대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제27권3호
  • /
  • Pages.374-380
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  • 2003
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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냉각평판에 형성된 서리층의 물성치

Properties of the Frost Layer Formed on a Cold Flat Surface

  • 김성곤 (한양대학교 대학원 기계공학과) ;
  • 양동근 (한양대학교 대학원 기계공학과) ;
  • 이관수 (한양대학교 기계공학부)
  • 발행 : 2003.03.01
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초록

This paper proposes dimensionless correlations predicting properties of the frost layer formed on a cold flat surface. Experiments are carried out to obtain the correlations with various environmental parameters such as air temperature, air velocity, absolute humidity, and cooling plate temperature. As a result, the frost properties (frost layer thickness, density, surface temperature, thermal conductivity) are correlated as a function of Reynolds number, Fourier number, absolute humidity and non-dimensional temperature by using a dimensional analysis. The correlations agree well with the previous and our experimental data within a maximum error of 10%, and are used to predict the frost properties in the following ranges: Reynolds number of 20216 to 53763, Fourier number of 0.1962 to 2.5128, absolute humidity of 3.22 to 8.47, and non-dimensional temperature of 0.125 to 0.5.

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참고문헌

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