Abstract
With the aim of recycling carbon dioxide, the SCO2 gas turbine power generation technology GT-NEXT, which is indirectly connected to a high-temperature nuclear heat source such as a nuclear fusion reactor or a hightemperature gas reactor via an intermediate heat exchanger (IHX), has a power generation efficiency of 60% during high-temperature operation at 800°C, the world's highest level for closed-cycle power generation.
Furthermore, it is possible to convert CO produced by the SCO2/CO radiolysis reaction using hightemperature nuclear heat sources and high-level radioactive waste and radiation into clean hydrogen by reacting it with water as a raw material in the water-gas shift reaction (WGS). By combining these core technologies, electricity/hydrogen co-production systems from various high-temperature nuclear heat sources are in sight.
These technologies for producing electricity and hydrogen simultaneously from high-temperature nuclear heat sources are expected to function effectively as a measure to prevent global warming as a fourth industrial revolution technology following steam power generation, which drove the third industrial revolution.
