An underground constant-pressure CAES system based on staged multi-level compression: Thermodynamic modeling and performance analysis

Key Points

• This analysis suggests improved performance of constant-pressure systems over traditional models.
• Increased efficiency and energy recovery rates are observed, particularly under varying conditions.
• Thermodynamic modeling assessments create insights into operational dynamics of CAES technology.
• Performance analysis underscores the need for optimized staging in compression techniques to enhance energy storage.