한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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연료전지 채널 내 균일한 유량분배를 위한 연료전지 스택의 매니폴드 디자인 최적화 연구

Optimizing the Manifold Design of a Fuel Cell Stack for Uniform Distribution of Reactant Gases within Fuel Cell Channels

  • 조아래 (인하대학교 대학원 기계공학과) ;
  • 강경문 (인하대학교 대학원 기계공학과) ;
  • 오성진 ((주)퓨얼셀 파워) ;
  • 주현철 (인하대학교 기계공학부)
  • 투고 : 2012.03.15
  • 심사 : 2012.06.12
  • 발행 : 2012.10.01
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초록

The main function of fuel cell manifold is to render reactants distribution as uniform as possible into a fuel cell stack. The purpose of this study is to numerically investigate the effects of stack manifold design on reactants distribution within a fuel cell stack. Four manifold designs with different manifold entrance shapes (expansion or diffuser) and different values of the extra width between the cell outer channel and manifold side wall are considered and applied to the fuel cell stack consisting of 50 cells. Since the fuel cell stack geometry involves several millions of grid points for numerical calculations, a parallel computing methodology is employed to substantially reduce the computational time and overcome the memory requirement. The numerical simulations are carried out and calculated results clearly demonstrate that both the manifold entrance shape and extra width have a substantial influence on manifold performance, controlling the degree of flow separation and entrance length for fully developed flow in the manifold channel. Finally, we suggest the optimum design of fuel cell manifold based on the simulation results.

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참고문헌

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