抄録
The authors perform numerical simulations for the whole region of single cell plate of planar solid oxide fuel cell. It is made clear that the maximum temperature in the cross-flow type cell is considerably higher than that in the co-flow and the counter-flow type cells. This is because the air flows along the high heat generation region near the fuel gas inlet in this type cell. The partial reverse of the fuel gas flow direction is most effective to reduce the maximum temperature in the cross-flow type cell, because this divides the high heat generation region and makes the gas temperature rise of each air channel uniform. The effect of uneven gas supply to each gas channel on cell performance is investigated, and it is made clear that its bad influence is very small. The influence of radiation heat transfer to and from its exterior is also examined in the case the cell is contained in a constant temperature vessel and is under the thermally self-sustaining operation, and its bad influence is turned out to be also small.
