Hydrogen is becoming increasingly vital as a chemical element in the progress of human civilisation. Hydrogen finds application in the creation of ammonia, the manufacturing of nitrogen-based fertilisers, and a wide range of organic compounds, including methanol and propulsion fuel for space exploration missions. Additionally, there are ongoing experiments in the automotive industry to harness hydrogen-based fuel cells as an alternative power source. In modern technology, multiple methods and strategies for hydrogen production originate from diverse sources, such as fossil fuels, renewable energy, nuclear energy, and more. Generation IV nuclear reactors significantly affect the production of hydrogen. These reactors operate at elevated temperatures, and at these temperatures, heat transfer processes are more efficient for producing significant quantities of hydrogen. Within the realm of hydrogen production, both thermochemical and electrolysis (hybrid) techniques offer promising potential, particularly when integrated with Generation IV nuclear power reactors. This study undertakes a comparative analysis of various nuclear Generation IV reactor types concerning their capacity for substantial hydrogen production techniques while also exploring potential adaptations.

 Results 

Using the same method as the previous section, we can get the efficiencies of other 

Generation IV reactors, which are shown in Table 3. 

Table 3. The efficiency of Generation IV reactors [10] 

25.4  50.37%) = 49.32%. (5) 

Generation IV reactor Thermal efficiency (%) 

VHTR >50 

GFR 48 

SCWR 41–44 

MSFR 44–50 

LFR 33–40 

SFR 39 

 Conclusion 

Innovation within the nuclear sector plays a crucial role in devising long-term solutions 

to reduce greenhouse gas emissions and facilitate the transition to a future 

characterised by lower CO2 levels. Technologies centered around nuclear reactors are 

poised to contribute significantly to the generation of clean energy by addressing the 

need for various industries such as transportation, heating, cooking, and hydrogen 

production in the global effort to combat climate change. Nuclear stands as a key 

component for achieving a future characterized by reduced energy consumption. 

Generation IV reactors produce elevated temperatures to facilitate efficient hydrogen 

production. Despite the inherent challenges associated with advanced technology, 

VHTR and GFR stand out as the leading contenders for attaining elevated outlet 

temperatures. Using the coolant heat from the LFR, MSFR, SCWR, and SFR for 

hydrogen production is also feasible. However, this approach results in a reduction of 

electricity available for the power grid system. If proper and new structural materials can 

handle the very high temperature, then reactors can be used for hydrogen production 

and electricity generation, as well. However, the VHTR and GFR feature a notably high 

outlet temperature for the coolant, which will be used in the S–I process, steam 

reforming process, and electrolysis process for the production of hydrogen