مشخصات پژوهش

This study proposes and investigates a new solar-assisted polygeneration cycle of power, heating, and cooling production integrated with MED-TVC and RO desalination units for waste heat recovery from a gas turbine cycle. The thermodynamic and environmental feasibility of the system is assessed through energy, exergy, exergoeconomic, and exergoenvironmental analyses. The exergoeconomic analysis is performed based on life cycle assessment, utilizing ECO-Indicator 99 as a prominent method for evaluating environmental impacts. Furthermore, a multi-objective optimization approach utilizing the water cycle algorithm is implemented to maximize the exergetic efficiency of the system's products while minimizing costs and adverse environmental impacts. The results reveal that the integration of the base cycle with the solar system enhances the thermal efficiency of the organic Rankine cycle (ORC) by 5.813%, elevating it from 38.778 to 44.592%. This improvement consequently raises the overall thermal efficiency of the plant to 46.215%. Also, at a constant cooling load, the cooling part's performance coefficient improves by 1.275%. Adding a RO desalination unit decreases costs and environmental impacts per unit of produced fresh water by 60.41% and 64.09%, respectively. Furthermore, system optimization improves exergetic efficiency by 5.516%, lowers the cost of power and fresh water production, and reduces the environmental impacts of power and fresh water produced by the system by 4.641%, 17.794%, 7.096%, and 20.039%, respectively.