| 摘要 |
PURPOSE:To utilize waste heat so as to improve efficiency in a fuel cell by providing an exhaust oxidizer gas supply system by which at least part of exhaust oxidizer gas exhausted from an air electrode is made to flow into a heat exchange tube in a hydrogen storage alloy tank. CONSTITUTION:Heat generated according to power generation is removed through a cooling plate 4 by means of cooling water being circulated in a cooling water circulating system 17 by driving a pump 18, and is kept at an operation temperature of a fuel cell 1. The cooling water which became a high temperature due to removal of heat is cooled in a heat exchanger 19 by driving an air blower 21, and is flowed again into the plate 4. A part of high temperature exhaust air exhausted from an air electrode 3 flows into a heat exchanger tube in a hydrogen storage alloy tank 6 after passing through an exhaust air supply system 14, and is exhausted from an exhaust port 15. In this case, hydrogen storage alloy stored in the alloy tank 6 is heated by means of the high temperature exhaust air through the heat exchanger tube, and as a result of this, hydrogen is released from the hydrogen storage alloy, and is supplied to a hydrogen electrode 2. Furthermore, alloy, and is supplied to a hydrogen electrode 2. Furthermore, pressure of this released hydrogen is controlled so as to be put under prescribed pressure. |
