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

Dariusz Zmarzły and Paweł Frącz
Additional contact information
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

Energies, 2021, vol. 14, issue 4, 1-16

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.

Keywords: swinging electrodes; contact electrification; current measurement; streaming electrification; signal processing; short-time Fourier transform; frequency analysis; coherence analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/4/970/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/4/970/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:4:p:970-:d:498324

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().