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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Numerical Study for Heat Transfer Characteristics Varying Cross-Sectional Shape of a Tube

관 단면형상 변화에 따른 열전달 특성에 관한 수치해석적 연구

  • Park, Hun-Chae (Environmental and Energy Systems Research Division, Korea Institute of Machinery and Materials) ;
  • Choi, Hang-Seok (Department of Environmental Engineering, Yonsei University) ;
  • Kim, Seock-Joon (Environmental and Energy Systems Research Division, Korea Institute of Machinery and Materials)
  • 박훈채 (한국기계연구원 환경.에너지기계연구본부) ;
  • 최항석 (연세대학교 환경공학부) ;
  • 김석준 (한국기계연구원 환경.에너지기계연구본부)
  • Received : 2012.04.07
  • Published : 2012.07.10
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Abstract

Numerical study has been carried out to investigate heat transfer and pressure drop characteristics for streamlined shape tubes. The flow and thermal fields are investigated with varying diameter ratio of the tube ranging from 0.4 to 2.5 and Reynolds number ranging from 10,000 to 30,000. The results show that heat transfer per unit fan power is maximum at $D_2/D_1=0.8$. Furthermore, the heat transfer per unit fan power of streamlined shape tubes was compared with circular tube. The heat transfer per unit fan power of streamlined shape tube was larger than that of circular tube.

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References

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