Development and analysis of an integrated gas turbine system with compressed air energy storage for load leveling and energy management

This paper develops and studies the performance of Compressed Air Energy Storage (CAES) system in a newly developed integrated gas turbine power plant which is considered a promising technology for energy management and load leveling. The proposed integrated system includes two sub-systems which are single effect absorption cooling system and water heater which are integrated with the intercooler and after-cooler recovering the heat rejected from the compressed air. Comprehensive energy and exergy analyses are thermodynamically performed for the system. In addition, a parametric investigation is conducted to study the effect of different key parameters on the overall system performance and component performance. The present study results show that the overall energy efficiency for the multigenerational system reaches 53% whereas the overall exergy efficiency for the system remains at 41.7%. The performance results of this multigenerational system show an increase of 11% in energy efficiency in comparison to a conventional single generation system. Moreover, the exergy efficiency of the proposed system is 6.2% higher than the conventional single generation system.