Modifying a simple Brayton cycle by utilizing an intercooler/reheater during compression/expansion processes within the compressor/turbine is an enviro-economic feasible approach for a more efcient system with cleaner productions. A BraytonRankine cycle performance is enhanced in this study by placing an ejector refrigerating cycle (ERC) to produce refrigerating load from wasted heat recovery for the intercooling process between the compression stages in the Brayton cycle. Analyses including energy, exergy, economics, and environmental are performed to investigate the proposed combination of the Brayton-Rankine cycle with the ERC and compare it with various typical types of the Brayton-Rankine cycles. Eventually, a robust parametric study and multi-criteria optimization model are developed based on the non-dominated sorting genetic algorithm II method to assess system performance and fnd its optimal operating point. Results showed that the intercooler with cooling fuid coming from the ERC reduces the fuel consumption, CO2 emission, and combined cycle\\\\\\\'s levelized cost of electricity (LCOE) signifcantly compared to common intercoolers with atmospheric air as the cooling fuid. The energy and exergy efciencies of the proposed cycle are higher than the typical Brayton-Rankine cycles. The highest thermal and exergy efciencies and the lowest fuel consumption, LCOE, and CO2 emissions are 62.79%, 60.11%, 114.7 kg/MWh, 27.61 $/MWh, 316.83 kg/MWh, respectively, related to the combination of the ERC and the reheat Brayton-Rankine cycle. These values are obtained through stand-alone technical and economic analyses. Applying simultaneous efects of exergy and economic indices in multi-objective optimization resulted in the optimum exergy efciency of 57.64% and LCOE of 29.93 $/MWh.

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