| 摘要 |
A fuel cell stack includes at least first and second cells (40) and a separator assembly (42). Each cell includes an anode (44), a cathode (46) and an electrolyte (48) between them. The separator assembly includes a fluid separator having a fuel side, an oxidant side, an anode spacer element (68) between the fuel side and the anode of the first cell, and a cathode spacer element between the oxidant side and the cathode of the second cell. The separator assembly includes a cathode exhaust passageway (86) having an exhaust inlet at the central region of the cathode spacer element, and an anode feed passageway (64), including a continuous loop anode feed tube, located spaced apart from the peripheral edge, with radially inwardly and outwardly directed fuel outlets (76, 78). An air deflector helps prevent radially inwardly moving air from contacting the anode while permitting air access to the peripheral edge of the cathode spacer element. An anode recycle passageway (106) has an inlet (108) for spent fuel, at the center of the anode, and an outlet (110), within the anode feed passageway, so that cell reaction product water can be used as steam for internal reforming. |
