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Measurement of Dielectric Liquid Electrification in the Shuttle System with Two Parallel Electrodes

Author

Listed:
  • Dariusz Zmarzły

    (Faculty of Electrical Engineering Automatic Control and Informatics, Opole University of Opole, Prószkowska 76, 45-758 Opole, Poland)

  • Paweł Frącz

    (Faculty of Electrical Engineering Automatic Control and Informatics, Opole University of Opole, Prószkowska 76, 45-758 Opole, Poland)

Abstract

In this paper, a device with swinging plate electrodes has been proposed to measure contact electrification of a liquid sample. The proposed structure is composed of two parallel metallic plates immersed in a dielectric liquid. One of the plates is swinging with a constant frequency in a range from 0.4 to 4 Hz. The paper investigates the dependence in time and frequency of electrode velocity and streaming electrification. The measured current occurs for a very low intermittent velocity of less than 10 mm/s. In this range, the electrification current is around 50 pA. For higher velocities of up to 150 mm/s, the current is at the level of 1200 pA. The time–frequency characteristic using short-time Fourier transform shows no temporal changes in the frequency spectrum. The dependence of electrification on shuttle speed was calculated and it can be approximated with a second order polynomial model with the determination coefficient higher than 0.9. The advantage of the sensor is the ability to measure electrification phenomena without the necessity of having rotating electrodes or having a large volume of flowing liquids.

Suggested Citation

  • Dariusz Zmarzły & Paweł Frącz, 2021. "Measurement of Dielectric Liquid Electrification in the Shuttle System with Two Parallel Electrodes," Energies, MDPI, vol. 14(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:970-:d:498324
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    References listed on IDEAS

    as
    1. Maciej Zdanowski, 2020. "Electrostatic Charging Tendency Analysis Concerning Retrofilling Power Transformers with Envirotemp FR3 Natural Ester," Energies, MDPI, vol. 13(17), pages 1-11, August.
    2. Maciej Zdanowski, 2020. "Streaming Electrification of Nycodiel 1255 Synthetic Ester and Trafo EN Mineral Oil Mixtures by Using Rotating Disc Method," Energies, MDPI, vol. 13(23), pages 1-14, November.
    3. 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.
    4. Maciej Zdanowski, 2020. "Streaming Electrification Phenomenon of Electrical Insulating Oils for Power Transformers," Energies, MDPI, vol. 13(12), pages 1-12, June.
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