Heat Transfer Performance of the Vapor Chamber with Spiral Support Column-Composite Wick

作     者：Zhao, Zhengang Cai, Shuiyan Li, Bo Li, Lei Luo, Chuan 

作者机构：Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming650500 China Yunnan Key Laboratory of Green Energy Electric Power Measurement Digitalization Control and Protection Yunnan Kunming650500 China Electric Power Research Institute Yunnan Power Grid Co. Ltd Kunming650217 China 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Drops 

摘      要：Inefficient heat dissipation in vapor chambers (VCs) is the major challenge in developing the vapor chamber. To study the effect of support columns on the maximum thermal power and thermal resistance of VCs, the relationship between the support column of the VC and the vapor pressure loss is analyzed. The relationship between the number of columns and the vapor channel pressure drop is obtained through numerical simulation and pressure drop test. The thermal performance test platform of the composite wick vapor chamber (CWVC) is built. The results show that the optimal filling ratios of the composite wick with three to six spiral support columns are 60%, 70%, 90%, and 70%, respectively, and the maximum thermal powers are 19.25 W, 25.61 W, 25.97 W, and 21.22 W, respectively. At power less than 24 W, SSC4-CWVC has more uniform temperature distribution and lower thermal resistance. At power over 27 W, SSC5-CWVC has the same characteristics. Besides, at 48W, the surface temperature difference of the condenser of SSC3-CWVC is 4.5℃, and the surface temperature difference between SSC4-CWVC and SSC5-CWVC is less than 3.0℃. Therefore, the SSC4-CWVC is suitable for low-power and SSC5-CWVC for higher-power applications. © 2023, The Authors. All rights reserved.