In this study, a nuclear hybrid energy system (NHES) with large-scale hydrogen storage integrated gas turbine cycle is proposed as flexible for load following. The consists of reactor, steam Rankine cycle, electrolyzer, in an underground salt cavern, and Brayton that uses fuel to generate additional electricity meet peak demand. A dynamic mathematical model developed each subsystem the NHES. To...

Underground hydrogen storage can store grid-scale energy for balancing both short-term and long-term inter-seasonal supply demand. However, there is no numerical simulator which dedicated to the design optimisation of such technology at grid scale. This study develops novel simulation capabilities GPSFLOW (General Purpose Subsurface Flow Simulator) modelling gas mixture (e.g., H2–CO2–CH4–N2) in...

The geological resources of salt cavern gas storage in China are mostly complex layered beds with many thin inter-layers and high insoluble matter content. In the process cavity-building by water-solution method, matters layers peeled off deposited at bottom cavern, occupying more than one-third whole cavity volume. These sediments have a large pore volume strong compressibility, they filled br...

Fluctuations in renewable energy production, especially from solar and wind plants, can be solved by large-scale storage. One of the possibilities is storing form hydrogen or methane–hydrogen blends. A viable alternative for salt caverns Lined Rock Cavern (LRC) underground most significant challenges LRC storage sealing liners, which need to have satisfactory mechanical properties. An experimen...

Hydrogen can be used to enable decarbonisation of challenging applications such as provision heat, and a fuel for heavy transport. The UK has set out strategy developing new low carbon hydrogen sector by 2030. Underground storage will key component any regional or national network because the variability both supply demand across different end-use applications. For pure hydrogen, salt caverns c...