Efficacy of angled metallic fins for enhancing phase change material melting
Research on enhancing phase change material (PCM) heat transfer is concentrated in latent heat thermal energy storage (LHTES) field, especially with utilization of metallic fins. One interesting fin parameter that was less explored for a rectangular PCM system, is the metal fin's inclined angle...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/161974 |
| _version_ | 1811678320537894912 |
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| author | Qin, Zhen Low, Zheng Hua Ji, Chenzhen Duan, Fei |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Qin, Zhen Low, Zheng Hua Ji, Chenzhen Duan, Fei |
| author_sort | Qin, Zhen |
| collection | NTU |
| description | Research on enhancing phase change material (PCM) heat transfer is concentrated in latent heat thermal energy storage (LHTES) field, especially with utilization of metallic fins. One interesting fin parameter that was less explored for a rectangular PCM system, is the metal fin's inclined angle. This research aims to experimentally validate the hypothesis and evaluate the efficacy of angled metallic fins enhancing PCM melting in a sidewall heated cuboid LHTES system. Experiments indicate that three-dimensional PCM melting in the LHTES unit can be characterized as two dimensional. The angled fins considerably influence temperature evolution of local solid PCM around fins. Compared to the horizontal fin, positive inclined fins with angles of +30° and +15° prolong the PCM melting time by 4.0% and 3.8% respectively, while the downward tilted inclined fins at −15° and −30° promote PCM melting by up to 5.2% melting fraction difference. Extending simulations with seven fin angles and three fin lengths explicate the substantial effect on PCM heat storage, melting time, and temperature uniformity. Particularly, the longest fin at the downward angle of −15° reduces the PCM melting time most. The study shows feasibility of utilizing downward angled fins to enhance PCM transient melting in the LHTES unit. |
| first_indexed | 2024-10-01T02:51:23Z |
| format | Journal Article |
| id | ntu-10356/161974 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:51:23Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1619742022-09-28T01:16:46Z Efficacy of angled metallic fins for enhancing phase change material melting Qin, Zhen Low, Zheng Hua Ji, Chenzhen Duan, Fei School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Phase Change Material Melting Heat Transfer Enhancement Research on enhancing phase change material (PCM) heat transfer is concentrated in latent heat thermal energy storage (LHTES) field, especially with utilization of metallic fins. One interesting fin parameter that was less explored for a rectangular PCM system, is the metal fin's inclined angle. This research aims to experimentally validate the hypothesis and evaluate the efficacy of angled metallic fins enhancing PCM melting in a sidewall heated cuboid LHTES system. Experiments indicate that three-dimensional PCM melting in the LHTES unit can be characterized as two dimensional. The angled fins considerably influence temperature evolution of local solid PCM around fins. Compared to the horizontal fin, positive inclined fins with angles of +30° and +15° prolong the PCM melting time by 4.0% and 3.8% respectively, while the downward tilted inclined fins at −15° and −30° promote PCM melting by up to 5.2% melting fraction difference. Extending simulations with seven fin angles and three fin lengths explicate the substantial effect on PCM heat storage, melting time, and temperature uniformity. Particularly, the longest fin at the downward angle of −15° reduces the PCM melting time most. The study shows feasibility of utilizing downward angled fins to enhance PCM transient melting in the LHTES unit. C. Ji thanks the support from Fundamental Research Funds for Central Universities (Grant No. 22120200417 and 22120210158) and Shanghai Committee of Science and Technology (Grant No. 21ZR1466000) in China. 2022-09-28T01:16:46Z 2022-09-28T01:16:46Z 2022 Journal Article Qin, Z., Low, Z. H., Ji, C. & Duan, F. (2022). Efficacy of angled metallic fins for enhancing phase change material melting. International Communications in Heat and Mass Transfer, 132, 105921-. https://dx.doi.org/10.1016/j.icheatmasstransfer.2022.105921 0735-1933 https://hdl.handle.net/10356/161974 10.1016/j.icheatmasstransfer.2022.105921 2-s2.0-85124238686 132 105921 en International Communications in Heat and Mass Transfer © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Phase Change Material Melting Heat Transfer Enhancement Qin, Zhen Low, Zheng Hua Ji, Chenzhen Duan, Fei Efficacy of angled metallic fins for enhancing phase change material melting |
| title | Efficacy of angled metallic fins for enhancing phase change material melting |
| title_full | Efficacy of angled metallic fins for enhancing phase change material melting |
| title_fullStr | Efficacy of angled metallic fins for enhancing phase change material melting |
| title_full_unstemmed | Efficacy of angled metallic fins for enhancing phase change material melting |
| title_short | Efficacy of angled metallic fins for enhancing phase change material melting |
| title_sort | efficacy of angled metallic fins for enhancing phase change material melting |
| topic | Engineering::Mechanical engineering Phase Change Material Melting Heat Transfer Enhancement |
| url | https://hdl.handle.net/10356/161974 |
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