Patent ID: 8722270
Filing Date: 2014-05-13
Classification: H01M,Y02E

Abstract:
1. A solid oxide fuel cell stack operative at a temperature of 600° C. to 1000° C. including a fuel delivery subsystem comprising a reformer, an air delivery subsystem capable of cooling the stack prior to purging the fuel delivery subsystem with steam, and having an anode comprising nickel, and a steam purge subsystem comprising: (a) a water chamber or source connected to the fuel delivery subsystem upstream from the reformer; and (b) a fail-safe mechanism configured to acurate the steam purge subsystem, comprising a salenoid valve connected to a power source, wherein the solenoid valve opens when power to the solenoid is disrupted, and pressurizing means for pressuring the water in a liquid state from the water chamber or source to the fuel delivery system.