International Journal of Air-Conditioning and Refrigeration

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Effect of Flow Inlet or Outlet Direction on Air-Water Two-Phase Distribution in a Parallel Flow Heat Exchanger Header

  • Kim, Nae-Hyun (Department of Mechanical Engineering, University of Incheon) ;
  • Kim, Do-Young (Department of Mechanical Engineering, University of Incheon) ;
  • Cho, Jin-Pyo (Department of Mechanical Engineering, University of Incheon) ;
  • Kim, Jung-Oh (Department of Mechanical Engineering, University of Incheon) ;
  • Park, Tae-Kyun (Department of Mechanical Engineering, University of Incheon)
  • Published : 2008.06.30
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Abstract

The air and water flow distributions are experimentally studied for a round header - ten flat tube configuration. Three different inlet orientation modes (parallel, normal, vertical) were investigated. Tests were conducted with downward flow configuration for the mass flux from 70 to $130kg/m^2s$, quality from 0.2 to 0.6, non-dimensional protrusion depth (h/D) from 0,0 to 0.5. It is shown that, for almost all the test conditions, vertical inlet yielded the best flow distribution, followed by normal and parallel inlet. Possible explanation is provided using flow visualization results.

Keywords

References

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