Design and optimization of a multigeneration energy system for generating power, heating, cooling and fresh water as demands of a residential scheme

Due to the energy crisis in the world, many studies have been done from different aspects about the possibility of increasing the efficiency of power generation plants. One of the developments that took place in this field was the emergence of advanced types of cogeneration power plants. So that the efficiency and reliability of the power plants increased significantly and by combining them with the Rankine power plants, the combined cycle power plants were recognized as one of the most justified methods of electricity production. In this work, in order to simulate the thermodynamic performance of cycles, models have been developed in EES software. Also, the effect of important parameters on the performance of the combined system has been investigated and optimization has been done based on these parameters to find the optimal point of the system. The results show that exergy destruction in the triple production system in the combustion chamber has its highest value because all the irreversible factors including chemical reaction, mixing and temperature difference are limited and the total efficiency of the triple generator system in the state The optimum values are ۶۶% and ۲۰% for the first and second law of thermodynamics, respectively. Also, the use of the triple production system reduces environmental effects and increases the emission of carbon dioxide as the most destructive greenhouse gas to ۱۴ tons/MWh.