Numerical Investigation on Double Shell-Pass Shell-and-Tube Heat Exchanger with Continuous Helical Baffles

Table 1

Geometric parameters of STHXs.

Item	STHXCH	STHXCH	STHXSG
Shell inside diameter (mm)	207	207	207
Tube outside diameter (mm)	19	19	19
Tube pitch (mm)	25	25	25
Length of tubes 𝑙 (mm)	1500	1500	1500
Number of tubes	55	55	55
Helix angle (°)	36	20
Helix pitch (mm)	472.5	236.7
Baffle pitch (mm)			118.5
Flow area (m^2)	7.44𝑒−3	7.44𝑒−3	7.44𝑒−3
Shell pass	Double	Single	Single