Table 4.

Validation of results.

Validation of pre‐compression Brayton cycle
Working fluid	Base conditions	Thermal efficiency		Estimated error
		Kim et al..[[ 25 ]]	Current model
CO2	MT inlet pressure = 27 180 kPa, MT inlet temperature = 384.85 °C, ηMT = 0.85,  ηMC = 0.9	31.42%	31.6%	0.57%
Validation of bottoming tCO2 cycle
CO2	Maximum pressure (P 10)  = 10 000 kPa, Minimum pressure (P 10) Maximum temperature (T10 ) = 65 °C, Minimum temperature (T12) = − 10 °C, ηTCT = 0.7, ηPump  = 0.8,	Wang and Dai[ 26 ]	Current model	0.04%
		8.484%	8.48%	0.01%