Journal of Welding and Joining

  • 제21권7호
  • /
  • Pages.65-70
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  • 2003
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  • 2466-2232(pISSN)
  • /
  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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열 방사율 측정시 표면거칠기의 영향

The Effect of Surface Roughness on Measuring Thermal Emissivity

  • 오기수 (단국대학교 공과대학 기계공학과) ;
  • 배신철 (단국대학교 공과대학 기계공학과)
  • 발행 : 2003.12.01
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초록

Thermal emissivity is generally affected by surface situation of material such as roughness. In this study, the effect of surface roughness on measuring thermal emissivity is experimented. And emissivity measurement method and equipment using hemisperical mirror is also reviewed. As the result of this research, thermal emissivity increased as long as increasing surface roughness. So, surface roughness is a essential check point when we measure the emissivity.

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참고문헌

  1. Thermal Radiation Heat Transfer Robert Siegel;John R. Howell
  2. J. C. Richmond Measurement of Thermal RadiationProperties of Material, Compendium of πlermophysicalProperties Measurement Methods , Survey ofMeasurement Techniques 1(1984) , 37-42
  3. Survey of Measurement Techniques v.1 Measurement of Thermal Radiation Properties of Material. Compendium of Thermophysical Properties Measurement Methods J.C.Richmond
  4. Proc. 8th Symposium on Thermophysical Properties v.2 A Hemispherical Mirror Method for the Measurement of Directional Spectral Emissivity of Diffuse Opaque Surface A.Ono
  5. Int. J. Thermophysics v.7 Evaluation of the Effective Emissivity of Reference Source for the Radiation Emissivity Measurement A.Ono