Development and performance evaluation of a multi-generation system for power generation with desalination unit

The increase in environmental problems and the increase in population have caused energy researchers and scientists to think about the design and optimization of multi-purpose power plants in an integrated manner. The term multi-purpose means access to various goals in the field of energy and environment, such as power generation, fresh water production, hydrogen production, pollutant reduction, and more. In this study, a power plant model has been investigated, which includes Brayton cycle, Rankine reheat cycle, organic Rankine cycle with ammonia working fluid, electrolysis unit and desalination unit. The overall energy efficiency of the system was calculated as 47.46% and the exergy efficiency of the whole system was also calculated as 45.07%. The value of system stability coefficient is 1.82 and the total production of carbon dioxide is 0.294 MWh/t. The most destroyed exergy is related to the combustion chamber with the value of 1605.3 kW, the amount of hydrogen and fresh water production is 0.0036 kg/s and 1.2923 kg/s, respectively.