Study on hydrogen production from steam electrolysis in LHD-type power reactor FFHR

To assess the technical potential of the FFHR operation style, dedicated hydrogen production from electrolysis by the electric power of 1 GW is investigated in this report. Gaseous hydrogen of 700 tons per day can be produced. The steam of 6354 tons per day at 150 °C is necessary in this case. In FFHR, about 450 MW of thermal power is delivered via the scrape-off layer plasma to the divertors with double-null structure. The divertor may be one of the potential heat sources to produce the steam for the electrolysis. Hydrogen has to be packaged by compression or liquefaction, transported by trailer or pipeline, stored, and transferred to the end users. The four different styles of plant outputs were investigated: (A) 1 GW of power generation, (B) pressurized hydrogen gas of 625 tons per day, (C) liquid hydrogen of 574 tons per day, and (D) 0.824 GW of electricity plus 100 tons per day of liquid hydrogen.