Experimental Investigation of the Thermal Performance of Iron Oxide-Water Nanofluid Subjected To a Magnetic Field in a Horizontal Tube

Authors : Hamza Ertürk, Tarkan Koca

Pages : 89-95

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Publication Date : 2025-03-26

Article Type : Research Paper

Abstract :n this study, an experimental analysis was performed to evaluate the thermal behavior of iron oxide-water nanofluid as it traverses a straight copper tube, under the influence of a constant heat capacity and the application of a magnetic field. Four types of fluids were used in the experiment. These are pure water, 0.5% concentration of Fe3O4-water nanofluid, 1% concentration of Fe3 O4-water nanofluid and 1.5% concentration of Fe3O4-water nanofluid. Experiments were conducted at two distinct flow rates as10x10-5 m3s-1 and13x10-5 m3s-1. The inlet temperatures of the fluids and the surface temperature of the copper tube were maintained at the same level throughout all experiments. The Nusselt number was determined at Reynolds numbers of 4200 and 5400 in experiments conducted under turbulent flow conditions. The thermal performances of the fluids were compared by comparing the optained Nusselt numbers. The experiments demonstrated that as the Reynolds number increased, the Nusselt number also increased, with the most notable enhancement of 20.7% observed in the iron oxide-water nanofluid at a 1.5% concentration and a Reynolds number of 5400 under a magnetic field. Additionally, both the heat transfer coefficient and the Nusselt number improved with the use of nanofluids.
Keywords : Nanoakışkan, manyetik alan, ısı transferi, demir oksit

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