유체기계공업학회:학술대회논문집

Korean Society for Fluid machinery (한국유체기계학회)
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Flow analysis of the Hydrogen Recirculation System for Fuel Cells

연료전지 수소 재순환 시스템의 유동해석

  • 김재춘 (고려대학교 대학원 기계공학과) ;
  • 이용택 (고려대학교 대학원 기계공학과) ;
  • 정진택 (고려대학교 기계공학과) ;
  • 김용찬 (고려대학교 기계공학과) ;
  • 황인철 (현대 기아 연구개발본부 연료전지 개발팀)
  • Published : 2005.12.01
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Abstract

In this paper, numerical analysis of hydrogen recycle system has been conducted in order to enhance the efficiency of automotive fuel cell. Generally, the excess hydrogen is provided in the automotive fuel cell. Since the non-reaction hydrogen reduces automotive fuel cell efficiency, reuse of the non-reaction hydrogen can be helpful to improve the fuel cell performance. In case of PEM FC, the water vapor is provided to hydrogen from the cathode so that the mixture experiences phase change depending on the changes of pressure and temperature. The internal flow of the mixture in the hydrogen recirculation system of fuel cell was investigated for real flow conditions. The variation of performance, properties and mass fractions of mixture, hydrogen and water-vapor were investigated. This study was performed based on 80KW level automotive fuel cell's recycling system.

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