RT Journal Article
ID 5012c80c6372e3ed
A1 Yang, Jian-Feng
A1 Wang, Qiu-Wang
A1 Zeng, Min
T1 NUMERICAL INVESTIGATION OF COMBINED PARALLEL TWO SHELL-PASS SHELL-AND-TUBE HEAT EXCHANGERS WITH CONTINUOUS HELICAL BAFFLES
JF Heat Transfer Research
JO HTR
YR 2016
FD 2016-07-13
VO 47
IS 6
SP 575
OP 595
K1 continuous helical baffles
K1 combined parallel two shell-pass shell-and-tube heat exchangers (CPTP-STHXs)
K1 segmental baffles
K1 heat transfer
K1 comprehensive performance
AB A combined parallel two shell-pass shell-and-tube heat exchanger with continuous helical baffles (CPTP-STHX) and an improved model (CPTP-STHX-improved) have been proposed to improve the heat transfer performance of shell-and-tube heat exchangers (STHXs). It is found that proportion of the mass flow rate of the inner shell pass to the total mass flow rate of the shell side is a constant. The heat transfer performance increases with the resistance of the inner shell pass. The CPTP-STHX-improved is compared with a conventional STHX with segmental baffles (SG-STHXs) by means of the computational fluid dynamic (CFD) method. The numerical results show that for the same mass flow rate m in the shell side, the heat transfer coefficient h, the overall pressure drop Δp, and the heat transfer coefficient per pressure drop h/Δp of the CPTP-STHX-improved are 41.1%, 34.5%, and 4.9% higher than those of the SG-STHX, respectively. For the same overall pressure drop in the shell side, the heat transfer coefficient of the CPTP-STHX-improved has 23.1% increases than that of the SG-STHX. Based on these results, it can be concluded that the CPTP-STHX-improved might be used to replace the conventional STHX with segmental baffles in industrial applications.
PB Begell House
LK http://dl.begellhouse.com/journals/46784ef93dddff27,6f121ca8263f1e7d,5012c80c6372e3ed.html