Abstract: The water management in Proton Exchange Membrane Fuel Cell (PEMFC) has been regarded as one of the crucial effects on its performance. It is due to use of humidified hydrogen and air as fuels as well as production of H2O during chemical reactions in PEMFC. Such conditions lead to excess H2O remaining in PEMFC, resulting flooding phenomena which may block air flow channels. Therefore, in order to enhance the performance of PEMFC especially under concentration loss region, it should be necessary to understand and manage the flooding phenomenon in proper manner. This lecture deals with these two critical subjects in terms of qualitative analysis of the flooding phenomenon and introduction of modified channel design for improved water management.
 

Brief Biography of the Speaker:
Professor Hyung Hee Cho received the B.S. (1982) and M.S. (1985) degrees in mechanical engineering from Seoul National University, Korea and the Ph.D. degree (1992) from University of Minnesota, USA. He has been the faculty of Department of Mechanical Engineering, Yonsei University, Seoul, Korea since 1995. He has served for a chairman of Department of ME and an associate dean of College of Engineering, Yonsei University. He has published more than 150 papers in journals, about 200 papers in conference presentations/proceedings, and more than 15 patents. He is currently vice president of KSME Energy and Power Division, a committee member of Gas Turbine Heat Transfer Committee (ASME), a scientific council member of International Center for Heat and Mass Transfer (ICHMT), and in editorial board of three international journals; JP Journal of Heat and Mass Transfer, Advances in Mechanical Engineering and International Journal of Fluid Machinery and Systems.