Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment
The thermal storage system is widely used to reduce the mismatch between thermal energy supply and demand in time and space, and its thermal performance is a critical factor in the system's thermal efficiency. The thermal performance of the Sensible Thermal Energy Storage Unit (STESU), the Late...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X2200884X |
| _version_ | 1797956253270409216 |
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| author | Junlong Zou Fan He Yunyang Qi Xi Meng Wenkai Ma |
| author_facet | Junlong Zou Fan He Yunyang Qi Xi Meng Wenkai Ma |
| author_sort | Junlong Zou |
| collection | DOAJ |
| description | The thermal storage system is widely used to reduce the mismatch between thermal energy supply and demand in time and space, and its thermal performance is a critical factor in the system's thermal efficiency. The thermal performance of the Sensible Thermal Energy Storage Unit (STESU), the Latent Thermal Energy Storage Unit (LTESU), and the LTESU integrated with Copper Foam Fin (CFF) were compared through comparative experiments. The experimental results showed that the thermal changing rate of STESU was higher than that of other units, and there was no apparent thermal stratification. However, LTESU had the lowest thermal changing rate with apparent thermal stratification. During the thermal charging process, the solid-liquid interface on the LTESU cross-section formed an inverted-triangle shape. The lower part of the PCM could not change its phase as a dead zone and failed to participate in the thermal charging and discharging. Even so, the thermal efficiency of LTESU was 18.7% higher than that of STESU. Integrating with CFF could increase the thermal charging capacity, the thermal discharging capacity and the thermal efficiency by 51.1%, 55.9% and 10.8%, respectively. |
| first_indexed | 2024-04-10T23:46:05Z |
| format | Article |
| id | doaj.art-9784de830fb247968a4b923eaf948529 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-10T23:46:05Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-9784de830fb247968a4b923eaf9485292023-01-11T04:29:18ZengElsevierCase Studies in Thermal Engineering2214-157X2023-01-0141102647Thermal performance improvement of thermal energy storage systems by employing a contrastive experimentJunlong Zou0Fan He1Yunyang Qi2Xi Meng3Wenkai Ma4Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, PR China; Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu, 808-0135, JapanInnovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, PR China; Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu, 808-0135, JapanInnovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, PR ChinaInnovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, PR China; Corresponding author. Fushun Road 11st, Qingdao city, Shandong province, PR China.Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, PR ChinaThe thermal storage system is widely used to reduce the mismatch between thermal energy supply and demand in time and space, and its thermal performance is a critical factor in the system's thermal efficiency. The thermal performance of the Sensible Thermal Energy Storage Unit (STESU), the Latent Thermal Energy Storage Unit (LTESU), and the LTESU integrated with Copper Foam Fin (CFF) were compared through comparative experiments. The experimental results showed that the thermal changing rate of STESU was higher than that of other units, and there was no apparent thermal stratification. However, LTESU had the lowest thermal changing rate with apparent thermal stratification. During the thermal charging process, the solid-liquid interface on the LTESU cross-section formed an inverted-triangle shape. The lower part of the PCM could not change its phase as a dead zone and failed to participate in the thermal charging and discharging. Even so, the thermal efficiency of LTESU was 18.7% higher than that of STESU. Integrating with CFF could increase the thermal charging capacity, the thermal discharging capacity and the thermal efficiency by 51.1%, 55.9% and 10.8%, respectively.http://www.sciencedirect.com/science/article/pii/S2214157X2200884XPhase-change materialCopper foam finThermal energy storageThermal efficiency |
| spellingShingle | Junlong Zou Fan He Yunyang Qi Xi Meng Wenkai Ma Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment Case Studies in Thermal Engineering Phase-change material Copper foam fin Thermal energy storage Thermal efficiency |
| title | Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment |
| title_full | Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment |
| title_fullStr | Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment |
| title_full_unstemmed | Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment |
| title_short | Thermal performance improvement of thermal energy storage systems by employing a contrastive experiment |
| title_sort | thermal performance improvement of thermal energy storage systems by employing a contrastive experiment |
| topic | Phase-change material Copper foam fin Thermal energy storage Thermal efficiency |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X2200884X |
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