Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on Influence of Flow Boiling Heat Transfer on Fouling Phenomenon in Nanofluids

나노유체에서 파울링 현상이 유동 비등 열전달에 미치는 영향에 대한 연구

  • Kim, Woojoong (Department of Nuclear and Energy Engineering, Jeju National University) ;
  • Yang, Yongwoo (Department of Nuclear and Energy Engineering, Jeju National University) ;
  • Kim, Younghun (Department of Nuclear and Energy Engineering, Jeju National University) ;
  • Park, Sungseek (Jeju Institute of Quality, Korean Foundation for Quality) ;
  • Kim, Namjin (Department of Nuclear and Energy Engineering, Jeju National University)
  • 김우중 (제주대학교 에너지공학과) ;
  • 양용우 (제주대학교 에너지공학과) ;
  • 김영훈 (제주대학교 에너지공학과) ;
  • 박성식 (한국품질재단 제주품질연구원) ;
  • 김남진 (제주대학교 에너지공학과)
  • Received : 2015.11.02
  • Accepted : 2016.02.02
  • Published : 2016.03.10
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Abstract

A boiling heat transfer is used in various industry such as power generation systems, heat exchangers, air-conditioning and refrigerations. In the boiling heat transfer system, the critical heat flux (CHF) is the important factor, and it indicated safety of the system. It has kept up studies on the CHF enhancement. Recently, it is reported the CHF enhancement, when working fluid used the nanofluid with high thermal properties. But it could be occurred nanoflouling phenomenon from nanoparticle deposition, when nanofluid applied the heat transfer system. And, it is reported that the safety and thermal efficiency of heat transfer system could decrease. Therefore, it is compared and analyzed to the CHF and the boiling heat transfer coefficient on effect of artificial nanofouling (coating) in oxidized multi-wall carbon nanotube nanofluids. As the result, the CHF of oxidized multi-wall carbon nanofluids and the CHF of artificial nanofouling in the nanofluids increased to maximum 99.2%, 120.88%, respectively. A boiling heat transfer coefficient in nanofluid increased to maximum 24.29% higher than purewater, but artificial nanofouling decreased to maximum -7.96%.

Keywords

References

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