Numerical Simulation, Machining and Testing of a Phase Change Heat Sink for High Power LEDs

Xiang, Jianhua; Zheng, Haoxing; Wang, Yipin; Zhang, Chunliang; Zhou, Chao; Chen, Conggui

doi:10.3390/ma12132193

Cited by 2 publications

(2 citation statements)

References 22 publications

(22 reference statements)

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“…Heat pipes are widely used in mechanical, electrical and energy industries as a thermal management device transferring latent heat through evaporation and condensation [1][2][3][4]. Most current heat pipes have simple porous structure or simple groove geometry structure, as they are manufactured powder sintering or extrusion [2,[5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The development of a high-performance Ni-superalloy additively manufactured heat pipe

Essa

Carr

et al. 2022

Adv. Manuf.

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Additively manufacturing (AM) has been used to manufacture fine structures with structured/engineered porosity in heat management devices. In this study, laser powder bed fusion (LPBF) was used to manufacture a high-performance Ni-superalloy heat pipe, through tailoring LPBF process parameters to fabricate thin wall and micro-channel. By using novel laser scanning strategies, wick structure heat pipes with maximised surface-area-to-volume ratio, fine features size around 100 µm, and controlled porosity were successfully fabricated. Microscopy and X-ray microtomography (micro-CT) were used to investigate the 3D structure of the void space within the pipe. Wick test results showed that most of the heat pipes made by LPBF had better performance than the conventionally manufactured pipes. This study also investigated the influences of the process parameters on the porosity volume fraction and the feature size. The results showed that LPBF process could fabricate thin structure due to the change of melt pool contact angle. The relationship between process parameters and bead size reported in this study could help design and manufacture heat pipe with complex fine structure.

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Section: Introductionmentioning

confidence: 99%

The development of a high-performance Ni-superalloy additively manufactured heat pipe

Essa

Carr

et al. 2022

Adv. Manuf.

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“…Heat pipes are widely used in the fields of mechanical and electrical industries [1,2]. They mainly contain a metal shell, wick structures, phase-change chamber, and working fluid.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performances Investigation of Anti-Gravity Heat Pipe with Tapering Phase-Change Chamber

et al. 2020

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The objective of this study was to fabricate anti-gravity heat pipes with a tapering column phase-change chamber and changeable cross-sectional wick structure. The thermal performances of the anti-gravity heat pipes were experimentally investigated. Results show that the thermal resistances of the different heat pipes are less than 0.03 °C/W, except for the sharp conical chamber heat pipe under anti-gravity heating conditions (0.121 °C/W). Start-up times of different types of heat pipes are similar and the temperatures are steady within 3 to 5 min. The heat transfer ability of a conical chamber is always better than that of a cylindrical one. The performance of the sharp conical chamber heat pipe is the best under gravity assistance heating conditions. Contrarily, the blunt conical chamber heat pipe has the best heat transfer ability under anti-gravity heating conditions. Moreover, the heat transfer capability of the blunt conical chamber heat pipe is unaffected by the relative position of the heat and cold sources, which is suitable for constant temperature cooling applications with frequent switching of the heat and cold sources.

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Numerical Simulation, Machining and Testing of a Phase Change Heat Sink for High Power LEDs

Cited by 2 publications

References 22 publications

The development of a high-performance Ni-superalloy additively manufactured heat pipe

The development of a high-performance Ni-superalloy additively manufactured heat pipe

Thermal Performances Investigation of Anti-Gravity Heat Pipe with Tapering Phase-Change Chamber

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