Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Measurement of liquid film thickness distribution on sprayed surfaces

스프레이가 분사되는 표면에서의 액막 두께 분포 측정

  • Tae Ho Kim (Department of Mechanical Engineering, Chungnam National University) ;
  • Myung Ho Kim (TBM Technology Team, Korea Institute of Fusion Energy) ;
  • Hyoung Kyu Cho (Department of Nuclear Engineering, Seoul National University) ;
  • Byoung Jae Kim (Department of Mechanical Engineering, Chungnam National University)
  • Received : 2023.10.20
  • Accepted : 2023.11.08
  • Published : 2023.11.30
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Abstract

Spray cooling is a method of cooling high-temperature heating elements by spraying droplets. Recently, spray cooling has been proposed for use in next-generation nuclear reactors. When droplets are sprayed onto the outer wall of a heat exchanger tube, a film boiling occurs on the outer wall. Over time, the outer wall temperature decreases, and a liquid film forms on the outer wall, and the heat exchanger outer wall is subsequently cooled by the liquid film. In this case, the liquid film thickness has a great influence on the heat removal performance. In this study, an experimental study was conducted to measure the liquid film thickness distribution in a droplet spray environment. For this purpose, a method using the electrical conductivity of the liquid was adopted.

Keywords

Acknowledgement

본 연구는 충남대학교의 연구비 지원으로 수행되었습니다.

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