“…They also discussed some potential low temperature thermochemical and hybrid cycles for geothermal based hydrogen production and examined those systems as a sustainable option for hydrogen production using geothermal heat [11]. Balta et al [12] also evaluated the thermodynamic analysis of a HTSE process coupled with a geothermal source for possible hydrogen production based on one of the first known research study on this field, namely Jules e Verne project [8,13]. The principal objective of this project was a technoeconomic study of the production of hydrogen by HTSE coupled with a geothermal source in Iceland [13].…”