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

  • 제18권8호
  • /
  • Pages.656-663
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  • 2006
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

튜브배열 방향과 수직한 유동에 의한 관외 대류 열전달

The Convective Heat Transfer for the Flow Perpendicular to the Tube Array

  • 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)
  • 발행 : 2006.08.01
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초록

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.

키워드

참고문헌

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  2. Martin, A. R. and Saltiel, C., 1988, Frictionlosses and convective heat transfer in sparse, periodic cylinder arrays in cross flow, Int. J. Heat Mass Transfer, Vol. 41, pp.2383-2397 https://doi.org/10.1016/S0017-9310(97)00300-1
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  4. Debusschere, B., 1998, Measurement of friction, heat transfer, and mass transfer in a severely outgassing tube banks, Int. J. Heat and Fluid Flow, pp. 3015-3024
  5. Giedt, W. H., 1949, Local Nusselt number for airflow normal to a circular, Trans, ASME, Vol. 71, pp.375-380