An Integrated Subcooled-CAES and Absorption Chiller System for Cogeneration of Cold and Power

In this study, hybridization of a Subcooled compressed air energy storage (SCAES) system with a large-scale solar-powered absorption chiller (SPAC) is proposed. The combined SPAC-SCAES system is appropriate for locations with large cooling demand and grid-connected renewable power plants. Employing this system, the renewable power plant may efficiently operate in the power market, maximizing the financial benefits by storing its surplus power and reclaiming the stored energy for balancing the demand and the production. A high potential for cold production is also offered by the system. This combined system is designed and simulated for a typical case study in Denmark. Non-linear programming (NLP) is used to optimize the operation strategy of the SCAES. The results show that by this system a large amount of balancing power can be produced for the grid, a reliable integration between the cold and electricity sectors is made, and the Ievelized cost of energy (LCOE) decreases remarkably.