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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Effects of the Corrugated Tubes on Pressure Drop in Concentric Annuli

환형관에서 파형튜브가 압력강하에 미치는 효과

  • 안수환 (경상대학교 수송기계공학부 해양산업연구소) ;
  • 손강필 (경상대학교 기관공학과 대학원)
  • Published : 2001.09.01
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Abstract

The present paper presents the experimental results of pressure drip of water flow in annuli with spirally corrugated inner tubes in the turbulent flow regime. To understand the underlying physical phenomena responsible for heat transfer enhancement, pressure drop data documented elsewhere are combined to compare with those obtained from the present experiment for the Reynolds numbers of 1,000 to 8,000. Friction factors were found to be functions of trough depth, pitch and angle, and the annulus radius ratio. Friction factor increases in the spirally fluted tubes were larger than those in the corrugated tubes.

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References

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