High pressure low heat rate phosphoric acid fuel cell stack

Abstract From the Canadian patent

High Pressure Low Heat Rate, Phosphoric Acid Fuel Cell Stack The fuel cell stack (18) is a phosphoric acid fuel cell stack which can operate at higher pressures because it does not use steam in the operation of the reformer portion (40). By being able to operate at higher pressures, the stack displays very low system heat rates and thus higher operating efficiency. The higher operating pressure also results in improved fuel cell power density and reduced cost. The stack (18) is cooled by a coolant mixture of air and entrained water droplets comprising cathode exhaust and injected water fog. During the cooling operation, the water droplets in the coolant mixture are vaporized in the cooling …