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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Numerical Study on the Heat Transfer Performance of Single-Tube Annular Baffle System

단관 환형배플 시스템의 전열성능에 대한 수치해석

  • Hong, Jeong-Ah (Dept. of Mechanical Engineering, Kongju National University) ;
  • Jun, Yong-Du (Dept. of Mechanical Engineering, Kongju National University) ;
  • Lee, Kum-Bae (Dept. of Mechanical Engineering, Kongju National University)
  • 홍정아 (공주대학교 기계공학과) ;
  • 전용두 (공주대학교 기계공학과) ;
  • 이금배 (공주대학교 기계공학과)
  • Received : 2012.05.02
  • Published : 2012.08.10
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Abstract

A new baffle configuration, an annular baffles, are considered in the present study as an alternative to reduce the excessive pressure drop associated with the conventional segmental ones in typical operating conditions. The heat transfer and pressure drops are numerically simulated for a single tube shell-and-tube model and compared against the conventional-baffle cases. Baffle blockage ratio and number of baffles are considered as the major variables for the present study specifying a fixed baffle spacing. It is found that the heat transfer increases 1.4~2.2 times without significant pressure loss compared to the bare tube cases and the goodness factor increases 1.35 times compared to the conventional-baffle model.

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References

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