin-Yi Lai Hung-Ju Lin Yen-Hsin Chan Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change Journal of Power Sources Advances Solid oxide fuel cell Anode off-gas recycle Entropy Exergy |
| title | Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change |
| title_full | Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change |
| title_fullStr | Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change |
| title_full_unstemmed | Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change |
| title_short | Efficiency Enhancement on Solid Oxide Fuel Cell system with anode off-gas recycle by evaluating entropy and exergy change |
| title_sort | efficiency enhancement on solid oxide fuel cell system with anode off gas recycle by evaluating entropy and exergy change |
| topic | Solid oxide fuel cell Anode off-gas recycle Entropy Exergy |
| url | http://www.sciencedirect.com/science/article/pii/S266624852500006X |
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