Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Experimental Study on Heat Transfer Characteristics of Thermosyphon Using Nanofluids

나노유체를 이용한 써모사이폰의 열전달 성능 특성에 관한 실험적 연구

  • Lee, Moo-Yeon (School of Mechanical Engineering, Dong-A Univ.) ;
  • Cho, Chung-Won (Thermal Management System Research Center, Korea Automotive Technology Institute) ;
  • Lee, Ho-Seong (Thermal Management System Research Center, Korea Automotive Technology Institute) ;
  • Won, Jong-Phil (Thermal Management System Research Center, Korea Automotive Technology Institute) ;
  • Lim, Taek-Kyu (Thermal Management System Research Center, Korea Automotive Technology Institute)
  • 이무연 (동아대학교 기계공학과) ;
  • 조중원 (자동차부품연구원 열제어시스템연구센터) ;
  • 이호성 (자동차부품연구원 열제어시스템연구센터) ;
  • 원종필 (자동차부품연구원 열제어시스템연구센터) ;
  • 임택규 (자동차부품연구원 열제어시스템연구센터)
  • Received : 2012.03.22
  • Accepted : 2012.08.27
  • Published : 2012.11.01
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Abstract

This study aims to experimentally investigate the heat transfer characteristics of a thermosyphon using nanofluids. A thermosyphon with three individual pipes, which share the internal volume of the evaporator section, was designed, and its performance was tested for various charge amounts, input powers of the evaporator section's heater, and concentrations of working fluids. The optimized charge amount of the thermosyphon using distilled water was 30%, and the thermal resistance of the thermosyphon with $TiO_2$ nanofluid was 18.1% lower than that with Ag nanofluid. In addition, the heat transfer performance of the thermosyphon with $TiO_2-1%$ was optimized at an input power of 300 W at the evaporator section's heater and a charge amount of 30%.

본 논문은 나노유체를 적용하여 써모사이폰 열전달 성능 특성 변화를 실험적으로 규명하는 것을 목적으로 하고 있다. 이를 위하여, 증발부 내부체적을 공유하는 3 개의 독립된 파이프를 가지는 써모사이폰을 제작하였으며 증류수, Ag 나노유체 그리고 $TiO_2$ 나노유체에 대하여 충진량, 증발부에 가해지는 입력열량 그리고 농도변화에 따른 써모사이폰 성능특성 변화를 고찰하였다. 증류수를 작동유체로 사용하는 경우 써모사이폰의 최적충진량은 30%로 결정되었고, $TiO_2$ 나노유체를 적용하는 써모사이폰 열저항이 Ag 나노유체를 적용한 경우에 비하여 평균 18.1% 감소하였다. 또한, 300W 입력열량 및 $TiO_2$ 나노유체 농도 1%에서 써모사이폰의 열전달 성능은 가장 우수하였다.

Keywords

References

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