Heat transfer enhancement of the ultra-thin flat heat pipe integrated with copper-fiber bundle wicks

Ming, Tingzhen; Li, Zhiyong; Zhao, Sitong; Zhi, Congcong; Liu, Dongcheng; Shi, Chuanjie; Yuan, Yanping; Tan, Gangfeng; Wu, Yongjia

doi:10.1016/j.applthermaleng.2023.121676

Cited by 7 publications

(1 citation statement)

References 67 publications

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“…UTHPs are usually made by first manufacturing round heat pipes with ultra-thin walls, and then processing them by heating and flattening. There has been much research on UTHPs [13,14]. Zhou et al [15] developed an innovative UTHP with a double-hole spiral-woven mesh (SWM), the results show that the thickness and maximum heat transfer performance of the UTHP are 1.1 mm and 24 W, respectively.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Ultra-Thin Vapor Chamber with Composite Wick for Electronics Thermal Management

Zhang,

Huang,

Bai

et al. 2024

Micromachines

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Ultra-thin vapor chambers (UTVCs) are widely used to cool high-power electronics due to their excellent thermal conductivity. In this study, a UTVC of 82 mm × 58 mm × 0.39 mm with composite wick was prepared. The composite wick is composed of two layers of copper mesh and multiple spiral-woven meshes (SWMs), and the composite wick was applied in UTVC to improve liquid replenishment performance and temperature uniformity. Furthermore, the thermal performance of UTVCs with different support column diameters, filling ratios (FRs), and SWM structures was experimentally studied. The results found that the equivalent thermal conductivity (ETC) decreases as the diameter of the support column increases; the UTVC with 0.5 mm support column diameter has the highest ETC, at 3473 W/(m·K). Then, the effect of FR on the heat transfer performance of UTVCs with SWM numbers of 0, 1, 2, and 3 (0 SWMs, 1 SWM, 2 SWMs, 3 SWMs) is consistent, the 30% FR UTVC with 3 SWMs having the highest ETC, at 3837 W/(m·K). Finally, the increased number of SWMs can significantly improve the ultimate power of the UTVCs, the UTVC with 3 SWMs having the highest ultimate power, at 26 W. The above experimental studies indicate that the designed and manufactured UTVCs have great potential advantages in thermal dissipation for electronics.

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Section: Introductionmentioning

confidence: 99%