Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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A Study on Heat Transfer Characteristics of the Outside Surface of Ambient Vaporizer

액화가스용 대기식 기화기의 외측 열전달 특성에 관한 연구

  • Kang, Seung Mo (Dept. of Fire-fighting Eng., Pukyong National Univ.) ;
  • Seo, Dongmin (Dept. of Mech. Design Eng., Chonbuk National Univ.) ;
  • Ko, Dong Guk (Dept. of Mech. Eng., Chonbuk National Univ.) ;
  • Choi, Jun-Ho (Dept. of Fire-fighting Eng., Pukyong National Univ.) ;
  • Park, Woe-Chul (Dept. of Fire-fighting Eng., Pukyong National Univ.) ;
  • Im, Ik-Tae (Dept. of Mech. Design Eng., Chonbuk National Univ.)
  • 강승모 (부경대학교 소방공학과) ;
  • 서동민 (전북대학교 기계설계공학부) ;
  • 고동국 (전북대학교 기계공학과) ;
  • 최준호 (부경대학교 소방공학과) ;
  • 박외철 (부경대학교 소방공학과) ;
  • 임익태 (전북대학교 기계설계공학부)
  • Received : 2017.10.17
  • Accepted : 2017.12.22
  • Published : 2017.12.31
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Abstract

This paper analyzed the heat transfer characteristics on the outer surface of the ambient air vaporizer which received the heat from the air through natural convection by using numerical and experimental methods. The working fluid was a liquid nitrogen. The experimental variables were the length (2,000 mm, 1,800 mm, 1,600 mm) and width of the vaporizer fin and the fluid flow ($6.7m^3/h$, $7.1m^3/h$, $7.5m^3/h$). Based on the temperature data from the experiments, the heat transfer coefficient was calculated. Numerical analyses were also conducted in order to find the heat transfer coefficient for the range of Nusselt number which was difficult to get the data from experiments. The correlation equation between Nusselt number and Rayleigh number were suggested using both the experimental and numerical data.

Keywords

References

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