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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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The Convective Heat Transfer for the Flow Perpendicular to the Tube Array

튜브배열 방향과 수직한 유동에 의한 관외 대류 열전달

  • Jeon Yong-Han (Graduate School, In-ha University) ;
  • Kim Jong-Yoon (Graduate School, In-ha University) ;
  • Kim Nam-Jin (Department of Nuclear & Energy Engineering, Cheju National University) ;
  • Kim Chong-Bo (Department of Mechanical Engineering, In-ha University)
  • Published : 2006.08.01
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Abstract

The convective heat transfer on the outer surface of tube arrays perpendicular to the flow direction was experimentally investigated. The test sections which include the aligned and staggered arrangements were made and the local heat transfer coefficients on the outer surface of the tube were measured after the flow has been fully developed. The results showed that the local heat transfer coefficients of the staggered arrangement, which has transverse pitch of 0.075 m and longitudinal pitch of 0.08 m, were about 15% greater than that of the aligned arrangement. Also, the overall mean Nusselt number of the former was greater than that of the latter. It is verified that the results obtained by using the simulation show the same tendency with those of experiment.

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References

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