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Vacuum insulation properties of phenolic foam

机译：酚醛泡沫的真空绝热性能

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摘要

Characteristic properties of phenolic foam as the interstitial material of a vacuum insulation panel are investigated experimentally. For the measurement of effective thermal conductivity, a vacuum guarded hot plate (VGHP) apparatus is used and the conductivity is measured at various vacuum levels. Radiative properties are found using a Fourier transform infrared spectroscopy (FT-IR) device. Solid conductivity is estimated using the porosity of the foam. Effective thermal conductivity at high level of vacuum is measured to be 5 mW/m K which is sum of solid conductivity (2.56 mW/m K) and radiative conductivity (2.44 mW/m K) with 5% of measurement uncertainty. The pore size of the foam is estimated to be 260 μm using rarefied gas conduction theory. This ensures insulation performance of phenolic foam up to about 10~(-3)atm. Other practical characteristics of phenolic foam as the VIP core material are also discussed.
机译：实验研究了酚醛泡沫作为真空隔热板间隙材料的特性。为了测量有效导热率，使用了真空保护热板（VGHP）设备，并在各种真空度下测量了导热率。使用傅立叶变换红外光谱（FT-IR）装置可以找到辐射特性。使用泡沫的孔隙率估算固体电导率。高真空下的有效热导率经测量为5 mW / m K，这是固体电导率（2.56 mW / m K）和辐射电导率（2.44 mW / m K）的总和，测量不确定度为5％。根据稀有气体传导理论，泡沫的孔径估计为260μm。这确保了酚醛泡沫的绝热性能高达约10〜（-3）atm。还讨论了酚醛泡沫作为VIP芯材的其他实用特性。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第20期|p.5343-5349|共7页
  • 作者

    Jongmin Kim; Jae-Hyug Lee; Tae-Ho Song;

  • 作者单位

    School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology, Guseong-dong 373-1, Ymeong-gu, Daejeon. Republic of Korea;

    School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology, Guseong-dong 373-1, Ymeong-gu, Daejeon. Republic of Korea;

    School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology, Guseong-dong 373-1, Ymeong-gu, Daejeon. Republic of Korea;

  • 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

    phenolic foam; vacuum insulation panel; guarded hot plate; thermal conductivity;

    机译：酚醛泡沫真空隔热板;防护热板导热系数;

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