Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick
In a two-phase heat transfer device, achieving a high capillarity of the wick while reducing flow resistance within a limited space becomes the key to improving the heat dissipation performance. As a commonly used wick structure, mesh is widely employed because of its high permeability. However, ach...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/16/14/5348 |
| _version_ | 1797589431107977216 |
|---|---|
| author | Jia-Li Luo Fan-Bin Zhao Mou Xu Dong-Chuan Mo Shu-Shen Lyu |
| author_facet | Jia-Li Luo Fan-Bin Zhao Mou Xu Dong-Chuan Mo Shu-Shen Lyu |
| author_sort | Jia-Li Luo |
| collection | DOAJ |
| description | In a two-phase heat transfer device, achieving a high capillarity of the wick while reducing flow resistance within a limited space becomes the key to improving the heat dissipation performance. As a commonly used wick structure, mesh is widely employed because of its high permeability. However, achieving the desired capillary performance often requires multiple layers to be superimposed to ensure an adequate capillary, resulting in an increased thickness of the wick. In this study, an ultra-thin biomimetic copper forest structural modification of copper mesh was performed using an electrochemical deposition to solve the contradiction between the permeability and the capillary. The experiments were conducted on a copper mesh to investigate the effects of various conditions on their morphology and capillary performance. The results indicate that the capillary performance of the modified copper mesh improves with a longer deposition time. The capillary pressure drops can reach up to 1400 Pa when using ethanol as the working fluid. Furthermore, the modified copper mesh demonstrates a capillary performance value (Δ<i>P<sub>c</sub>·K</i>) of 8.44 × 10<sup>−8</sup> N, which is 1.7 times higher than that of the unmodified samples. Notably, this enhanced performance is achieved with a thickness of only 142 μm. The capillary limit can reach up to 45 W when the modified copper mesh is only 180 μm. Microscopic flow analysis reveals that the copper forest modified structure maintains the original high permeability of the copper mesh while providing a greater capillary force, thereby enhancing the overall flow characteristics. |
| first_indexed | 2024-03-11T01:07:33Z |
| format | Article |
| id | doaj.art-3ccc36fbf41b4634b15ace296d287d99 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T01:07:33Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3ccc36fbf41b4634b15ace296d287d992023-11-18T19:09:02ZengMDPI AGEnergies1996-10732023-07-011614534810.3390/en16145348Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh WickJia-Li Luo0Fan-Bin Zhao1Mou Xu2Dong-Chuan Mo3Shu-Shen Lyu4School of Materials, Sun Yat-sen University, Shenzhen 518107, ChinaGuangdong Engineering Technology Research Centre for Advanced Thermal Control Material and System Integration (ATCMSI), Guangzhou 518107, ChinaSchool of Materials, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Materials, Sun Yat-sen University, Shenzhen 518107, ChinaSchool of Materials, Sun Yat-sen University, Shenzhen 518107, ChinaIn a two-phase heat transfer device, achieving a high capillarity of the wick while reducing flow resistance within a limited space becomes the key to improving the heat dissipation performance. As a commonly used wick structure, mesh is widely employed because of its high permeability. However, achieving the desired capillary performance often requires multiple layers to be superimposed to ensure an adequate capillary, resulting in an increased thickness of the wick. In this study, an ultra-thin biomimetic copper forest structural modification of copper mesh was performed using an electrochemical deposition to solve the contradiction between the permeability and the capillary. The experiments were conducted on a copper mesh to investigate the effects of various conditions on their morphology and capillary performance. The results indicate that the capillary performance of the modified copper mesh improves with a longer deposition time. The capillary pressure drops can reach up to 1400 Pa when using ethanol as the working fluid. Furthermore, the modified copper mesh demonstrates a capillary performance value (Δ<i>P<sub>c</sub>·K</i>) of 8.44 × 10<sup>−8</sup> N, which is 1.7 times higher than that of the unmodified samples. Notably, this enhanced performance is achieved with a thickness of only 142 μm. The capillary limit can reach up to 45 W when the modified copper mesh is only 180 μm. Microscopic flow analysis reveals that the copper forest modified structure maintains the original high permeability of the copper mesh while providing a greater capillary force, thereby enhancing the overall flow characteristics.https://www.mdpi.com/1996-1073/16/14/5348biomimetic copper forestcapillary flowcapillary performance valuepermeability |
| spellingShingle | Jia-Li Luo Fan-Bin Zhao Mou Xu Dong-Chuan Mo Shu-Shen Lyu Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick Energies biomimetic copper forest capillary flow capillary performance value permeability |
| title | Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick |
| title_full | Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick |
| title_fullStr | Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick |
| title_full_unstemmed | Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick |
| title_short | Biomimetic Copper Forest Structural Modification Enhances the Capillary Flow Characteristics of the Copper Mesh Wick |
| title_sort | biomimetic copper forest structural modification enhances the capillary flow characteristics of the copper mesh wick |
| topic | biomimetic copper forest capillary flow capillary performance value permeability |
| url | https://www.mdpi.com/1996-1073/16/14/5348 |
| work_keys_str_mv | AT jialiluo biomimeticcopperforeststructuralmodificationenhancesthecapillaryflowcharacteristicsofthecoppermeshwick AT fanbinzhao biomimeticcopperforeststructuralmodificationenhancesthecapillaryflowcharacteristicsofthecoppermeshwick AT mouxu biomimeticcopperforeststructuralmodificationenhancesthecapillaryflowcharacteristicsofthecoppermeshwick AT dongchuanmo biomimeticcopperforeststructuralmodificationenhancesthecapillaryflowcharacteristicsofthecoppermeshwick AT shushenlyu biomimeticcopperforeststructuralmodificationenhancesthecapillaryflowcharacteristicsofthecoppermeshwick |