The impact of employing a magnetic field as well as Fe3O4 nanoparticles on the performance of phase change materials

Engineering Applications of Computational Fluid Mechanics

Mohsen Sharifpur¹  Amirhossein Moghaddas²  Mohammad Zandie³  Mohammad Ahmadi³  Mohammad Hossein Ahmadi⁴  Hadi Nikbin Feshkache⁵  Alireza Kazemi⁶ 

[1] Engineering III, University of Pretoria;Islamic Azad University, Science and Research Branch;School of Petroleum Engineering, Amirkabir University of Technology;Shahrood University of Technology;Sharif University of Technology;Sultan Qaboos University,;

关键词: phase change material;    thermal energy storage;    nanocomposites;    magnetic regulation;    nanoparticles;    energy transfer rate;   

DOI  :  10.1080/19942060.2021.2006092

来源: DOAJ

【 摘 要 】

In this study a 2D cubic chamber model filled with paraffin is analyzed with and without the inclusion of magnetic Fe3O4 nanoparticles at concentrations of 0.5, 1, 1.5 and 2 wt%, and an external magnetic field of intensities 0.005, 0.01, 0.015 and 0.02 T. It is ascertained that adding magnetic nanoparticles leads the horizontal temperature gradient to be reduced owing to increments in thermal conductivity. Additionally, this feature is found to be accelerated by applying an external magnetic field, which shapes highly conductive cluster formations of nanoparticles. However, since the increase in nanoparticle concentration and magnetic intensity increases the composite viscosity, there is an optimum configuration while applying both schemes. As such, the addition of 1 wt% nanoparticles provides the best results, as the melting time is reduced up to 25% compared to pure paraffin. Meanwhile, the melting time of a 1 wt% nanoparticle-containing phase change material (PCM) in the presence of an external magnetic field is improved up to 24% compared to the case with no external magnetic field. Also, the heat transfer coefficient of a 1 wt% nanoparticle-containing PCM both with and without an external magnetic field is also staggeringly enhanced compared to pure paraffin. Good correspondence with experimental data was achieved.

【 授权许可】

Unknown