Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems
The imbalance between the demand and supply of intermittent renewable energy can be mitigated by latent heat thermal energy storage (LHTES) devices. This study suggests a novel polygonal tube LHTES system that combines the fins and tube wall into a single structure in order to increase the heat stor...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25000875 |
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| author | Zihao Cheng Juan Du Shuao Jia Chengxiang Xiao Feng Jiao Yuxiang Hong |
| author_facet | Zihao Cheng Juan Du Shuao Jia Chengxiang Xiao Feng Jiao Yuxiang Hong |
| author_sort | Zihao Cheng |
| collection | DOAJ |
| description | The imbalance between the demand and supply of intermittent renewable energy can be mitigated by latent heat thermal energy storage (LHTES) devices. This study suggests a novel polygonal tube LHTES system that combines the fins and tube wall into a single structure in order to increase the heat storage power, improve the system's heat transfer efficiency, and effectively enhance thermal conductivity to better meet the needs of industrial production. The effects of fins' maximum vertical height (Lmax) and tube shapes on the LHTES performance are investigated statistically. The results demonstrate that compared to the traditional circular tube LHTES system, employing the polygonal LHTES system can increase average integral heat flux by up to 14.53 %, enhance power by up to 21.21 %, and reduce average integral thermal entropy generation by up to 23.97 %, which effectively reduces the energy consumption of the system. Moreover, increasing Lmax from 15 mm to 21 mm enables a maximum enhancement of 186.85 % in the mean integral heat flux, a maximum boost of 191.36 % in the power, and a maximum increase of 148.52 % in the mean integral thermal entropy generation. This work can provide theoretical guidance for further research on enhanced heat transfer in polygonal double-tube LHTES systems. |
| format | Article |
| id | doaj-art-36f55a35620847519fc983cc797a1c5f |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-36f55a35620847519fc983cc797a1c5f2025-02-10T04:34:22ZengElsevierCase Studies in Thermal Engineering2214-157X2025-03-0167105827Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systemsZihao Cheng0Juan Du1Shuao Jia2Chengxiang Xiao3Feng Jiao4Yuxiang Hong5School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, ChinaSchool of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, ChinaSchool of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, ChinaSchool of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, ChinaSchool of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, China; Corresponding author.School of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China; Corresponding author.The imbalance between the demand and supply of intermittent renewable energy can be mitigated by latent heat thermal energy storage (LHTES) devices. This study suggests a novel polygonal tube LHTES system that combines the fins and tube wall into a single structure in order to increase the heat storage power, improve the system's heat transfer efficiency, and effectively enhance thermal conductivity to better meet the needs of industrial production. The effects of fins' maximum vertical height (Lmax) and tube shapes on the LHTES performance are investigated statistically. The results demonstrate that compared to the traditional circular tube LHTES system, employing the polygonal LHTES system can increase average integral heat flux by up to 14.53 %, enhance power by up to 21.21 %, and reduce average integral thermal entropy generation by up to 23.97 %, which effectively reduces the energy consumption of the system. Moreover, increasing Lmax from 15 mm to 21 mm enables a maximum enhancement of 186.85 % in the mean integral heat flux, a maximum boost of 191.36 % in the power, and a maximum increase of 148.52 % in the mean integral thermal entropy generation. This work can provide theoretical guidance for further research on enhanced heat transfer in polygonal double-tube LHTES systems.http://www.sciencedirect.com/science/article/pii/S2214157X25000875Latent heat thermal energy storageTube shapePhase change materialMeltingEntropy generation |
| spellingShingle | Zihao Cheng Juan Du Shuao Jia Chengxiang Xiao Feng Jiao Yuxiang Hong Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems Case Studies in Thermal Engineering Latent heat thermal energy storage Tube shape Phase change material Melting Entropy generation |
| title | Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems |
| title_full | Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems |
| title_fullStr | Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems |
| title_full_unstemmed | Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems |
| title_short | Impact of tube shapes on the energy storage and thermal-hydraulic performances of finned latent heat energy storage systems |
| title_sort | impact of tube shapes on the energy storage and thermal hydraulic performances of finned latent heat energy storage systems |
| topic | Latent heat thermal energy storage Tube shape Phase change material Melting Entropy generation |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25000875 |
| work_keys_str_mv | AT zihaocheng impactoftubeshapesontheenergystorageandthermalhydraulicperformancesoffinnedlatentheatenergystoragesystems AT juandu impactoftubeshapesontheenergystorageandthermalhydraulicperformancesoffinnedlatentheatenergystoragesystems AT shuaojia impactoftubeshapesontheenergystorageandthermalhydraulicperformancesoffinnedlatentheatenergystoragesystems AT chengxiangxiao impactoftubeshapesontheenergystorageandthermalhydraulicperformancesoffinnedlatentheatenergystoragesystems AT fengjiao impactoftubeshapesontheenergystorageandthermalhydraulicperformancesoffinnedlatentheatenergystoragesystems AT yuxianghong impactoftubeshapesontheenergystorageandthermalhydraulicperformancesoffinnedlatentheatenergystoragesystems |