Exergoeconomic investigation of a multi-generation system based on gas turbine, carbon dioxide recondensation, multi effect desalination and methanol-steam reforming
In the current research, the gas turbine unit has been used as a driver in the multi- generation system; due to the large amount of waste heat from the gas turbine, the carbon dioxide recondensation cycle has been used to recover it and produce power. Besides the output heat of the gas turbine's combustion chamber component is used in the methanol-steam reforming cycle to produce hydrogen. Finally, the desalination unit and the absorption chiller cycle by recovering waste heat in the last step, produces freshwater and cooling. Dissected from energy, exergy, exergo-economic, environmental and exego- environmental aspects, in this research. The thermodynamic analysis of each system component showed that the multi-generation systems could produce 1608 kW of electric power, 3.582 kg/s of fresh water, 0.1952 kg/s of hydrogen and 416.5 kW of cooling. Also, the energy and exergy efficiencies of the simultaneous production system were calculated as 53.35% and 66.56%, respectively. In the end, the CO2 emission rate and the sum unit cost of product were calculated as 205.1 kg/MWh and 233.2 $/kWh, respectively. https://www.sciencedirect.com/science/article/abs/pii/ S2451904924007881