۳E analysis and multi-criteria optimization of a Salinity Gradient Solar Pond (SGSP) integrated power plant

This study introduces a novel salinity gradient solar pond (SGSP)-integrated power plant that combines a recuperative-regenerative organic Rankine cycle (RR-ORC) and a thermoelectric generator (TEG) for efficient low-temperature power generation. The RR-ORC, featuring an internal heat exchanger and a feed heater, is selected for its superior thermodynamic and economic performance compared to conventional ORC configurations. A comprehensive energy, exergy, and exergoeconomic (۳E) analysis is performed, followed by multi-criteria optimization using NSGA-II and TOPSIS to enhance exergy efficiency while minimizing system costs. The results indicate that under optimal operating conditions, the system delivers a power output of ۱۹۸۷ kW, with energy and exergy efficiencies of ۱۰.۳% and ۱۴.۳۶%, respectively, and a system cost rate of ۱۸۲.۹۴ per hour. This study underscores the potential of solar pond-based power plants as a sustainable and cost-effective solution for renewable energy generation.

کلیدواژه ها:

salinity gradient ، NSGA-II ، Solar Pond ، Thermoelectric Generator ، ORC