Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency
The aim of this research is to investigate mass and heat transfer of anodic aluminum oxide in packed-bed thermocline vessel with molten salt system (5% Lithium, 20% sodium, 50% potassium and 25% calcium). According to the computational fluid dynamic simulation, the ceramic ball that is packed inside...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23005646 |
| _version_ | 1827854895425781760 |
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| author | Direk Nualsing Nattadon Pannucharoenwong Snunkhaem Echaroj Phadungsak Rattanadecho |
| author_facet | Direk Nualsing Nattadon Pannucharoenwong Snunkhaem Echaroj Phadungsak Rattanadecho |
| author_sort | Direk Nualsing |
| collection | DOAJ |
| description | The aim of this research is to investigate mass and heat transfer of anodic aluminum oxide in packed-bed thermocline vessel with molten salt system (5% Lithium, 20% sodium, 50% potassium and 25% calcium). According to the computational fluid dynamic simulation, the ceramic ball that is packed inside the vessel does not have a significant impact on the mass transfer of anodic aluminum oxide in the molten salt system. Heat storage performance testing was conducted in a thermocline vessel (packed-bed zone 0.7 m in length and 0.3 m diameter) and molten salt flow rate between the ranges of 0.5–0.7 m3/h. Two different molten salt systems were studied including a normal molten salt system and a molten salt system with 0.5 wt% anodic aluminum oxide. An increase in molten salt flow rate have a positive impact on heat transfer inside the vessel due to the increase in turbulence of the flow. A decrease in charging time from 3.75 h to 3.5 h was observed for molten salt with 0.5 wt% anodic aluminum oxide. A seven-cycle charge/discharge test revealed that addition of 0.5 wt% anodic aluminum oxide resulted in a smaller reduction in heat transfer efficiency and actual energy storage. Heat storage decreased from 20.42 to 19.54 MJ corresponding heat transfer efficiency of only 87 to 85% for molten salt system consisting of anodic aluminum oxide. |
| first_indexed | 2024-03-12T11:36:13Z |
| format | Article |
| id | doaj.art-23d28c04d7cd4e878f313fbc0872d09d |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-12T11:36:13Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-23d28c04d7cd4e878f313fbc0872d09d2023-09-01T05:01:36ZengElsevierCase Studies in Thermal Engineering2214-157X2023-09-0149103258Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiencyDirek Nualsing0Nattadon Pannucharoenwong1Snunkhaem Echaroj2Phadungsak Rattanadecho3Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathumthani, 12120, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathumthani, 12120, Thailand; Corresponding author.Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathumthani, 12120, ThailandCenter of Excellence in Electromagnetic Energy Utilization in Engineering (CEEE), Department of Mechanical Engineering, Faculty of Engineering, Thammasat University, Pathumthani, 12120, ThailandThe aim of this research is to investigate mass and heat transfer of anodic aluminum oxide in packed-bed thermocline vessel with molten salt system (5% Lithium, 20% sodium, 50% potassium and 25% calcium). According to the computational fluid dynamic simulation, the ceramic ball that is packed inside the vessel does not have a significant impact on the mass transfer of anodic aluminum oxide in the molten salt system. Heat storage performance testing was conducted in a thermocline vessel (packed-bed zone 0.7 m in length and 0.3 m diameter) and molten salt flow rate between the ranges of 0.5–0.7 m3/h. Two different molten salt systems were studied including a normal molten salt system and a molten salt system with 0.5 wt% anodic aluminum oxide. An increase in molten salt flow rate have a positive impact on heat transfer inside the vessel due to the increase in turbulence of the flow. A decrease in charging time from 3.75 h to 3.5 h was observed for molten salt with 0.5 wt% anodic aluminum oxide. A seven-cycle charge/discharge test revealed that addition of 0.5 wt% anodic aluminum oxide resulted in a smaller reduction in heat transfer efficiency and actual energy storage. Heat storage decreased from 20.42 to 19.54 MJ corresponding heat transfer efficiency of only 87 to 85% for molten salt system consisting of anodic aluminum oxide.http://www.sciencedirect.com/science/article/pii/S2214157X23005646Thermocline vesselMolten saltAnodic aluminum oxideCyclic testing |
| spellingShingle | Direk Nualsing Nattadon Pannucharoenwong Snunkhaem Echaroj Phadungsak Rattanadecho Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency Case Studies in Thermal Engineering Thermocline vessel Molten salt Anodic aluminum oxide Cyclic testing |
| title | Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency |
| title_full | Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency |
| title_fullStr | Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency |
| title_full_unstemmed | Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency |
| title_short | Investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency |
| title_sort | investigation of molten salts incorporated with anodic aluminum oxide as thermal energy storage fluid on heat transfer efficiency |
| topic | Thermocline vessel Molten salt Anodic aluminum oxide Cyclic testing |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23005646 |
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