| 摘要 |
During operation of a block (2) of, for example, PEM fuel cells, it is fundamentally necessary to solve the problem of controlled dissipation of water and/or inert gas from the fuel cell block which, until now, has not been done, however, for a gas utilisation level of approximately 100%. For this purpose, the invention provides that, in order to remove water and inert gas from the cathode side and inert gas from the anode side, the water and inert gas elements in a gas mixture (8)(O2) on the cathode side and the inert gas element in a gas mixture (18)(H2) on the anode side be concentrated in the flow direction of the respective gas mixture (O2, H2) and be at least partially discharged from the block. In consequence, it is possible to keep the overall efficiency of the fuel cell block (2) at a virtually constant level during operation. The method according to the invention and the devices derived from it can in principle be used in fuel cell blocks which are constructed from PEM, alkaline or acid fuel cells. <IMAGE> |
