Maghemite Nanofluid Based on Natural Ester: Cooling and Insulation Properties Assessment

authored by

Cristian Olmo, Cristina Mendez, Felix Ortiz, Fernando Delgado, Rafael Valiente, Peter Werle

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.

Organisation(s)

High Voltage Engineering and Asset Management Section (Schering Institute)

External Organisation(s)

Universidad de Cantabria

Type

Article

Journal

IEEE Access

Volume

7

Pages

145851-145860

No. of pages

10

ISSN

2169-3536

Publication date

17.10.2019

Publication status

E-pub ahead of print

Peer reviewed

Yes

ASJC Scopus subject areas

Computer Science(all), Materials Science(all), Engineering(all)

Electronic version(s)

https://doi.org/10.1109/ACCESS.2019.2945547 (Access: Open)
https://doi.org/10.15488/10167 (Access: Open)