Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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A Study on the Evaporation Characteristics of Water or Nanofluid Droplets on a Heated Surface

물과 나노유체 액적의 고온 벽면에서의 증발 특성에 관한 연구

  • 김진한 (전남대학교 기계공학부) ;
  • 이경재 (전남대학교 기계공학부) ;
  • 정선욱 (전남대학교 기계공학부) ;
  • 강보선 (전남대학교 기계공학부)
  • Received : 2016.10.17
  • Accepted : 2016.11.23
  • Published : 2016.12.30
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Abstract

In this study, the evaporation characteristics of water or nanofluid droplets on a heated surface was investigated by visualization of the evaporation process and evaluation of the heat transfer coefficient using the droplet temperature measured. The evaporation characteristics was compared between water and nanofluid droplets and the effects of the mass ratio of nanofluid and the inclination of heated surface were analyzed. The heat transfer rate of nanofluid droplet was higher than that of water droplet. The heat transfer coefficient was increased with the increase of the mass ratio of nanofluid. The effect of the inclination of heated surface was much higher than that of fluid type used, which indicates that the inclination of heated surface should be considered as one of influential parameters in the spray cooling process.

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References

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