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Maghemite nanofluid based on natural ester: cooling and insulation properties assessment

Abstract: The objective of this work is to study the effect that the addition of magnetic nanoparticles to a natural ester has on its properties and its cooling capacity. Some samples of ferrofluid (natural ester with maghemite) have been prepared using different concentrations. These have been characterized by measuring their thermo-hydraulic and dielectric properties, to find an optimal concentration. Then, the cooling capacities of the optimal nanofluid and the base fluid have been tested in a transformer immersed in these liquids. The experimental platform allowed the measurement of temperatures in different locations at different load levels. Parallel simulations of these tests have been carried out with a Computational Fluid Dynamics model of the experimental platform. The results show an improvement of the insulating capacity of the base fluid with the addition of maghemite nanoparticles, and an enhanced cooling capacity.

 Autoría: Olmo C., Mendez C., Ortiz F., Delgado F., Valiente R., Werle P.,

 Fuente: IEEE Access, 2019, 7, 145851-145860

 Editorial: IEEE

 Fecha de publicación: 04/10/2019

 Nº de páginas: 10

 Tipo de publicación: Artículo de Revista

 DOI: 10.1109/ACCESS.2019.2945547

 ISSN: 2169-3536

 Proyecto español: DPI2015-71219-C2 1-R

 Proyecto europeo: info:eu-repo/grantAgreement/EC/H2020/823969/EU/Raising knowledge and developing technology for the design and deployment of high-performance power transformers immersed in biodegradable fluids"BIOTRAFO"/BIOTRAFO/

 Url de la publicación: https://doi.org/10.1109/ACCESS.2019.2945547