Numerical study of a copper oxide-based thermochemical heat storage system
A multi-physics model is developed to investigate the performance of high-temperature thermochemical heat storage using the redox looping cycle of CuO/Cu2O. The model involved flow in free and porous domains, heat transfer in the CuO pellet-packed porous domain (i.e., convection between fluid and pe...
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| Language: | English |
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Elsevier
2024-11-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24013467 |
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| author | Zhen Cao Bas Joris de Leeuw Tianchao Xie Abhishek K. Singh |
| author_facet | Zhen Cao Bas Joris de Leeuw Tianchao Xie Abhishek K. Singh |
| author_sort | Zhen Cao |
| collection | DOAJ |
| description | A multi-physics model is developed to investigate the performance of high-temperature thermochemical heat storage using the redox looping cycle of CuO/Cu2O. The model involved flow in free and porous domains, heat transfer in the CuO pellet-packed porous domain (i.e., convection between fluid and pellets, conduction and radiation among pellets), and the endothermic/exothermic reaction. The reaction rate was estimated using a non-parametric kinetic approach which depends on temperature and extent of the reaction. The model was validated within <10 % error margin by the experimental measurements of the temperature inside the reactor and the molar fraction of O2 at the reactor outlet. The validated model is used to determine the temperature variation and reaction evolution in the pellet-packed domain. In the end, parameter studies were implemented, including inlet mass flow rate, reduction temperature, and oxidation temperature. It was found that a large inlet mass flow brings about a high output temperature, and the reaction runs faster with the larger inlet mass flow. Similarly, increasing the furnace temperature during the reduction process (reduction temperature) also increases the output temperature and accelerates the reaction. In contrast, increasing the furnace temperature during the oxidation process (oxidation temperature) only slightly affected the reaction in the present case. This model could provide useful insights into reactor design, scale-up, and operating conditions to improve the energy storage system performance. |
| format | Article |
| id | doaj-art-7ced3ec4f7ec4e5ca7a8eaf4ef93d9ed |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-7ced3ec4f7ec4e5ca7a8eaf4ef93d9ed2025-08-20T02:14:45ZengElsevierCase Studies in Thermal Engineering2214-157X2024-11-016310531510.1016/j.csite.2024.105315Numerical study of a copper oxide-based thermochemical heat storage systemZhen Cao0Bas Joris de Leeuw1Tianchao Xie2Abhishek K. Singh3Department of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the NetherlandsDepartment of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the NetherlandsDepartment of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the NetherlandsCorresponding author.; Department of Thermal and Fluid Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the NetherlandsA multi-physics model is developed to investigate the performance of high-temperature thermochemical heat storage using the redox looping cycle of CuO/Cu2O. The model involved flow in free and porous domains, heat transfer in the CuO pellet-packed porous domain (i.e., convection between fluid and pellets, conduction and radiation among pellets), and the endothermic/exothermic reaction. The reaction rate was estimated using a non-parametric kinetic approach which depends on temperature and extent of the reaction. The model was validated within <10 % error margin by the experimental measurements of the temperature inside the reactor and the molar fraction of O2 at the reactor outlet. The validated model is used to determine the temperature variation and reaction evolution in the pellet-packed domain. In the end, parameter studies were implemented, including inlet mass flow rate, reduction temperature, and oxidation temperature. It was found that a large inlet mass flow brings about a high output temperature, and the reaction runs faster with the larger inlet mass flow. Similarly, increasing the furnace temperature during the reduction process (reduction temperature) also increases the output temperature and accelerates the reaction. In contrast, increasing the furnace temperature during the oxidation process (oxidation temperature) only slightly affected the reaction in the present case. This model could provide useful insights into reactor design, scale-up, and operating conditions to improve the energy storage system performance.http://www.sciencedirect.com/science/article/pii/S2214157X24013467Numerical modelThermochemical heat storageMetal oxideHigh temperature |
| spellingShingle | Zhen Cao Bas Joris de Leeuw Tianchao Xie Abhishek K. Singh Numerical study of a copper oxide-based thermochemical heat storage system Case Studies in Thermal Engineering Numerical model Thermochemical heat storage Metal oxide High temperature |
| title | Numerical study of a copper oxide-based thermochemical heat storage system |
| title_full | Numerical study of a copper oxide-based thermochemical heat storage system |
| title_fullStr | Numerical study of a copper oxide-based thermochemical heat storage system |
| title_full_unstemmed | Numerical study of a copper oxide-based thermochemical heat storage system |
| title_short | Numerical study of a copper oxide-based thermochemical heat storage system |
| title_sort | numerical study of a copper oxide based thermochemical heat storage system |
| topic | Numerical model Thermochemical heat storage Metal oxide High temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24013467 |
| work_keys_str_mv | AT zhencao numericalstudyofacopperoxidebasedthermochemicalheatstoragesystem AT basjorisdeleeuw numericalstudyofacopperoxidebasedthermochemicalheatstoragesystem AT tianchaoxie numericalstudyofacopperoxidebasedthermochemicalheatstoragesystem AT abhishekksingh numericalstudyofacopperoxidebasedthermochemicalheatstoragesystem |