Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Numerical Investigation of Effects of Methanol Concentration Fluctuation in Active-type Direct Methanol Fuel Cell (DMFC) Systems

액티브형 직접메탄올연료전지 시스템의 메탄올 농도 변동이 성능에 미치는 영향성에 대한 수치적 연구

  • Gwak, Geonhui (School of Mechanical Engineering, Inha, University) ;
  • Ko, Johan (School of Mechanical Engineering, Inha, University) ;
  • Lee, Suwon (School of Energy Resources Engineering, Inha, University) ;
  • Lee, Jinwoo (LIGnex1 Co., Ltd.) ;
  • Peck, Donghyun (Fuel Cell Research Center Korea Institute Energy Research) ;
  • Jung, Doohwan (Fuel Cell Research Center Korea Institute Energy Research) ;
  • Ju, Hyunchul (School of Mechanical Engineering, Inha, University)
  • 곽건희 (인하대학교 기계공학과) ;
  • 고요한 (인하대학교 기계공학과) ;
  • 이수원 (인하대학교 에너지공학과) ;
  • 이진우 ;
  • 백동현 (한국에너지기술연구원 수소연료전지 연구단) ;
  • 정두환 (한국에너지기술연구원 수소연료전지 연구단) ;
  • 주현철 (인하대학교 기계공학과)
  • Received : 2013.10.07
  • Accepted : 2013.12.31
  • Published : 2013.12.31
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Abstract

In this study, we develop a one-dimensional (1-D), two-phase, transient-thermal DMFC model to investigate the effect of methanol concentration fluctuation that usually occurs in active-type direct methanol fuel cell (DMFC) systems. 1-D transient simulations are conducted and time-dependent behaviors of DMFCs are analyzed under various DMFC operating conditions such as anode/cathode stoichiometry, cell temperature, and cathode inlet humidification. The simulation results indicate that the effect of methanol concentration fluctuation on DMFC performance can be mitigated by proper control of anode/cathode stoichiometry, providing a guideline to optimize operating conditions of active DMFC systems.

Keywords

References

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