International Journal Of Exergy, vol.32, no.2, pp.130-149, 2020 (SCI-Expanded)
The current study aims at optimisation and comparing the recuperative s-CO2 cycle with the re-compression s-CO2 cycle in case of changes in turbine and compressor isentropic efficiency and TITs. Below 317°C the TIT recuperated Brayton cycle (RBC) has a higher cycle efficiency than RCBC for the case where compressor efficiency is 75% and turbine efficiency is 80%. RBCs with having higher turbomachinery efficiencies (ηc = 85%, ηt = 90%) have higher cycle thermal efficiency than RCBCs with lower turbomachinery efficiencies (ηc = 75%, ηt = 80%). These results will remedy the gap in the literature on information for selecting the appropriate cycle for various purposes under certain thermodynamic inlet conditions.