AMBIENT PRESSURE FUEL CELL SYSTEM EMPLOYING PARTIAL AIR HUMIDIFICATION
摘要
A fuel cell System is provided that is capable of operating at high temperatures and near-ambient pressure with partial humidification of air supplied to the fuel cell stack. The fuel cells of the stack incorporate gas diffusion barrier layers at the cathode side thereof. The System includes a cooling loop for circulating a liquid coolant through the stack. In some embodiments, an incoming air stream is partially humidified with water vapor transferred from a cathode exhaust stream in a gas-exchange humidifier or enthalpy wheel. In other embodiments, a cathode recycle is employed to partially humidify the incoming air. The humidity of the air and cathode exhaust streams is maintained below a stack saturation point. Methods of operating the fuel cell System are also provided.
申请公布号
WO2004079269(A3)
申请公布日期
2005.01.13
申请号
WO2004CA00320
申请日期
2004.03.03
申请人
BALLARD POWER SYSTEMS INC.;SEDERQUIST, RICHARD, A.;WELLS, BRIAN, W.;MOSSMAN, ALEX;LOUIE, CRAIG, R.
发明人
SEDERQUIST, RICHARD, A.;WELLS, BRIAN, W.;MOSSMAN, ALEX;LOUIE, CRAIG, R.