Heat Transfer Performance Tests of a Circular-Fin Sodium-to-Air Heat Exchanger for Sodium-Cooled Fast Reactors

Table 1

Key parameters of M-FHX.

Design parameters	Model HX
Thermal duty (MWt)	0.3125
No. of tube columns	4
No. of tubes	12
Tube pitch to diameter (P/OD), &	2.05 & 2.5
Tube material	STS304
Bare tube (OD/ID) (mm)	34.0/30.7
Thickness (mm)	1.65
Finned tube length (total, m)	7.722
Fin height (mm)	15.0
Fin thickness (width, mm)	1.5
Tube inclined angle (degree)	7.2
No. of fin (per unit length, m)	157.48
Spacing between fins (mm)	4.85
Total heat transfer area with fin surface (m^2)	82.04
Total number of fins per single tube (ea)	1216
Flow region size (, m)
Tube side (sodium)
Flow rate (kg/sec)	2.19
Inlet/outlet temp. (°C)	335/224.18
Pressure drop (Pa)	512
Shell side (air)
Flow rate (kg/sec)	1.70
Inlet/outlet temp. (°C)	20.0/213.9
Pressure drop (Pa)	47