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Dielectric Performance of Natural- and Synthetic-Ester-Based Nanofluids with Fullerene Nanoparticles

Author

Listed:
  • Miloš Šárpataky

    (Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 04200 Košice, Slovakia)

  • Juraj Kurimský

    (Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 04200 Košice, Slovakia)

  • Michal Rajňák

    (Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 04200 Košice, Slovakia
    Institute of Experimental Physics SAS, Watsonova 47, 04001 Košice, Slovakia)

  • Michal Krbal

    (Department of Electrical Power Engineering FEEC, Brno University of Technology, Technická 10, 61600 Brno, Czech Republic)

  • Marek Adamčák

    (Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 04200 Košice, Slovakia)

Abstract

According to the latest research, nanofluids as a possible future substitution for high-voltage equipment insulation have the potential to enhance the heat transfer and insulation properties of their base fluids. Dielectric properties are represented by breakdown strength (AC, DC, lightning) and dielectric performance as a set of quantities including dissipation factor, permittivity, and volume resistivity. In this study, natural and synthetic esters were mixed with C 60 nanoparticles. Samples were examined for dissipation factor, relative permittivity, and volume resistivity at temperatures between 25 °C and 140 °C to monitor changes in dielectric performance with rising temperature, in accordance with IEC 60247. In addition, the samples were tested for AC breakdown voltage (using mushroom-like electrodes with a gap distance of 1 mm) and evaluated using the Weibull distribution statistical method. These measurements allowed complex evaluation of the examined mixtures and the determination of optimal concentration for each ester-based nanofluid.

Suggested Citation

  • Miloš Šárpataky & Juraj Kurimský & Michal Rajňák & Michal Krbal & Marek Adamčák, 2022. "Dielectric Performance of Natural- and Synthetic-Ester-Based Nanofluids with Fullerene Nanoparticles," Energies, MDPI, vol. 16(1), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:16:y:2022:i:1:p:343-:d:1017880
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    References listed on IDEAS

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    1. Peter Havran & Roman Cimbala & Juraj Kurimský & Bystrík Dolník & Iraida Kolcunová & Dušan Medveď & Jozef Király & Vladimír Kohan & Ľuboš Šárpataky, 2022. "Dielectric Properties of Electrical Insulating Liquids for High Voltage Electric Devices in a Time-Varying Electric Field," Energies, MDPI, vol. 15(1), pages 1-21, January.
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    4. Konstantinos N. Koutras & Ioannis A. Naxakis & Eleftheria C. Pyrgioti & Vasilios P. Charalampakos & Ioannis F. Gonos & Aspasia E. Antonelou & Spyros N. Yannopoulos, 2020. "The Influence of Nanoparticles’ Conductivity and Charging on Dielectric Properties of Ester Oil Based Nanofluid," Energies, MDPI, vol. 13(24), pages 1-16, December.
    5. Yachao Wang & Feipeng Wang & Jian Li & Suning Liang & Jinghan Zhou, 2018. "Electronic Properties of Typical Molecules and the Discharge Mechanism of Vegetable and Mineral Insulating Oils," Energies, MDPI, vol. 11(3), pages 1-13, February.
    6. Dominika Szcześniak & Piotr Przybylek, 2021. "Oxidation Stability of Natural Ester Modified by Means of Fullerene Nanoparticles," Energies, MDPI, vol. 14(2), pages 1-13, January.
    7. Hidir Duzkaya & Abderrahmane Beroual, 2020. "Statistical Analysis of AC Dielectric Strength of Natural Ester-Based ZnO Nanofluids," Energies, MDPI, vol. 14(1), pages 1-11, December.
    8. Pawel Rozga & Abderrahmane Beroual & Piotr Przybylek & Maciej Jaroszewski & Konrad Strzelecki, 2020. "A Review on Synthetic Ester Liquids for Transformer Applications," Energies, MDPI, vol. 13(23), pages 1-33, December.
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