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中南大学学报(自然科学版)

Journal of Central South University

第52卷    第1期    总第317期    2021年1月

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文章编号:1672-7207(2021)01-0267-09
轨道交通车辆风冷散热器传热优化研究
宋郭蒙,王雄,黄南,陈燕平,窦泽春,吴智勇

(中车株洲电力机车研究所有限公司,湖南 株洲,412000)

摘 要: 翅片散热器的散热效率很大程度上受材料热导率限制,为进一步提高翅片散热器的散热能力,基于均温热管、相变抑制(PCI)、均温板(VC)以及3D相变等散热技术,从传热方式上对散热器的翅片侧和热源侧分别进行优化;对优化后的散热器样机分别进行测试,并与当前在用的翅片散热器进行对比。研究结果表明:对散热器热源侧和翅片侧的优化均有效提升了散热效率,降低了散热器温升,并提高了均温性,且对散热器热源侧的优化比对翅片侧的优化效果更好。结合翅片侧和热源侧的优化特点,对散热器整体进行优化所得的3D相变散热器性能最优,比传统翅片散热器的温升降低了约65%,温差降低了约55%。

 

关键词: 翅片散热器;均温热管;均温板;相变抑制;3D相变散热器

Research on heat transfer optimization of air-cooling heatsink for rail transit vehicles
SONG Guomeng, WANG Xiong, HUANG Nan, CHEN Yanping, DOU Zechun, WU Zhiyong

CRRC Zhuzhou Institute Co. Ltd., Zhuzhou 412000, China

Abstract:The heat dissipation efficiency is severely limited by the thermal conductivity of the material. In order to optimize the cooling capacity of the finned heatsink, the performances of the heatsink for the fin side and the heat source side were optimized separately by heat transfer methods based on the heat pipe, phase change inhibition(PCI), vapor chamber(VC), and 3D composite phase change technology. The thermal performance of the heatsink prototypes was tested and compared with that of the traditional finned heatsink. The results show that optimizations of both the fin side and heat side reduce the temperature rise of the heatsink, and promote the thermal homogeneity. And the heatsink with heat source side optimized has better thermal performance than the heatsink with fin side optimized. The 3D composite phase change heatsink has the best thermal performance, whose temperature rise is 65% lower than that of the finned heatsink, with the temperature difference decreased by 55% at the same time.

 

Key words: finned heatsink; thermal homogeneity heat pipe; vapor chamber(VC); phase change inhibition(PCI); 3D composite phase change heatsink

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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