Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger

The branch baffle heat exchanger, being an improved shell-and-tube heat exchanger, for which the flow manner of the shell-side fluid is a mixed flow of oblique flow and local jet. The computational fluid dynamics (CFD) method has been implemented to investigate the fluid pattern and heat transfer pe...

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Autores principales:	K. Wang, J. Q. Liu, Z. C. Liu, W. Chen, X. C. Li, L. Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Isfahan University of Technology 2021
Materias:	heat exchanger; branch baffle; cfd; flow manner; pressure drop. Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/24e65bb0642c47d6acd389f402968951
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spelling	oai:doaj.org-article:24e65bb0642c47d6acd389f4029689512021-11-13T07:03:04ZFluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger1735-3572https://doaj.org/article/24e65bb0642c47d6acd389f4029689512021-01-01T00:00:00Zhttp://jafmonline.net/JournalArchive/download?file_ID=57179&issue_ID=1015https://doaj.org/toc/1735-3572The branch baffle heat exchanger, being an improved shell-and-tube heat exchanger, for which the flow manner of the shell-side fluid is a mixed flow of oblique flow and local jet. The computational fluid dynamics (CFD) method has been implemented to investigate the fluid pattern and heat transfer performance. The accuracy of the modeling approach has been confirmed by an experimental approach using a Laser Doppler Velocimeter system. Flow field, temperature field, and pressure field are displayed to study the physics behavior of fluid flow and thermal transport. Heat transfer coefficient, pressure drop, and efficiency evaluation criteria are analyzed. In contrast with the shell-and-tube heat exchanger with segmental baffles and shutter baffles, the pressure loss in the proposed heat exchanger with branch baﬄes has been dramatically improved, accompanied by a slight decrease in heat transfer coefficient under the same volume flow rate. The efficiency evaluation criteria of the heat exchanger with branch baﬄes are 28%-31%,13.2%-14.1% higher than those with segmental baffles and shutter baffles, respectively. Further analysis in accordance with the field synergy principle illustrates that the velocity and pressure gradients of the heat exchanger with branch baffle have finer field coordination. The current heat exchanger structure provides a reference for the future optimization design to reach energy saving and emission reduction.K. WangJ. Q. LiuZ. C. LiuW. ChenX. C. LiL. ZhangIsfahan University of Technology articleheat exchanger; branch baffle; cfd; flow manner; pressure drop. Mechanical engineering and machineryTJ1-1570ENJournal of Applied Fluid Mechanics, Vol 14, Iss 6, Pp 1775-1786 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heat exchanger; branch baffle; cfd; flow manner; pressure drop. Mechanical engineering and machinery TJ1-1570
spellingShingle	heat exchanger; branch baffle; cfd; flow manner; pressure drop. Mechanical engineering and machinery TJ1-1570 K. Wang J. Q. Liu Z. C. Liu W. Chen X. C. Li L. Zhang Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger
description	The branch baffle heat exchanger, being an improved shell-and-tube heat exchanger, for which the flow manner of the shell-side fluid is a mixed flow of oblique flow and local jet. The computational fluid dynamics (CFD) method has been implemented to investigate the fluid pattern and heat transfer performance. The accuracy of the modeling approach has been confirmed by an experimental approach using a Laser Doppler Velocimeter system. Flow field, temperature field, and pressure field are displayed to study the physics behavior of fluid flow and thermal transport. Heat transfer coefficient, pressure drop, and efficiency evaluation criteria are analyzed. In contrast with the shell-and-tube heat exchanger with segmental baffles and shutter baffles, the pressure loss in the proposed heat exchanger with branch baﬄes has been dramatically improved, accompanied by a slight decrease in heat transfer coefficient under the same volume flow rate. The efficiency evaluation criteria of the heat exchanger with branch baﬄes are 28%-31%,13.2%-14.1% higher than those with segmental baffles and shutter baffles, respectively. Further analysis in accordance with the field synergy principle illustrates that the velocity and pressure gradients of the heat exchanger with branch baffle have finer field coordination. The current heat exchanger structure provides a reference for the future optimization design to reach energy saving and emission reduction.
format	article
author	K. Wang J. Q. Liu Z. C. Liu W. Chen X. C. Li L. Zhang
author_facet	K. Wang J. Q. Liu Z. C. Liu W. Chen X. C. Li L. Zhang
author_sort	K. Wang
title	Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger
title_short	Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger
title_full	Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger
title_fullStr	Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger
title_full_unstemmed	Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger
title_sort	fluid flow and heat transfer characteristics investigation in the shell side of the branch baffle heat exchanger
publisher	Isfahan University of Technology
publishDate	2021
url	https://doaj.org/article/24e65bb0642c47d6acd389f402968951
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Fluid Flow and Heat Transfer Characteristics Investigation in the Shell Side of the Branch Baffle Heat Exchanger

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