Frequency-Dependent Influence of Applied Magnetic Fields on Heat Exchange in Ferrofluid-based Thermal System

Magnetic nanoparticles in nanofluid have a unique ability in that they can be influenced by an external magnetic field, making them a promising heat-exchanging fluid to meet the demands of highly efficient thermal systems.The parametric impact of the magnetic field (static and time-varying) on the heat exchanging rate of Fe 3 O 4 nanoparticles and water-based ferrofluid was investigated in this study.The experimental setup for generating a variable frequency magnetic field and analyzing the thermal behavior of ferrofluid is presented.Temperature data was obtained as heat is transferred from heated water to the ferrofluid used as a coolant.An enhancement of the heat transfer of the magnetic nanofluid was observed when varying the magnetic field frequency, through experimental analysis.The concentration of Fe 3 O 4 nanoparticles in the ferrofluid was varied (0.5 wt%, 1 wt%)to study the impact of nanoparticle loading on heat transfer.An alternative approach for controlling the heat exchange rate in thermal systems is proposed, utilizing the magnetic tunability of the ferrofluid.