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민경덕(Kyoungdoug Min),김한상(Han-Sang Kim),강상규(Sanggyu Kang) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A dynamic model of a stationary PEM fuel cell system has been developed in Matlab/SIMULINK<SUP>®</SUP>. The system model accounts for the fuel processing system, PEM stack with coolant, humidifier with anode tail-gas oxidizer (ATO), and an enthalpy wheel for cathode air. A quasi-two dimensional unit PEM cell was modeled for solving the dynamic species, mass conservation equations and the dynamic energy balance to capture the details of MEA behavior, such as water transport. The model predictions well characterized the observed dynamic catalytic partial oxidation (CPO) temperature, voltage, and temperature of stack coolant outlet observations. The model is shown to be a useful tool for investigating the effects of inlet conditions and for development of control strategies for enhancing system performance.
정적 연소실에서 메탄 가스 분사의 점화 지연 시간에 대한 NO의 영향
임재만(JaemanLim),민경덕(Kyoungdoug Min) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Numerical study has been performed for simulating the autoignition and combustion processes of the transient gaseous methane jets in the diesel-like chamber conditions using the flamelet concept The influence of NO on the autoignition process has been investigated. In results, NO extends the ignition delay time of diffusion flame. The caIculation results were agreed well with experimental results.<br/>