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Temperature dependence of thermal resistance of a bare joint

机译:裸接点的热阻与温度的关系

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摘要

Temperature dependence of thermal resistance of a bare joint between two crossed platinum wires was measured using a quasi steady-state T-type probe in the temperature range of 100-300 K. The thermal resistance was found to decrease rapidly as the temperature increased from 100 to 200 K, then the trend slowed down, which could be explained by the temperature behaviors of the hardness and elastic modulus of platinum. Considering both the microscopic and macroscopic thermal resistances, the calculated results fitted well with the experimental data, and the obtained conductance-load exponent was also within the reasonable range.
机译:使用准稳态T型探头在100-300 K的温度范围内测量了两条交叉的铂丝之间裸露的接头的热阻的温度依赖性。发现温度从100升高时,热​​阻会迅速降低到200 K时,趋势减慢,这可以用铂的硬度和弹性模量的温度行为来解释。考虑到微观和宏观的热阻,计算结果与实验数据吻合得很好,所获得的电导-负荷指数也在合理范围内。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第24期|p.5350-5354|共5页
  • 作者单位

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;

    rnKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;

    rnKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;

    rnKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, 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

    thermal contact resistance; bare joint; temperature dependence; hardness;

    机译:热接触电阻裸露的关节温度依赖性硬度;

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