Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe
A novel three-dimensional asymmetric oscillating heat pipe (3DAOHP) with unequal curvature radius of upper and lower bends has been designed. Setting the basic factor of diameter from 1.9 mm to 6.2 mm, a verification experiment on the criterion of conventional maximum hydraulic diameter (MHD) has be...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-03-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24002065 |
| _version_ | 1797281180952821760 |
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| author | Lilin Chu Jin Xu Zheng Li Xu Zhao |
| author_facet | Lilin Chu Jin Xu Zheng Li Xu Zhao |
| author_sort | Lilin Chu |
| collection | DOAJ |
| description | A novel three-dimensional asymmetric oscillating heat pipe (3DAOHP) with unequal curvature radius of upper and lower bends has been designed. Setting the basic factor of diameter from 1.9 mm to 6.2 mm, a verification experiment on the criterion of conventional maximum hydraulic diameter (MHD) has been conducted. The results show that the 3DAOHP can still perform normally and transfer heat effectively, even if the diameter exceeds the MHD by 98.1 %. And the temperature profiles at each end does not show obvious abnormalities. The thermal performance also does not show any deterioration, which still follows the rule that the larger the diameter, the stronger the heat transfer capability. The thermal resistance of the 6.2 mm 3DAOHP can reach 0.07 °C/W at 1300 W without touching the dry-out limit. Moreover, the frequency and amplitude of hot end temperature fluctuation show suppression as the diameter increases. Therefore, the conventional MHD is not a diameter limitation of oscillating heat pipe (OHP) in enhancing heat transfer. Thus, the availability of OHP in high heat loads can be improved by further increasing the tube diameter. These findings are important for the OHP application in higher heat flux. |
| first_indexed | 2024-03-07T16:53:48Z |
| format | Article |
| id | doaj.art-349c3c12b56847ea866b5e74399d58bd |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-07T16:53:48Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-349c3c12b56847ea866b5e74399d58bd2024-03-03T04:29:44ZengElsevierCase Studies in Thermal Engineering2214-157X2024-03-0155104175Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipeLilin Chu0Jin Xu1Zheng Li2Xu Zhao3Naval Architecture and Shipping College, Guangdong Ocean University, Zhanjiang, 524091, ChinaCorresponding author.; Naval Architecture and Shipping College, Guangdong Ocean University, Zhanjiang, 524091, ChinaCorresponding author.; Naval Architecture and Shipping College, Guangdong Ocean University, Zhanjiang, 524091, ChinaNaval Architecture and Shipping College, Guangdong Ocean University, Zhanjiang, 524091, ChinaA novel three-dimensional asymmetric oscillating heat pipe (3DAOHP) with unequal curvature radius of upper and lower bends has been designed. Setting the basic factor of diameter from 1.9 mm to 6.2 mm, a verification experiment on the criterion of conventional maximum hydraulic diameter (MHD) has been conducted. The results show that the 3DAOHP can still perform normally and transfer heat effectively, even if the diameter exceeds the MHD by 98.1 %. And the temperature profiles at each end does not show obvious abnormalities. The thermal performance also does not show any deterioration, which still follows the rule that the larger the diameter, the stronger the heat transfer capability. The thermal resistance of the 6.2 mm 3DAOHP can reach 0.07 °C/W at 1300 W without touching the dry-out limit. Moreover, the frequency and amplitude of hot end temperature fluctuation show suppression as the diameter increases. Therefore, the conventional MHD is not a diameter limitation of oscillating heat pipe (OHP) in enhancing heat transfer. Thus, the availability of OHP in high heat loads can be improved by further increasing the tube diameter. These findings are important for the OHP application in higher heat flux.http://www.sciencedirect.com/science/article/pii/S2214157X24002065Oscillating heat pipeThree-dimensional asymmetric structureBend curvatureMaximum hydraulic diameter |
| spellingShingle | Lilin Chu Jin Xu Zheng Li Xu Zhao Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe Case Studies in Thermal Engineering Oscillating heat pipe Three-dimensional asymmetric structure Bend curvature Maximum hydraulic diameter |
| title | Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe |
| title_full | Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe |
| title_fullStr | Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe |
| title_full_unstemmed | Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe |
| title_short | Verification experiment of maximum hydraulic diameter in a novel three-dimensional asymmetric oscillating heat pipe |
| title_sort | verification experiment of maximum hydraulic diameter in a novel three dimensional asymmetric oscillating heat pipe |
| topic | Oscillating heat pipe Three-dimensional asymmetric structure Bend curvature Maximum hydraulic diameter |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24002065 |
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