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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Analysis of Pressure Drop for Combining Junctions in Gas-Liquid Two-Phase Flows

기액 2상 유동에서 합지관에서의 압력강하에 대한 해석

  • 김철환 (LG전자 생활시스템연구소) ;
  • 하삼철 (LG전자 생활시스템연구소) ;
  • 김은필 (부경대학교 기계공학부) ;
  • 김경천 (부산대학교 기계공학부)
  • Published : 2000.09.01
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Abstract

An experimental study and a modeling are peformed to investigate the pressure drop of combining junctions in two-phase flows. Experiments on tripod geometry used in a condenser or an evaporator, are conducted with inlet mass fluxes from 200 to$ 400 kg/m^2$s, and pipe diameters of 7 m and 9.52 m. The working fluid is R22. The result shows that the pressure drop increases as the quality does, but the effect of the increase of the pressure decreases when the diameter of a pipe increases. When the mass flux increases, the pressure drop linearly does. Furthermore, when the pipe diameter decreases, the pressure drop has a quadratic increase.

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References

  1. Int. J. Multiphase Flow v.10 The Analysis of Phase Separation Phenomena in Branching Conducts Saba, N.;Lahey, R. Jr.
  2. Nuclear Engineering and Design v.95 Current Understanding of Phase Separation Mechanisms on Branching Conducts Lahey, R. Jr
  3. Int. J. Multiphase Flow v.14 Steam-Water Annular Flow in a Horizontal Dividing T-Junction Ballyk, J. D.;Shoukri, M.;Chan, A. M. C.
  4. Proceedings of the SAREK '2000 Summer Annual Conference A Study on the Dividing Two-Phase Flow in a Vertical Rectangular Mini-Channel with a Horizontal Branch Lee, J. K.;Lee, S. Y.;Lee, H. J.
  5. Two-Phase Flow in a T-Junction with a Horizontal Inlet v.12 Reimann, J.;Seeger, W.
  6. Int. J. Multiphase Flow v.20 Predictive Methods for Two-Phase Flow Pressure Loss in Tee Junctions with Combining Conducts Schmidt, H.;Loth, R.
  7. ACRC Preject 45 Two-Phase Modeling of Refrigerant Mixtures in the Annular/Stratified Flow Regimes Hurlburt, E.;Newell, T. A.
  8. Int. J. Multiphase Flow Optical Measurement of Liquid Film Thickness and Wave Velocity in Liquid Film Flows Hurlburt, E.;Newell, T. A.
  9. Estimation of Steady State Steam Void Fraction by Means of the Principle of Minimum Entropy Production v.86 Zivi, S. M.