An applicable approach for a multi-step regenerative irreversible Brayton cycle on the
basis of thermodynamics and optimization of thermal efficiency and normalized outpuzt power is
presented in this work. In the present study, thermodynamic analysis and a NSGA II algorithm
are coupled to determine the optimum values of thermal efficiency and normalized power output
for a Brayton cycle system. Moreover, three well-known decision-making methods are employed
to indicate definite answers from the outputs gained from the aforementioned approach. Finally,
with the aim of error analysis, the values of the average and maximum error of the results are
also calculated.
