Development and Verification of a Transient Analysis Tool for Reactor System Using Supercritical CO₂ Brayton Cycle as Power Conversion System

Table 1

Overview of current study on S-CO₂ Brayton cycle study working as power conversion system on nuclear applications.

Concept Name	-	MMR	SC-GFR	-	KALIMER-600	STAR-LM	SSTAR
Developing	-	KAIST	SNL	MIT	KAERI	Argonne National Laboratory	Argonne National Laboratory
Institution
Brayton cycle	-	direct	direct	direct	indirect	indirect	indirect
coupled method
Core Part	thermal power (MW)	36.2	200	2400	1528.9	400	45
	Pressure (MPa)	20	20	20	0.1	0.1	0.1
	Fuel type	UC fuel	UO2	UO2BeO	U-TRU-10%Zr	TRU-N Enriched to N15	Nitride fuel
	Cladding type	Stainless steel	High Ni	ODS MA956	Mod.HT9	Co-extruded	-
			Stainless steel			Si-enhanced
						F/M stainless
						steel with F/M
						substrate
	Core outlet temperature	550	650	650	545.3	578	565.8
	Mass flow rate (kg/s)	180	920	11708	7731.3	19708	2125
	Coolant	CO2	CO2	CO2	Sodium	Pb	Pb
Power Conversion System	Brayton cycle type	simple cycle	no specific design	recompression cycle	recompression cycle	recompression cycle	recompression cycle
	Cycle mass flow rate; (kg/s)	180	-	2927	8076.6	2276	239.3
	T/P of compressor; Inlet (°C/MPa)	60.8/8.0	-	32/7.69	31.25/7.4	31.25/7.4	31.25/7.4
	T/P of compressor outlet (°C/MPa)	142.2/20.0	-	60.9/20	84.8/20.0	85/20.0	84.9/20.0
	T/P of recompression compressor inlet; (°C/MPa)	-	-	70.9/7.71	91.2/7.46	86.3/7.405	90.9/7.401
	T/P of recompression compressor outlet; (°C/MPa)	-	-	159.1/20.0	189.4/19.98	183.8/19.98	189.8/20
	T/P of turbine inlet; (°C/MPa)	550/19.93	-	650/19.45	508.0/19.74	540.0/19.88	541.4/19.99
	T/P of turbine outlet (°C/MPa)	440.75/8.16	-	529.9/7.93	394.2/7.6	426.9/7.713	420.1/7.435
Reference	-	[7]	[6]	[4]	[8]	[9]	[10]