Development of 500KW phosphoric acid type fuel cell. 500KW rinsangata nenryo denchi no kaihatsu

The present report explained the development of 500kW class phosphoric acid type fuel cell as an on-site fuel cell to be applied to the regional air conditioning and other industrial uses. For the output power characteristics, the power generation efficiency was planned to be higher than 40% under a higher load than 25% and 43% at the highest under a load of 50%. For the thermal efficiency, the steam recovery ratio was planned to be 26% at the highest under a load of 100% and the hot water recovery ratio was done to be about 24% indifferently to the load. An ultra high degree desulfurization catalyst was used in the desulfurizer, while a highly active catalyst was done in the reformer which was miniaturized and simultaneously enabled to operate at a low steam/carbon ratio with lowering in activity and deposition of carbon which were both made to be small. The system is abundant in steam to be generated and advantageous to the exhaust heat utilization. The CO reforming was simplified by using a highly heat-resistant catalyst. As for the exhaust heat recovery, steam is recovered by a steam generator installed on the cell-cooling water line while hot water is done by a reformer and heat exchanger installed on the exhaust gas line of fuel cell. The transportation and delivery being taken into consideration, the package was made to be structurally dividable. Starting at the end of 1991, the present system is undergoing performance confirmation of its reforming system and adjustment test on its controller. 4 figs., 2 tabs.