Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks
The balance of the combined effect of wick permeability and capillary pressure is very important to improve the heat transfer capability of the vapor chamber (VC). In this paper, a series of VCs were designed and fabricated, in which the wick was a gradient structure with composite particle shape an...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25000619 |
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| author | Liaofei Yin Jiachen Li Zhou Wang Hongling Lu |
| author_facet | Liaofei Yin Jiachen Li Zhou Wang Hongling Lu |
| author_sort | Liaofei Yin |
| collection | DOAJ |
| description | The balance of the combined effect of wick permeability and capillary pressure is very important to improve the heat transfer capability of the vapor chamber (VC). In this paper, a series of VCs were designed and fabricated, in which the wick was a gradient structure with composite particle shape and composite particle size, and their heat transfer effects were studied experimentally and compared with VCs with uniform-structure wick. The difference in characteristics and mechanisms of heat transfer for various types of VCs at five filling ratios were analyzed. The results indicated that the average temperature on the evaporator side of VC with the gradient-structure wick was 4.45–15 °C lower than that of VC with the uniform-structure wick, indicating that the gradient structure wick significantly improved the VC's heat transfer capability. Moreover, the VC with a composite particle-shape gradient wick (sintered using 75 μm irregular copper powder particles in the hotspot area and 110 μm spherical copper powder particles in the peripheral area) demonstrated the highest heat transfer performance. Its thermal resistance was less than 0.1 °C/W, and the maximum heating power reached 55 W at the optimal filling ratio. |
| format | Article |
| id | doaj-art-b9e38b09dcb0403c96157ac4866f09e0 |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-b9e38b09dcb0403c96157ac4866f09e02025-02-02T05:27:30ZengElsevierCase Studies in Thermal Engineering2214-157X2025-02-0166105801Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicksLiaofei Yin0Jiachen Li1Zhou Wang2Hongling Lu3Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, China; Corresponding author.Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, ChinaPower Machinery Research Institute of Inner Mongolia, Hohhot, 010011, China; Corresponding author.Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, ChinaThe balance of the combined effect of wick permeability and capillary pressure is very important to improve the heat transfer capability of the vapor chamber (VC). In this paper, a series of VCs were designed and fabricated, in which the wick was a gradient structure with composite particle shape and composite particle size, and their heat transfer effects were studied experimentally and compared with VCs with uniform-structure wick. The difference in characteristics and mechanisms of heat transfer for various types of VCs at five filling ratios were analyzed. The results indicated that the average temperature on the evaporator side of VC with the gradient-structure wick was 4.45–15 °C lower than that of VC with the uniform-structure wick, indicating that the gradient structure wick significantly improved the VC's heat transfer capability. Moreover, the VC with a composite particle-shape gradient wick (sintered using 75 μm irregular copper powder particles in the hotspot area and 110 μm spherical copper powder particles in the peripheral area) demonstrated the highest heat transfer performance. Its thermal resistance was less than 0.1 °C/W, and the maximum heating power reached 55 W at the optimal filling ratio.http://www.sciencedirect.com/science/article/pii/S2214157X25000619Vapor chamber (VC)Gradient wickUniform wickFilling ratioHeat transfer capability |
| spellingShingle | Liaofei Yin Jiachen Li Zhou Wang Hongling Lu Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks Case Studies in Thermal Engineering Vapor chamber (VC) Gradient wick Uniform wick Filling ratio Heat transfer capability |
| title | Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks |
| title_full | Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks |
| title_fullStr | Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks |
| title_full_unstemmed | Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks |
| title_short | Experimental study on the heat transfer performance of vapor chamber with uniform/gradient wicks |
| title_sort | experimental study on the heat transfer performance of vapor chamber with uniform gradient wicks |
| topic | Vapor chamber (VC) Gradient wick Uniform wick Filling ratio Heat transfer capability |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25000619 |
| work_keys_str_mv | AT liaofeiyin experimentalstudyontheheattransferperformanceofvaporchamberwithuniformgradientwicks AT jiachenli experimentalstudyontheheattransferperformanceofvaporchamberwithuniformgradientwicks AT zhouwang experimentalstudyontheheattransferperformanceofvaporchamberwithuniformgradientwicks AT honglinglu experimentalstudyontheheattransferperformanceofvaporchamberwithuniformgradientwicks |