A Small-Sized HTGR System Design for Multiple Heat Applications for Developing Countries

Table 8

Major specifications of steam generator.

Parameters	Values
Thermal duty (MW)	50
Primary helium
Temperature (inlet/outlet) (°C)	750/325
Flow rate (kg/s)	22.4
Water/steam
Temperature (inlet/outlet) (°C)	200/538
Pressure (inlet/outlet) (MPa)	13.3/12.5
Flow rate (kg/s)	19.3
Heat exchanger tube
Material	Evaporator: 2.25Cr-1Mo steel
	Super heater: Alloy 800H
Outer diameter (mm)	31.8
Thickness (mm)	3.5
Number of tubes	36
Helical tube bundle
Number of layers	8
Outer diameter (m)	1.4
Inner diameter (m)	0.7
Effective heat transfer area (m^2)	260