抄録
To obtain instructions for performance improvement of planar solid oxide fuel cell, numerical simulations are performed for one channel region of its single cell. The two-dimensional time-dependent simulation code developed by the authors is used in the calculations. It is made clear that the single cell voltage of the counter-flow type cell is higher than that of the co-flow type cell, whereas adoption of the counter-flow type cell is not advisable because the cell temperature tends to become too high. The co-flow two-divided type cell with intermediate heat exchanger, which supplies heat required for fuel pre-reforming, is most advisable, because it provides almost the same single cell voltage with much less cell temperature rise in comparison with the counter-flow type cell. The single cell voltage at flrst shows an upward curve and next a downward curve as the inlet gas temperature becomes high, indicating that its optimum selection is also important for performance improvement.
