| 학회 | 한국재료학회 |
| 학술대회 | 2006년 가을 (11/03 ~ 11/03, 수원대학교) |
| 권호 | 12권 2호 |
| 발표분야 | 나노 및 생체 재료 |
| 제목 | A water management model of PEMFC considering friction pressure decline |
| 초록 | A two-dimensional model for a PEMFC is developed in which reactant pressure dropping along the gas channel in coflow mode is considered. The friction effect shown as Fanning equation is considered for the first time. Water transports in membrane are caused by electro-osmotic drag, back diffusion and pressure differential. Effects of liquid water on the effective porosity for gas transport in cathodes and cathode over-potential are involved. The simulation results show that water content of membrane is quite high with middle humidity, and that the humidity is still necessary to improve cell performance. Current density decreases along the gas channel gradually subject to pressure drops caused by friction and mole quantity decline. Thinner membrane, higher stoichiometrics, and higher humidity can elicit better performance. Better agreement is attained between experimental and simulation results after considering pressure decline along the gas channel. |
| 저자 | Minghua Wang, 우기도 |
| 소속 | 전북대 |
| 키워드 | PEFMC simulation; Coflow; Pressure drop |
