| 摘要 |
<p>A fuel cell system (1) and method in which fuel exhaust from a fuel cell stack (6) is recycled to a fuel side stack inlet (5) by way of a fuel exhaust recycle line (8) and a jet pump (4). A primary fuel stream at an inlet (3) provides the motive power for the jet pump and the jet pump (4) has a variable nozzle geometry to entrain variable proportions of fuel exhaust in the primary fuel in order to maintain desired fuel flow volumes across the anode-side of the fuel cell stack on turndown of the stack and to facilitate enhanced fuel utilization by the stack.</p> |
