유체기계공업학회:학술대회논문집
- 유체기계공업학회 2005년도 연구개발 발표회 논문집
- /
- Pages.759-764
- /
- 2005
연료전지 수소 재순환 시스템의 유동해석
Flow analysis of the Hydrogen Recirculation System for Fuel Cells
초록
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.
키워드