Open AccessNumerical Study of Shell and Tube Heat Exchanger Performance Enhancement Using Nanofluids and Baffling Technique
Author(s) -
Lahcene Bellahcene,
Djamel Sahel,
Aissa Yousfi
Publication year - 2021
Publication title -
journal of advanced research in fluid mechanics and thermal sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 13
ISSN - 2289-7879
DOI - 10.37934/arfmts.80.2.4255
Subject(s) - nanofluid , baffle , nusselt number , mechanics , streamlines, streaklines, and pathlines , materials science , heat transfer , concentric tube heat exchanger , heat transfer enhancement , shell and tube heat exchanger , thermodynamics , heat exchanger , fluid dynamics , computational fluid dynamics , heat transfer coefficient , reynolds number , physics , turbulence
The aim of this work is to investigate the forced convective heat transfer phenomena and fluid flows of water-based Al2O3 nanofluids in the baffled shell and tubes heat exchanger (STHE). Water as a hot fluid flows in the side of the tubes, and Al2O3 nanofluids as cooling fluid flow in the shell side. Numerical investigations have been carried out based on the continuity, momentum, and energy equations which are solved by using the finite element method with the help of the COMSOL 5.4 CFD software. The obtained results were presented by average Nusselt number, streamlines, isotherms, and various physical parameters which are a volumetric fraction of nanoparticles (1%? Cv ?3%). The results are found that the heat transfer increases with the rise of inlet velocity and volume fraction. In addition, the presence of baffles inside tubular heat exchangers can create a better mixture of fluids which is augmenting heat transfer execution. The choice of these parameters is important to get the maximum improvement of heat transfer with minimum entropy consumption.