Self-Driven Flow Characteristic of Magnetic Nanofluids Under the Magnetic Field
Jiale Mi, Qiang Yang, Yijun Fu, Binfei Zhan, Zhichao Wang, Meibo Xing
TL;DR
This study explores how magnetic fields influence the flow and heat transfer of magnetic nanofluids in a closed-loop system.
Contribution
The paper introduces a novel experimental setup to investigate self-driven flow and heat transfer in magnetic nanofluids under a magnetic field.
Findings
Circulation flow velocity increases with magnetic field strength, nanofluid concentration, and temperature difference.
Heat transfer coefficient rises significantly with increased flow velocity.
Magnetic field strength is the most influential factor in the thermomagnetic effect.
Abstract
Against the backdrop of the ever-expanding practical applications of magnetic nanofluids, the self-driven flow and heat transfer characteristics of water-based Fe3O4 magnetic nanofluids were experimentally investigated under a uniform magnetic field in the closed-loop pipeline system in this work. Specifically, Fe3O4 nanoparticles were synthesized using the co-precipitation method, and stable magnetic nanofluids with concentrations ranging from 0.025 wt% to 0.150 wt% were prepared using sodium citrate as a dispersant. In the presence of a magnetic field, a closed-loop system that integrates heating and cooling branches was established. Furthermore, the effects of magnetic field strength, temperature difference between the heating and cooling sections, magnetic nanofluid concentration, and pipeline length on the self-circulation flow velocity were discussed, leading to insights into the…
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Taxonomy
TopicsNanofluid Flow and Heat Transfer · Power Transformer Diagnostics and Insulation · Characterization and Applications of Magnetic Nanoparticles