Thermoeconomic modeling and optimization of combined production of cooling, heating, power and desalinated water system

In this study, thermal modeling and optimization of combined production of cooling, heating, power (CCHP) and desalinated water system are carried out. In the cogeneration system, the desalination system is coupled with the CCHP plant which is supplied its required energy by the prime mover and an auxiliary boiler to meet the cooling, heating, electricity, and freshwater needs of a hotel. In the traditional system, the hotel demands are met separately, by each of the equipment of the cogeneration system. Coupling the two systems together will reduce environmental pollution and annual costs compared to the traditional system. The results show that the annual cost and penalty of pollutant emissions for the cogeneration system decreased by 39.34% and 40.65%, respectively, compared to the traditional system. Also, the increase in energy consumption of equipment with their performance and efficiency in optimal partial load compared to the maximum performance and efficiency in a particular partial load has been calculated, the maximum of which in the eighth month for absorption and electrical chillers by 91% and 94% and per month Twelfth for backup boiler and diesel engine at 45% and 6%, respectively.