Optimization of a Hybrid Multi-effect Desalination with Thermal Vapor Compression and Reverse Osmosis Desalination System Integrated to A Gas Turbine Cycle

The present study aimed to recognize the optimized configuration of hybrid multiple effect evaporation and reverse osmosis desalination and gas turbine cycle. To achieve this goal, first, a thermodynamic and thermoeconomic model was developed for different parts of the cycle. Six configuration for hybrid desalination plant were. In fact, one of the important goals of the present study was to investigate whether the integration of hybrid desalination plants is useful from thermodynamic and economical points of view. Two approaches were considered in the optimization study. In the first approach, the water production of multiple effect evaporation desalination plant was fixed at 70000 m3/ day and the capacity of reverse osmosis desalination was considered as 50%, 75% and 100% of thermal desalination capacity. In the second approach, the water production of multiple effect evaporation desalination plant was not fixed but the total production rate of hybrid desalination plant were given at 105000, 122500 and 140000 m3/day. The final conclusion showed that the first configuration could be chosen as the best one because it had the maximum value of exergy efficiency and minimum value of cost of water in both first and second optimization approaches.