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Investigation of moisture phase change in porous media using neutron radiography and gravimetric analysis

机译:用中子射线照相法和重量分析法研究多孔介质中的水分相变

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摘要

A new technique for observing the phase change of water vapor in an insulation material is presented. It combines neutron radiography with gravimetric analysis in order to obtain quantitative two-dimensional insight in a transient process due to a transient temperature boundary condition at one side of the insulation. The advantage of this approach is, that the neutron radiography provides high-resolution pictures while the process is slow enough to allow exposure times of nearly a minute. The article describes the experimental setup and the analysis method and shows results which will allow a future validation of transient mathematical models.
机译:提出了一种观察绝缘材料中水蒸气相变的新技术。它将中子射线照相术与重量分析相结合,以便在绝缘过程中由于绝缘体一侧的瞬态温度边界条件而在瞬态过程中获得定量的二维见解。这种方法的优点是,中子射线照相可以提供高分辨率的图像,而过程速度很慢,可以允许近一分钟的曝光时间。本文介绍了实验设置和分析方法,并显示了可用于将来验证瞬态数学模型的结果。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第24期|p.5283-5288|共6页
  • 作者单位

    Institute of Themo-Fluid Dynamics (Applied Thermodynamics), Hamburg University of Technology, 21071 Hamburg, Germany;

    rnInstitute of Themo-Fluid Dynamics (Applied Thermodynamics), Hamburg University of Technology, 21071 Hamburg, Germany;

    Physik-Department E21, James-Franck-Strasse, Technische Universitaet Miinchen, 85748 Carching, Germany;

    rnPhysik-Department E21, James-Franck-Strasse, Technische Universitaet Miinchen, 85748 Carching, Germany;

  • 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

    neutron radiography; phase change; water; experimental work;

    机译:中子射线照相;相变水;实验工作;

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