A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick
High power electronics require ultra-thin heat pipe (UTHP) with more efficient heat transfer capabilities to meet thermal management challenges. And the design of the wick structure is crucial to the heat transfer performance improvement of the UTHP. At the present work, a thermo-hydraulic model is...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | e-Prime: Advances in Electrical Engineering, Electronics and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772671123000128 |
| _version_ | 1827990990166687744 |
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| author | Tang Xiong Rui Li Yunhua Gan Qiliang Luo Yong Li Ronghui Qi |
| author_facet | Tang Xiong Rui Li Yunhua Gan Qiliang Luo Yong Li Ronghui Qi |
| author_sort | Tang Xiong |
| collection | DOAJ |
| description | High power electronics require ultra-thin heat pipe (UTHP) with more efficient heat transfer capabilities to meet thermal management challenges. And the design of the wick structure is crucial to the heat transfer performance improvement of the UTHP. At the present work, a thermo-hydraulic model is proposed for UTHP with composite mesh-grooved wick structure and the potential applications of the hybrid wick with non-full coverage by mesh is analyzed. According to the different mesh coverage areas, the wick structures are classified into three types, including evaporator covered, evaporator-adiabatic section covered, and full covered. The results show the flow characteristics and thermal performance of UTHPs is closely related to mesh coverage area and vapor core thickness. The reduction in mesh coverage area causes an expansion in vapor space, the vapor velocity and the vapor pressure drop both decreases, the mass flow rises with the higher vapor-liquid circulation efficiency. The liquid pressure drop is positively related to working fluid mass flow. Moreover, a theoretical model to predict the heat transfer limit of the heat pipe with composite wick was established and verified by experimental results with a maximum error of 3.63%. |
| first_indexed | 2024-04-10T00:43:41Z |
| format | Article |
| id | doaj.art-237968c2ff0a48938446a9d89b27a63a |
| institution | Directory Open Access Journal |
| issn | 2772-6711 |
| language | English |
| last_indexed | 2024-04-10T00:43:41Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | e-Prime: Advances in Electrical Engineering, Electronics and Energy |
| spelling | doaj.art-237968c2ff0a48938446a9d89b27a63a2023-03-14T04:09:22ZengElseviere-Prime: Advances in Electrical Engineering, Electronics and Energy2772-67112023-03-013100117A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wickTang Xiong0Rui Li1Yunhua Gan2Qiliang Luo3Yong Li4Ronghui Qi5School of Electric Power Engineering, South China University of Technology, Wushan Road, Tianhe District, Guangzhou 510640, PR ChinaSchool of Electric Power Engineering, South China University of Technology, Wushan Road, Tianhe District, Guangzhou 510640, PR ChinaSchool of Electric Power Engineering, South China University of Technology, Wushan Road, Tianhe District, Guangzhou 510640, PR China; Corresponding author.Jiangxi Naile Copper Co., Ltd., Yingtan 335211, PR ChinaSchool of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, PR ChinaSchool of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR ChinaHigh power electronics require ultra-thin heat pipe (UTHP) with more efficient heat transfer capabilities to meet thermal management challenges. And the design of the wick structure is crucial to the heat transfer performance improvement of the UTHP. At the present work, a thermo-hydraulic model is proposed for UTHP with composite mesh-grooved wick structure and the potential applications of the hybrid wick with non-full coverage by mesh is analyzed. According to the different mesh coverage areas, the wick structures are classified into three types, including evaporator covered, evaporator-adiabatic section covered, and full covered. The results show the flow characteristics and thermal performance of UTHPs is closely related to mesh coverage area and vapor core thickness. The reduction in mesh coverage area causes an expansion in vapor space, the vapor velocity and the vapor pressure drop both decreases, the mass flow rises with the higher vapor-liquid circulation efficiency. The liquid pressure drop is positively related to working fluid mass flow. Moreover, a theoretical model to predict the heat transfer limit of the heat pipe with composite wick was established and verified by experimental results with a maximum error of 3.63%.http://www.sciencedirect.com/science/article/pii/S2772671123000128Ultra-thin heat pipeNumerical simulationComposite mesh-grooved wickHybrid wick structureMaximum heat transfer capacity |
| spellingShingle | Tang Xiong Rui Li Yunhua Gan Qiliang Luo Yong Li Ronghui Qi A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick e-Prime: Advances in Electrical Engineering, Electronics and Energy Ultra-thin heat pipe Numerical simulation Composite mesh-grooved wick Hybrid wick structure Maximum heat transfer capacity |
| title | A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick |
| title_full | A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick |
| title_fullStr | A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick |
| title_full_unstemmed | A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick |
| title_short | A study on thermal and hydraulic performance of ultra-thin heat pipe with hybrid mesh-groove wick |
| title_sort | study on thermal and hydraulic performance of ultra thin heat pipe with hybrid mesh groove wick |
| topic | Ultra-thin heat pipe Numerical simulation Composite mesh-grooved wick Hybrid wick structure Maximum heat transfer capacity |
| url | http://www.sciencedirect.com/science/article/pii/S2772671123000128 |
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