In order to improve heat transfer performance of conventional segmental baffled shell-and-tube heat exchangers (STHXs), the shell-and-tube heat exchanger with combined helical baffles (CMH-STHX) were invented. In the present study, the CMH-STHX is compared with three other STHXs which were set up with continuous helical baffles (CH-STHX), discontinuous helical baffles (DCH-STHX) and segmental baffles (SG-STHX), by Computational Fluid Dynamics method. The numerical results show that, for the same mass flow rate at the shell side, the overall pressure drop of the CMH-STHX is about 50% and 40% lower than that of SG-STHX and CH-STHX. The heat transfer coefficient of the CMH-STHX is between those of CH-STHX and DCH-STHX and it is 6.3% lower than that of SG-STHX. The heat transfer coefficient under unit pressure drop h/Δp is introduced to evaluate the comprehensive performance of STHXs. The h/Δp of the CMH-STHX is 7.5%, 6.5% and 87.4% higher on average than those of the CH-SHTX, DCH-STHX and SG-STHX. Furthermore, the total heat transfer rate of CMH-STHX is about 25% higher than that of SG-STHX for the same total pressure drop of shell side. Supported by these results, the new heat exchanger (CMH-STHX) may be used to replace the conventional shell-and-tube heat exchanger in industrial applications.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4939-2
PROCEEDINGS PAPER
3-D Numerical Study on Shell-Side Comprehensive Performance of Shell-and-Tube Heat Exchanger With Combined Helical Baffles
Guidong Chen
,
Guidong Chen
Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Jing Xu
,
Jing Xu
Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Ming Zen
,
Ming Zen
Xi’an Jiaotong University, Xi’an, Shaanxi, China
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Qiuwang Wang
Qiuwang Wang
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Search for other works by this author on:
Guidong Chen
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Jing Xu
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Ming Zen
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Qiuwang Wang
Xi’an Jiaotong University, Xi’an, Shaanxi, China
Paper No:
IHTC14-22712, pp. 553-562; 10 pages
Published Online:
March 1, 2011
Citation
Chen, G, Xu, J, Zen, M, & Wang, Q. "3-D Numerical Study on Shell-Side Comprehensive Performance of Shell-and-Tube Heat Exchanger With Combined Helical Baffles." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 4. Washington, DC, USA. August 8–13, 2010. pp. 553-562. ASME. https://doi.org/10.1115/IHTC14-22712
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