Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Optimum Header Design for the Uniform Distribution of Two Phase Flow in the Evaporator

증발기 내 이상유동의 균열 분배를 위한 헤더 형상의 최적화

  • 최치웅 (포항공과대학교 대학원 기계공학과) ;
  • 김무환 (포항공과대학교 기계공학과) ;
  • 조남수 (LG전자 DA연구소) ;
  • 이장석 (LG전자 DA연구소) ;
  • 이장호 (국립군산대학교 기계공학부)
  • Published : 2006.08.01
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Abstract

Several types of different header designs are numerically studied to have uniform distribution of two phase flow in the evaporator header having multi-channels. The different geometries include the inlet tube position into the header and the width of header. In the numerical calculation, two types of two-phase model such as homogeneous model and VOF(Volume Of Fluid) model are employed. In this study, the mal-distribution number, $M_d$, is newly defined to evaluate the averaged level of the flow distribution in the whole passes of the evaporator. As results, two phase flow in the header can be visualized using post-processing of numerical results. Furthermore, the optimum position of the inlet tube into the header and the width of header can be proposed for the better distribution of refrigerant(R-134a) flow.

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References

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