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A Experimental Study on the Boiling Heat Transfer Characteristics of Nanofluids by the Size and Mixing Ratio of Graphene Particle

그래핀 입자의 크기와 혼합비율이 나노유체의 비등열전달에 미치는 영향에 대한 실험적 연구

  • Park, Sung-Seek (Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Young Hun (Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Nam-Jin (Nuclear & Energy Engineering, Jeju National University)
  • 박성식 (제주대학교 에너지공학과) ;
  • 김영훈 (제주대학교 에너지공학과) ;
  • 김남진 (제주대학교 에너지공학과)
  • Received : 2015.03.17
  • Accepted : 2015.04.20
  • Published : 2015.04.30

Abstract

Boiling heat transfer characteristic is very important in the various industries such as solar thermal system, power generation, heat exchangers, cooling of high-power electronics components and cooling of nuclear reactors. Therefore, in this study, boiling heat transfer characteristics such as critical heat flux (CHF) and heat transfer coefficient under the pool boiling state were tested using graphene nanofluids. Graphene used in this study, which have the same thermal conductivity but with different sizes. The experimental results showed that the highest the CHF and boiling heat transfer coefficient increase ratio for graphene nanofluids was at the 0.01 vol.%. At the present juncture, the CHF and boiling heat transfer coefficient increase ratio of the small-sized graphene nanofluids was higher than the large-sized graphene nanofluids.

Keywords

References

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