Keywords: hydrogen production, thermochemical water decomposition, energy analysis, exergy analysis, nuclear energy, nuclear power, flash dryer, evaporators, drying, copper, chlorine
Energy and exergy analyses of the drying step of a copper-chlorine thermochemical cycle for hydrogen production
Hydrogen can be produced by decomposing water, through thermochemical cycles, in an environmentally benign manner using nuclear energy. The copper-chlorine (Cu-Cl) cycle is one of the most promising low-temperature thermochemical cycles and involves five main steps: HCl (g) production; oxygen production; copper (Cu) production; drying; hydrogen production. In this study, energy and exergy analyses are performed of the drying step of the Cu-Cl cycle for hydrogen production, considering its operational and environmental conditions. The evaluation considers efficiencies and various parametric studies are carried out of energetic and exergetic aspects, considering variable evaporator and reference-environment temperatures.