Investigating the Pollutants Reduction of a CCHP System Coupled with Reverse Osmosis Desalination in Comparison to Traditional System

In present paper, the modeling and optimizing of the combined cooling, heating and power (CCHP) system coupled with the reverse osmosis desalination are performed for a hotel. At the first step, operation strategy of two different configurations of combined cooling, heating and power system and reverse osmosis desalination is presented to provide the building demands, and the operation of these systems in comparison with traditional system will be optimized by genetic algorithm. In optimization process, multi criteria objective function (energetic, economic and environmental), called the Percent of Relative Annual Benefit (PRAB), and gas engine as prime mover (with in partial load), were used. Then, the environmental performance of these systems in comparison with traditional system is examined. Present results show that pollutant emission of CO2, CO and NOx reduce in an extensive range of nominal power of gas engine in both configurations. However, in CCHPW configuration system, by selecting 3250 kW nominal power for gas engine, a better performance is observed in relation with economic and environmental considerations, such that the highest annual benefit of 5.21×106 $/year is obtained, while the emission of CO2, CO and NOx pollutants reduces by 61%, 79% and 86%, respectively.