8

1st Reformers

1 (4-R-4)

Gas Flow

Counter Flow

Pressure

0.5MPa

Photo 2 Installation of PIR100-1

CURRENT DENSITY [mA/cirf] CURRENT DENSITY [mA/cni]

Fig. 8 i-V Characteristcis of PIRlOO-1 Fig. 9 Power Density Curve of PIR100-1 CONCLUSIONS

CURRENT DENSITY [mA/cirf] CURRENT DENSITY [mA/cni]

Fig. 8 i-V Characteristcis of PIRlOO-1 Fig. 9 Power Density Curve of PIR100-1 CONCLUSIONS

The performance of lm2 AIR stacks is better than those of 0.5m2 AIR stacks. The temperature distribution in the lm2 cell plane is satisfactory due to 1 dimensional counter flow scheme between the anode gas and cathode gas. A 200kW AIR stack for atmospheric pressure operation has been developed, adopting and checking this AIR design concept The operation of this 200kW stack is scheduled to be at the Japanese electric utility site in 1999.

The life characteristics of pressurized AIR operation have been also evaluated in parallel with scale- up. The target is to operate the long life and high power density AIR stacks. The IR stack technology will be completed when the scaleā€”up technology by the 200kW development and the long life/high power density technology by the pressurized short stacks fuse into one.

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