| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of using for a long time without replacing stacks, and to provide a fuel cell system with high recovery efficiency of exhausted energy by a turbine generator. <P>SOLUTION: The fuel cell system is equipped with a fuel cell generating power using fuel gas supplied to a fuel electrode A of a stack S and air supplied to an air electrode C, an electric turbine compressor 10 compressing air and supplying to the air electrode C and a turbine generator 20 operated by exhausted gas from the air electrode C, a rotation part of the electric turbine compressor 10 is supported by an air dynamic pressure bearing. With this structure, contamination of impurity such as lubricating oil or the like to pressured air supplied to the stack S can be prevented, therefore, a life of the fuel cell can be improved. And also, since the rotation part of the turbine generator 20 is supported by the air dynamic pressure bearing with less friction loss and high stability in a high-speed rotation region, power generation efficiency of the turbine generator 20 can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT |
