Enhancing pumped thermal energy storage efficiency: A comparative study of flash vapor and ejector-subcooler techniques

Key Points

• Enhanced thermal efficiency observed with ejector-subcooler techniques, leading to better energy conversion.
• Flash vapor techniques showed a notable improvement in energy retention, enabling efficient thermal storage.
• Observational analysis comparing both techniques across various thermal energy systems highlights their effectiveness.
• The implications suggest a promising approach for improving the operational capabilities of thermal energy storage systems.