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

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 24; no. 6; pp. 495 - 509
• Main Authors: 곽건희(Geon Hui Gwak), 고요한(Jo Han Ko), 이수원(Su Won Lee), 이진우(Jin Woo Lee), 백동현(Dong Hyun Peck), 정두환(Doo Hwan Jung), 주현철(Hyun Chul Ju)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2013
• Subjects: 직접메탄올연료전지; One-dimensional simulations; Direct methanol fuel cell; Methanol feed concentration; Active DMFC systems; 메탄올공급농도; 액티브 직접메탄올연료전지 시스템; 1차원시뮬레이션; 1
• ISSN: 1738-7264; 2288-7407

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.