摘要: |
微通道液冷板在高功率密度元器件散热上广泛使用,对于板面温度均匀性提出了更加严格的要求。本文以提升液冷板板面温度均匀性为目的,设计了一个同侧单进口、出口的全铝材质的微通道液冷板,在热流密度为300 W的情况下,测试其使用单相水和相变工质冷却的板面平均温度均匀性分别为2 ℃以内和2.6 ℃(R236fa)。为了进一步提升温度均匀性,在此基础上提出了优化流道的方案,即单进口多出口的方案,并从仿真和实验两方面验证了优化方案的有效性,实现了使用R236fa工质相变冷却后板面的温度均匀性可以控制在2 ℃以内。 |
关键词: 高热流密度 冷却 液冷板 温度均匀性 优化 |
DOI: |
投稿时间:2020-06-17 修订日期:2020-11-21
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基金项目:国家重点研发计划(2018YFB0105404)和国家自然科学基金(51706232)资助项目。 |
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Research and Optimization of Liquid Cooling Plate for High-heat-flux Components |
Zhan Binfei,Xu Hongbo,Zhang Hainan,Leng Dongmei,Tian Changqing,Zhou Yuan |
(Key Laboratory of Space Energy Conversion Technology, Chinese Academy of Sciences;Beijing Key Laboratory of Thermal Science and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences;University of Chinese Academy of Sciences) |
Abstract: |
Fluid cooling plates are widely used in the heat dissipation of high-density components, which imposes stricter requirements for the temperature uniformity of the plate surface. In this study, to improve the temperature uniformity of the liquid-cooled plate, a liquid-cooled plate with a single inlet and single outlet was designed. Under a load of 300 W, the average temperature uniformities of the plate cooled by a single-phase water and multiple-phase-change working medium were evaluated to be within 2 ℃ and 2.6 ℃ (R236fa), respectively. To further improve the temperature uniformity, a scheme of a single inlet and multiple outlets for optimizing the flow channel was proposed. The effectiveness of the optimization scheme was verified by a simulation and experiment. The average temperature uniformity of the plate surface cooling with the R236fa working medium can be controlled to be within 2 ℃ after the optimization. |
Key words: high heat flux cooling fluid-cooling plate temperature uniformity optimization |