Enhanced Thermal Performance of Shell-And-Tube Heat Exchangers Using Fe3O4 and Al2O3 Nanofluids: A CFD-Based Comparative Study
DOI:
https://doi.org/10.38032/scse.2026.4.24Keywords:
CFD, Fe3O4, Al2O3, Shell-and-tube heat exchanger, NanofluidAbstract
Shell-and-tube heat exchangers (STHEs) are widely used but limited by the low thermal conductivity of conventional fluids. This study uses CFD simulations to compare the thermal performance of Fe3O4-water and Al2O3-water nanofluids in an STHE under laminar flow. Nanoparticle concentrations of 5–20% and Reynolds numbers of 200-1000 were tested. Model validation showed deviations within ±8%. Results reveal that both nanofluids enhance heat transfer, with Fe3O4 consistently outperforming Al2O3. At ϕ = 20% and Re = 1000, Fe3O4 achieved a maximum heat transfer coefficient of 306.95 W/m²·K, about 318% higher than water and 40% above Al2O3. Temperature contours confirmed thinner boundary layers and greater heat removal for Fe3O4, highlighting its superior thermal capability for compact heat exchanger applications.
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Copyright (c) 2026 Asaduzzaman Sakib , Usama Ibn Aziz , Md. Samin Khan Hridoy , Fahim Tanvir , Swagoto Ray , Mohammad Nahidul Islam (Author)
This work is licensed under a Creative Commons Attribution 4.0 International License.
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