Numerical Study of Flattened Miniature Heat Pipe with Hybrid Porous Wick and Double Heat Sources

Abdizadeh, G. R.; Noori, Sahar; Saeedi, Mohammad; Tajik, Hamidreza

doi:10.22034/jast.2023.400610.1154

Document Type : Original Article

Authors

¹ Aerospace Engineering Department, Amirkabir University of Technology

² Mechanical Engineering Department, Dalhousie University, Halifax,Canada

³ Satellite Research Institute, Tehran, Iran

https://doi.org/10.22034/jast.2023.400610.1154

Abstract

Designing ﬂattened miniature heat pipes (FMHPs) for electronic devices is a challenging issue due to high heat flux and limited heat dissipation space. It requires understanding the combined effects of the sintered-grooved wick structure, double heat sources, and flat thickness on heat pipes' thermal efficiency. Therefore, the aim of this study is to numerically investigate the effects of the FMHP with a hybrid wick on the thermal performance of its double heat sources acting as the CPU and GPU in notebook PCs. A transient 3D finite volume method was used to solve the governing equations and assisted boundary conditions. The cylindrical heat pipe with a 200 mm length and 6 mm outside diameter is ﬂattened into 2, 2.5, 3, and 4 mm final thicknesses (FT). The obtained results show that the final critical thicknesses with the lowest thermal resistance are 2.5 and 3 mm for hybrid and grooved wick structures, respectively. Therefore, FMHP with hybrid wicks can be flattened about 8% more. Hybrid wick structures have the best eﬀect on FMHP thermal performance at FT=2.5 mm

Keywords

20.1001.1.17352134.2023.16.2.6.3

Main Subjects

Aerodynamic

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Numerical Study of Flattened Miniature Heat Pipe with Hybrid Porous Wick and Double Heat Sources

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Volume 16, Issue 2October 2023Pages 74-85

Volume 16, Issue 2
October 2023
Pages 74-85