Journal of Advanced Marine Engineering and Technology

  • 제38권9호
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  • Pages.1032-1038
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  • 2014
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
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병렬 마이크로 채널에서 FC-72의 비등 열전달 특성

Boiling heat transfer characteristics of FC-72 in parallel micro-channels

  • Choi, Yong-Seok (Graduate School, Division of Marine Engineering, Korea Maritime and Ocean University) ;
  • Lim, Tae-Woo (Division of Marine Engineering, Korea Maritime and Ocean University) ;
  • You, Sam-Sang (Division of Mechanical and Energy Systems Engineering, Korea Maritime and Ocean University) ;
  • Kim, Hwan-Seong (Department of Logistics System Engineering, Korea Miritime and Ocean University) ;
  • Choi, Hyeung-Sik (Division of Mechanical and Energy Systems Engineering, Korea Maritime and Ocean University)
  • 투고 : 2014.09.04
  • 심사 : 2014.11.19
  • 발행 : 2014.11.30
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초록

본 연구에서는 병렬 마이크로 채널에서 FC-72의 비등 열전달 특성을 파악하기 위한 실험적 연구를 수행하였다. 병렬 마이크로 채널은 깊이 0.2 mm, 폭 0.45 mm, 길이 60 mm의 15개의 마이크로 채널로 구성되었으며, 실험은 열유속 $16.4kW/m^2$와 $25.6kW/m^2$의 조건에서 수행되었으며, 이때 질량유속 300, 400 그리고 $500kg/m^2s$의 범위에서 이루어졌다. 실험을 통해 측정된 열전달 계수는 낮은 건도에서는 건도가 증가함에 따라 급격하게 감소하며, 일정 건도 이상에서는 일정하게 유지되었다. 본 연구를 통해 마이크로 채널에서 FC-72의 비등 열전달 메커니즘을 확인하였으며, 실험에서 얻어진 열전달 계수는 열전달 계수를 예측하기 위한 기존의 상관식들과 비교 분석하였다.

In this study, an experimental study was performed to understand the boiling heat transfer characteristics of FC-72 in parallel micro-channels. The parallel micro-channels contained channels having a $0.2mm{\times}0.45mm$ [$H{\times}W$] cross section and length of 60 mm. And heat flux was varied from 16.4 to $25.6kW/m^2$ and mass fluxes from 300 to $500kg/m^2s$. The measured heat transfer coefficient was sharply decreased at lower vapor quality and then it was kept approximately constant as the vapor quality is increased. From the experimental results, the boiling heat transfer mechanism of FC-72 was confirmed and the measured heat transfer coefficient was compared and analyzed with the existing correlations to predict the heat transfer coefficient.

키워드

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  2. Heat transfer characteristic and flow pattern investigation in micro-channels during two-phase flow boiling vol.39, pp.7, 2015, https://doi.org/10.5916/jkosme.2015.39.7.696
  3. Study on flow boiling heat transfer in two-phase micro-channels heat sink vol.39, pp.7, 2015, https://doi.org/10.5916/jkosme.2015.39.7.702