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首页> 外文期刊>Energy Conversion & Management >Thermal performance of a novel porous crack composite wick heat pipe
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Thermal performance of a novel porous crack composite wick heat pipe

机译：新型多孔裂纹复合芯吸热管的热性能

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摘要

A novel porous crack composite wick flattened heat pipe (PCHP) has been developed for electronic device cooling. PCHP was fabricated from grooved-sintered wick cylindrical heat pipe (CSHP) by phase change flattening technology. The composite wick was composed of porous sintered powder structure and axial micro-crack channels. The crack channels of composite wick were characterized and the calculation models of thermal resistance and capillary limit of PCHP were built. An experimental setup was used to test thermal resistance and heat transfer limit. The results showed that the parameters affecting thermal resistance from the most significant to the least one were wick thickness, powder diameter, flattened height, and tear number. The optimal wick thickness of PCHP for the maximum heat transfer limit was about 0.45 mm at flattened height of 3 mm. Heat transfer limit of PCHP increased with powder diameter while decrease of powder diameter could enhance anti-gravity ability of PCHP. Heat transfer limit of PCHP increased with flattened height. The effect of tear number on thermal resistance and heat transfer limit of PCHP could be neglected.
机译：新型多孔裂纹复合芯吸平热管（PCHP）已开发用于电子设备冷却。 PCHP是通过相变扁平化技术从沟槽式烧结芯吸管圆柱热管（CSHP）制成的。复合芯由多孔烧结粉末结构和轴向微裂纹通道组成。表征了复合芯的裂纹通道，建立了PCHP的热阻和毛细极限计算模型。实验设置用于测试热阻和传热极限。结果表明，影响热阻的参数从最高到最低是灯芯厚度，粉末直径，扁平高度和撕裂数。对于最大传热极限，最佳的PCHP芯吸厚度为3 mm的扁平高度，约为0.45 mm。 PCHP的传热极限随粉末直径的增加而增加，而减小粉末直径可以增强PCHP的抗重力能力。 PCHP的传热极限随高度的增加而增加。撕裂数对PCHP的热阻和传热极限的影响可以忽略。

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  • 来源
    《Energy Conversion & Management》 |2014年第5期|10-18|共9页
  • 作者

    Lelun Jiang; Jintian Ling; Linzhen Jiang; Yong Tang; Yan Li; Wei Zhou; Jinwu Gao;

  • 作者单位

    Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Engineering, Sun Yat-sen University, Guangzhou 510006, PR China;

    Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Engineering, Sun Yat-sen University, Guangzhou 510006, PR China;

    School of Foreign Studies, Yiwu Industrial and Commercial College, Yiwu 322000, PR China;

    Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes, South China University of Technology, Guangzhou 510640, PR China;

    Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Engineering, Sun Yat-sen University, Guangzhou 510006, PR China;

    Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Engineering, Sun Yat-sen University, Guangzhou 510006, PR China;

    Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province, School of Engineering, Sun Yat-sen University, Guangzhou 510006, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composite wick; Crack; Heat pipe; Thermal resistance; Heat transfer limit;

    机译：复合灯芯;裂纹;热管;热阻;传热极限;

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