Journal of Electrostatics最新文献_第3页

Effects of pre-charger length, symmetry and insertion depth on PM2.5 removal efficiency for electrostatic precipitator (ESP)-type wearable personal air cleaner 预充器长度、对称度及插入深度对静电除尘器（ESP）式可穿戴个人空气净化器PM2.5去除效率的影响

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-25 DOI: 10.1016/j.elstat.2025.104047

Muhammad Hanzla Munir , Sohee An , Gwangtaek Lee , Hak-Joon Kim

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Geometric profile design effect on composite insulator performance in rainy climate using electrostatic field analysis 基于静电场分析的复合绝缘子几何外形设计对阴雨气候下复合绝缘子性能的影响

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-22 DOI: 10.1016/j.elstat.2025.104051

Amro Al-Chalabi, Aws Al-Taie

{"title":"Geometric profile design effect on composite insulator performance in rainy climate using electrostatic field analysis","authors":"Amro Al-Chalabi, Aws Al-Taie","doi":"10.1016/j.elstat.2025.104051","DOIUrl":"10.1016/j.elstat.2025.104051","url":null,"abstract":"<div><div>Composite insulators have spread in the power grid replacing the old generation ceramic insulators. Their geometry can be modified to yield better electric field distribution. This reflects positively on the insulator water pollution performance preventing pollution flashover. In this work, the performance of twelve different designs of 33 kV composite insulator under rain pollution conditions is judged depending on analyzing the electric field distribution. The alternating fields, with frequencies above 1 Hz, are represented by electrostatic fields for most insulating materials. The approach utilizes the finite element method (FEM) based electrostatic field solver of COMSOL Multiphysics software. The performance of the different profile designs is compared systematically based on the reduction percentage of the field efficiency factor, and the selection went through three stages. Firstly, the performance of uniform profiles for the flat shed and inclined sheds were compared showing that the latter has a better electrostatic field distribution when polluted for both eight and ten shed profiles. Secondly, the performance of the uniform and alternating, with one and two small sheds, inclined profiles have been compared for both the eight and ten shed profiles. The results showed that the alternating profile with two small sheds has the better performance at rainy climate. Finally, for the performance of the alternating inclined two small sheds profile, the ten sheds profile design surpassed the other eight sheds design profile with 55.56 % of reduction percentage for the field efficiency factor in heavy rain (HR) and 33.33 % for light rain (LR) conditions.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104051"},"PeriodicalIF":1.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Tribo-electrostatic separation of plastic flakes originating from packaging waste 摩擦静电分离源自包装废料的塑料片

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-16 DOI: 10.1016/j.elstat.2025.104046

Khaled Daioui , Thami Zeghloul , Nils Perbet , Lucian Dascalescu

{"title":"Tribo-electrostatic separation of plastic flakes originating from packaging waste","authors":"Khaled Daioui , Thami Zeghloul , Nils Perbet , Lucian Dascalescu","doi":"10.1016/j.elstat.2025.104046","DOIUrl":"10.1016/j.elstat.2025.104046","url":null,"abstract":"<div><div>Free-fall tribo-electrostatic separators are commonly used in the recycling industry for sorting granular waste plastics but are much less effective in the case of flake-like materials of irregular shapes. This work was aimed at demonstrating that by modifying the design of a commercial rotating-cylinder-type tribocharger it is possible to expand the usage of such a separator to processing flakes originating from the shredding of packaging waste. The study was conducted on a mixture of flakes consisting of roughly 60 % PEHD (Polyethylene) and 40 % PP (Polypropylene), with an average size ranging from 8 mm to 10 mm. The plastic flakes were first introduced into the modified tribocharger, then transferred to a vibratory-plate conveyor that fed them as a mono-layer curtain at the upper end of an industrial free-fall electrostatic separator, equipped with two vertical plate electrodes (width: 150 cm; length: 200 cm), energized from two high-potential generators of opposing polarities (+60 kV, −100 kV). Under the action of the electric field, the respectively negatively- and positively-charged PEHD et PP flakes were sorted into distinct compartments. The modified design of the commercial tribocharger enabled the increase of the number and the frequency of the flake/wall and flake/flake collisions that ensure the electric charging. To investigate the impact of residence time, the experiment involved repeated passages of the material through the tribocharger. The effect of the high potential applied to the electrodes on the separation efficiency was also studied, and the results demonstrate the possibility to attain purity levels exceeding 98 %. Finally, the experiments conducted at three different humidity levels of the ambient air demonstrate that this factor has a detrimental effect on the outcome of the tribo-electrostatic separation.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104046"},"PeriodicalIF":1.9,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Evaluation of swirl-flow generation by two-stage EHD pumps with three configurations using anchored electrodes 采用锚定电极的三种配置的两级EHD泵产生漩涡流的评估

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-16 DOI: 10.1016/j.elstat.2025.104043

S.-C. Lin , B.-L. Huang , F.C. Lai

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Electrodynamic dust removal technologies for solar panels: A comprehensive review 太阳能电池板的电动除尘技术综述

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-15 DOI: 10.1016/j.elstat.2025.104045

Hiroyuki Kawamoto

{"title":"Electrodynamic dust removal technologies for solar panels: A comprehensive review","authors":"Hiroyuki Kawamoto","doi":"10.1016/j.elstat.2025.104045","DOIUrl":"10.1016/j.elstat.2025.104045","url":null,"abstract":"<div><div>This paper reviews electrodynamic dust shield (EDS) systems used to mitigate dust adhesion and accumulation on optical elements, such as photovoltaic (PV) panels. The EDS system uses an electrodynamic standing wave or travelling wave, generated by applying a two-phase or multi-phase high voltage to parallel line electrodes, to transport charged particles. After presenting a brief history of the research and development of EDS systems, theoretical and numerical investigations are introduced. They elucidate the mechanism of particle dynamics in the electrodynamic field and predict cleaning performance in low-gravity and low-pressure environments on the Moon and Mars. Subsequently, the paper presents the system configuration, including a cleaner plate and power supply, and fundamental characteristics, including the effects of electrode configuration, applied voltage and frequency, and environmental conditions. It also describes the current status of two primary applications of EDS systems: the cleaning of dust deposited on large-scale PV panels used in solar power generation plants and the cleaning of optical elements, such as PV panels, thermal radiators, lenses, and mirrors mounted on rovers for lunar and Martian exploration. In addition, future challenges are discussed, and other space applications are introduced, such as cleaning of spacesuits, transport and particle-size classification of lunar regolith for the in-situ resource utilization, and sampling of regolith and water ice particles on the Moon and asteroids.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104045"},"PeriodicalIF":1.9,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the charging characteristics of MgO powder in the feeding tube of a mineral insulated cable filling device 矿物绝缘电缆充填装置进料管中氧化镁粉体的充装特性分析

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-08 DOI: 10.1016/j.elstat.2025.104039

Jialiang Chi, Jinjun Wang, Meixuan Su, Yao Zhao, Zhiqiang Wang

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Recent advances in the electrostatic separation of particulate matter 颗粒物质静电分离的最新进展

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-07 DOI: 10.1016/j.elstat.2025.104036

Lucian Dascalescu , Thami Zeghloul , Karim Medles , Alexandru Iuga

{"title":"Recent advances in the electrostatic separation of particulate matter","authors":"Lucian Dascalescu , Thami Zeghloul , Karim Medles , Alexandru Iuga","doi":"10.1016/j.elstat.2025.104036","DOIUrl":"10.1016/j.elstat.2025.104036","url":null,"abstract":"<div><div>Since the middle of the last century, the electrostatic separation imposed itself as a standard technology in mineral beneficiation. During the last 40 years, it has been more and more widely applied for the recycling of valuable materials (metals, plastics) from industrial wastes. The present paper was aimed to review several recent solutions developed by the authors to surpass several major technical challenges: (i) push the limits of the existing electrostatic separation applications in the recycling industry, in terms of hourly throughput, recovery and purity of the products; (ii) process more complex granular or powdery mixtures, including brominated plastics, and flake-like materials; (iii) recover textile fibers from shredded waste. Described in this short review are: (i) a newly patented modular multi-functional electrostatic separator; (ii) an original procedure for the tribo-electrostatic separation of ternary mixtures of plastics containing brominated flame retardants; (iii) a modified industrial installation for the tribo-electrostatic separation of polyethylene and polystyrene flakes from packaging waste; (iv) a patent-pending equipment for the recovery of PET fibers from end-of-life tires. Research should continue to expand the application of the electrostatic separation in at least the following areas: (i) recycling of composite materials; (ii) recovery of fine powders in food and pharmaceutical industry; (iii) extracting high-value metals from micronized waste electric and electronic equipment.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104036"},"PeriodicalIF":1.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of barrier discharge by microplasma drug delivery system probe on cell viability and intracellular drug absorption 微血浆给药系统探针屏障放电对细胞活力和细胞内药物吸收的影响

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-07 DOI: 10.1016/j.elstat.2025.104040

Abubakar Hamza Sadiq , Jaroslav Kristof , Md Jahangir Alam , Sadia Afrin Rimi , Yoshinori Mizuno , Takumi Okada , Kazuo Shimizu

{"title":"The influence of barrier discharge by microplasma drug delivery system probe on cell viability and intracellular drug absorption","authors":"Abubakar Hamza Sadiq , Jaroslav Kristof , Md Jahangir Alam , Sadia Afrin Rimi , Yoshinori Mizuno , Takumi Okada , Kazuo Shimizu","doi":"10.1016/j.elstat.2025.104040","DOIUrl":"10.1016/j.elstat.2025.104040","url":null,"abstract":"<div><div>One of plasma medicines greatest accomplishments is the non-invasive drug delivery to cells, tissue, and small animals. Little to no reports has been recorded for intranasal drug delivery with air microplasma at atmospheric condition. This study presents a new design of dielectric barrier discharge microplasma referred to microplasma drug delivery system (DDS) probe for delivery of high molecular weight into DBC1.2 cell line. It is designed by winding a thin wire electrode (ground) around another thin wire electrode (high voltage) coated with a dielectric material. At room condition, the discharge characteristics of this reactor is investigated by activating the peak-to-peak voltage sine waveform. The frequent discharge current affects the dominance of the plasma discharge. The discharge power when the probe is activated at 2 kV, 3 kV, 4 kV, is evaluated, along with its impact on pH of the culture medium, ozone concentration and hydroxyl radicals generated in the medium. Furthermore, the impact of the discharge on cellular processes like growth and viability is accessed alone and during the delivery of FD-70 and FD-150 (MW:70 kDa and 150 kDa) through the intracellular membrane of the cell line. A high delivery of drug was observed in 3 kV and 4 kV discharge voltage. The highest delivery was recorded in 4 kV while 2 kV had similar drug uptake as control. The result of cell growth and viability suggests that the discharge does not show negative impact but rather within the concentration that regulate cellular processes leading to drug permeation and cell growth.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104040"},"PeriodicalIF":1.9,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of droplet charge on spray painting with a high-speed rotary bell 液滴电荷对高速转钟喷涂的影响

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-06 DOI: 10.1016/j.elstat.2025.104042

Q. Ye , O. Tiedje , J. Domnick

{"title":"Influence of droplet charge on spray painting with a high-speed rotary bell","authors":"Q. Ye , O. Tiedje , J. Domnick","doi":"10.1016/j.elstat.2025.104042","DOIUrl":"10.1016/j.elstat.2025.104042","url":null,"abstract":"<div><div>Numerical simulations of the spray coating process with an electrostatically supported high-speed rotary bell with internal charging were carried out, focusing on the effects of droplet charge on the spray formation, the film thickness distribution on the target and the transfer efficiency. From simulation results of the electrohydrodynamics (EHD) atomization process close to the bell edge, droplet size-to-charge relationships and initial droplet velocities were derived and used in the present coating simulation. Three different droplet charge models were applied and the resulting electric fields were analysed. It was found that the droplet size-to-charge relationship plays an important role for the spray-painting performance. Despite a relatively low influence of the charging model on the transfer efficiencies (TE), varying between 89 % and 94 % at an experimental TE of 94 %, significantly different film thickness distributions on the target were found. The best agreement between measured and simulated film thickness distributions was obtained using the proportionality between charge and droplet volume as indicated by the EHD-breakup simulations. Furthermore, effects of the initial droplet positions and velocities were analysed, comparing simulative and experimental results with respect to film thickness distributions on the target and droplet velocity profiles downstream the bell.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104042"},"PeriodicalIF":1.9,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143209695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison and calibration of four instruments for the measurement of electric potential at the surface of non-planar bodies 四种非平面物体表面电势测量仪器的比较与校正

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-02-03 DOI: 10.1016/j.elstat.2025.104041

Nesrine Amiour, Thami Zeghloul, Mohamed Sofiane Bendilmi, Lucian Dascalescu

{"title":"Comparison and calibration of four instruments for the measurement of electric potential at the surface of non-planar bodies","authors":"Nesrine Amiour, Thami Zeghloul, Mohamed Sofiane Bendilmi, Lucian Dascalescu","doi":"10.1016/j.elstat.2025.104041","DOIUrl":"10.1016/j.elstat.2025.104041","url":null,"abstract":"<div><div>– The electric potential measurements carried out to assess the presence of electric charges at the surface of a body are affected by the geometry of the probe-target system. The present work was specifically aimed at formulating recommendations for the calibration of two non-contact voltmeters and two field-meters currently employed for monitoring the electric potential at the surface of non-planar bodies. The experiments involved the measurement of the electric potential at the surface of planar and cylindrical electrodes of various shapes and sizes, connected to a positive high-voltage supply of 1.5 kV. The readings of each instrument were analyzed in relation with the configuration of the electrodes. As the four instruments have been designed for monitoring the electric potential on relatively large planar surfaces (>100 cm<sup>2</sup>), specific calibration was needed for measurements on bodies having geometrical characteristics that differ from those specified by the manufacturers. The experiments have shown that the interpretation of the results should consider the fact that the accuracy of the measurements diminishes when the axis of the probe approaches the edges of the electrode. In the case of non-planar surfaces, the measured values should be corrected by coefficients that can be determined by experiments conducted in conditions that mimic the situations of practical interest.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104041"},"PeriodicalIF":1.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0