| 摘要 |
PURPOSE:To make an electrode reaction uniform in response to the change of the outside air temperature or the load of a cell by separating a supply path of the reacting air from that of the cooling air, and introducing a part of the exhaust air of the cooling air to a reacting air supply path. CONSTITUTION:Manifolds 2 and 3 for an inlet and an outlet of the reacting air are installed on the opposite sides of a cell stack 1. An exhaust hole 8, a circulating path 6, and an outside air inlet 10 are formed in this path. Manifolds 11 and 12 for the cooling air are also set, and an air inlet path 14, and an exhaust path 16 having a heat recover 15 are installed in this path. A branch path 18 is formed to pass through the reacting air inlet 10. When the outlet air temperature is low or the load of a cell is light, the air inlet is closed and the high temperature exhaust air of the branch path is introduced as the reacting air. Therefore, the electrode reaction is made uniform, and the loss of an electrolyte is decreased by separating the supply path of the reacting air from that of the cooling air. |
