Journal of Electrostatics最新文献_第4页

Design, development and performance evaluation of a miniature electrostatic precipitator in an indoor environment 室内微型静电除尘器的设计、研制及性能评价

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-31 DOI: 10.1016/j.elstat.2025.104038

Aiswarya Kumar , Prashant Nawale , Manoranjan Sahu

{"title":"Design, development and performance evaluation of a miniature electrostatic precipitator in an indoor environment","authors":"Aiswarya Kumar , Prashant Nawale , Manoranjan Sahu","doi":"10.1016/j.elstat.2025.104038","DOIUrl":"10.1016/j.elstat.2025.104038","url":null,"abstract":"<div><div>Indoor air quality is a major concern in the modern environment. Although various pollutants coexist indoors, particulate matter (PM) is a major health concern. Even though different PM capture technologies are available in market as well as on lab scale, they pose several drawbacks. It was in this regard that electrostatic precipitator (ESP), a widely preferred technology for industrial application but has yet to be explored to that extent in indoor environments could provide multiple benefits in latter. Therefore, a miniature single-wire, single-stage and wire-plate square cross-sectional ESP was designed in laboratory and operated at optimal operating conditions based on theoretical calculations, experimental results as well as computational fluid dynamics (CFD) modelling to obtain maximised capture of PM. Results from study confirmed that designed ESP was capable of capturing various standard aerosols such as sodium chloride, ammonium chloride and magnesium chloride with a total removal efficiency of 99.94 %–99.97 % in wide PM sizes from 10 nm to 800 nm. To simulate performance in a real scenario, experiments were also performed with major indoor PM sources like incense sticks, candle burning and mosquito coils having different particle number distributions and achieved a total PM capture efficiency of 99.24, 99.99 and 99.97 % respectively. Designed ESP also removed ambient air as well as infiltrated PM from outdoors with a total efficiency of 97.87 % and 99.74 % respectively. Additionally, energy consumed/clean air delivery rate (CADR) (0.32 W/(m³/hr)) and emission of by-products like ultrafine particles as well as nitrogen dioxide were found to be comparatively lesser compared to commercial purifiers suggesting its possible applicability in scaling up as an indoor air purifier.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104038"},"PeriodicalIF":1.9,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136272","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

Triboelectric generators: A comprehensive review of innovative energy solutions 摩擦发电机：创新能源解决方案的全面回顾

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-30 DOI: 10.1016/j.elstat.2025.104037

Sneha Grover, Amanpreet Kour, Piyush Tailor, Dheeraj Minglani

引用次数: 0

Application study on one-dimensional partial element equivalent circuits to lightning current distribution on surface structure 一维局部单元等效电路在表面结构雷电电流分布中的应用研究

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-28 DOI: 10.1016/j.elstat.2025.104032

Chen Tong , Yeyuan Huang , Xinping Li , Shanliang Qiu , Xiaoliang Si , Zemin Duan , Wei Yan , Ling Yao

引用次数: 0

Characterization and Optimization of Electrospun PVA/PLA Nanofibers Using Taguchi Method: Morphology and Structure 田口法电纺丝PVA/PLA纳米纤维的形貌与结构表征与优化

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-24 DOI: 10.1016/j.elstat.2025.104035

Reyhaneh Fatahian , Rasool Erfani

{"title":"Characterization and Optimization of Electrospun PVA/PLA Nanofibers Using Taguchi Method: Morphology and Structure","authors":"Reyhaneh Fatahian , Rasool Erfani","doi":"10.1016/j.elstat.2025.104035","DOIUrl":"10.1016/j.elstat.2025.104035","url":null,"abstract":"<div><div>The blending of poly(lactic acid) (PLA) with hydrophilic polymers such as poly(vinyl alcohol) (PVA) significantly enhances PLA's elasticity and water affinity, addressing its inherent fragility and hydrophobicity. These improvements render PLA/PVA blends highly suitable for advanced medical applications, including wound dressings. This study pioneers the systematic optimization of electrospinning parameters— applied voltage, flow rate, and needle-to-collector distance—to achieve uniform fibre morphology and desired structural characteristics in PLA/PVA nanofibers. Utilizing the Taguchi design of experiment (DOE) methodology, this research provides a comprehensive analysis of the effects of these parameters on the structure and diameter distribution of single-nozzle electrospun nanofibers. A novel aspect of this study is the exploration of a mutual solvent system for electrospinning these nanofibers, which has not been extensively investigated in existing literature. The findings reveal that flow rate is the most influential parameter, followed by applied voltage and needle-to-collector distance. Optimal electrospinning conditions—needle-to-collector distance of 18 cm, flow rate of 0.6 ml/h, and voltage of 18 kV—are identified, resulting in the smallest average fibre diameter and minimal variation. This work not only advances the field of nanofiber fabrication but also sets a new benchmark for the production of high-quality fibres with consistent properties. The insights gained from this study have far-reaching implications for biomedical applications, particularly in the development of effective wound dressing materials. Furthermore, the methodological innovations and theoretical contributions presented here have the potential to influence future research directions and policy decisions in the field of biomedical engineering, particularly in developing effective wound dressing materials, and offer potential insights for broader applications in tissue engineering and regenerative medicine.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104035"},"PeriodicalIF":1.9,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136275","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

Effect of contaminant particles, temperature, and humidity on the dielectric strength of insulating oils 污染颗粒、温度和湿度对绝缘油介电强度的影响

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-22 DOI: 10.1016/j.elstat.2025.104030

F. González, A. Retamoso, F. Cely, J. Lozano, O. Sánchez

{"title":"Effect of contaminant particles, temperature, and humidity on the dielectric strength of insulating oils","authors":"F. González, A. Retamoso, F. Cely, J. Lozano, O. Sánchez","doi":"10.1016/j.elstat.2025.104030","DOIUrl":"10.1016/j.elstat.2025.104030","url":null,"abstract":"<div><div>In this work, the behavior of the dielectric breakdown voltage of insulating oils concerning variations in temperature, humidity, and contaminant concentration was established. Tests used electrodes for flat, spherical, and Verband Deutscher Elektrotechniker (VDE) type. The influence of contaminant concentration (cellulose, iron, and copper), humidity, and temperature on the breakdown voltage of the oils was determined through a four-level experimental design. Data collected in the tests were analyzed using Analysis Of Variance (ANOVA). The experimental phase of the research was carried out in the High Voltage Laboratory of Unidades Tecnológicas de Santander. The most relevant results showed that the contaminant concentration is inversely related to the oil breakdown voltage, with copper being the material with the most significant influence on the study variable. Likewise, temperature is directly related to the breakdown voltage level, with the highest levels reached when the test is conducted at 90 °C. For the three types of electrodes used, it is shown that humidity has an inverse relationship with breakdown voltage. In all cases, the highest disruption values are achieved with a moisture of 5 ppm.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104030"},"PeriodicalIF":1.9,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136274","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

A new device for monitoring deformation dynamics and droplet shrinkage kinetics (during drying) of a charged droplet suspended in air 一种监测悬浮在空气中的带电液滴的变形动力学和液滴收缩动力学（在干燥过程中）的新装置

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-20 DOI: 10.1016/j.elstat.2025.104033

A. Dokmak , T. Deleau , J.J. Letourneau , A. Maudhuit , P. Arlabosse , M.I. Ré

{"title":"A new device for monitoring deformation dynamics and droplet shrinkage kinetics (during drying) of a charged droplet suspended in air","authors":"A. Dokmak , T. Deleau , J.J. Letourneau , A. Maudhuit , P. Arlabosse , M.I. Ré","doi":"10.1016/j.elstat.2025.104033","DOIUrl":"10.1016/j.elstat.2025.104033","url":null,"abstract":"<div><div>In this study, a new device was developed to study the deformation kinetics of a pendant droplet under controlled drying conditions and in the presence of an electric field (EF). It has made it possible to investigate the deformation and air-drying kinetics of conductive and electrically charged pendant CuSO<sub>4</sub>.5H<sub>2</sub>O droplets. Various EF intensities (0–800 kV/m) and solid content concentrations (0–25 % wt/wt) are applied. Results show significant reduction (up to 42 %) in interfacial tension with increasing EF, along with a quadratic relationship between EF intensity and interfacial tension. Droplet surface area expansion and deformation are influenced by the EF intensity and the solution solids content. It has also been shown that, during drying, EF application can influence the deformation kinetics and shrinkage rate during the early drying stages, particularly at higher solid concentrations and high EF intensity, revealing new insights into droplet dynamics under EF.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104033"},"PeriodicalIF":1.9,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136273","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 of different circuit resistance measurement methods in spark discharge 火花放电中不同电路电阻测量方法的比较

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-18 DOI: 10.1016/j.elstat.2025.104034

Can Chen, Zhiyu Wang, Suijun Yang, Shuliang Ye

{"title":"Comparison of different circuit resistance measurement methods in spark discharge","authors":"Can Chen, Zhiyu Wang, Suijun Yang, Shuliang Ye","doi":"10.1016/j.elstat.2025.104034","DOIUrl":"10.1016/j.elstat.2025.104034","url":null,"abstract":"<div><div>It is generally considered that spark resistance can be determined by circuit resistance subtracted from the total resistance of the discharge circuit and circuit resistance is equal to the total resistance when the spark gap is shorted out. However, practical methods for shorting out the spark gap have not been clearly defined in existing researches. Two methods for shorting out the spark gap were elaborated, and a method for measuring circuit resistance through linear fit was developed in this paper. Experiments were conducted to compare and analyze different circuit resistance measurement methods. The method of shorting out the spark gap by wire is more recommended, compared to that by setting the electrode gap to zero. The linear fitting method avoids the problem of internal discharge in the discharge relay, but it needs to maintain consistency in the discharge environment to minimize the impact of electrostatic discharge randomness. This study offers valuable guidance for accurately measuring spark resistance, which is crucial in minimum ignition energy testing of dust clouds highly sensitive to electrostatic discharge.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104034"},"PeriodicalIF":1.9,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136280","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

Experimental study on the effect of the electrode bending angle on the dielectric-barrier discharge performance 电极弯曲角度对介质阻挡放电性能影响的实验研究

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-15 DOI: 10.1016/j.elstat.2024.104016

Yuqing Lou, Jingfeng Tang, Haoyuan Gu, Desheng Zhou

引用次数: 0

The discharge mode differences of positive DC corona between silicon and tungsten needles for electrostatic elimination application 静电消除用硅针和钨针直流正电晕放电模式的差异

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-12 DOI: 10.1016/j.elstat.2025.104031

Yanyi Wang , Yining Ge , Yong Chen , Li Wang , Xuandong Liu

{"title":"The discharge mode differences of positive DC corona between silicon and tungsten needles for electrostatic elimination application","authors":"Yanyi Wang , Yining Ge , Yong Chen , Li Wang , Xuandong Liu","doi":"10.1016/j.elstat.2025.104031","DOIUrl":"10.1016/j.elstat.2025.104031","url":null,"abstract":"<div><div>This paper investigates the discharge mode differences between non-metallic and metallic needles in the field of electrostatic elimination. An experimental measurement system for needle-plate gap discharge under positive DC voltage is established, and it particularly focuses on discharge characteristics of silicon and tungsten needles with distinct curvature radii. Attributes including pulse repetition frequency, waveform parameters and pulse uniformity in different regimes were investigated quantitatively. Experimental results reveal that, three successive regimes of silicon needle discharge can be observed, including streamer corona, glow discharge, and spark breakdown. Tungsten needle exhibits a sequential transition of streamer corona, filamentary discharge, brush, and spark breakdown. And the streamer corona regime can be further delineated into spontaneous streamer, periodic streamer, and cluster streamer. Additionally, the effect of needle curvature radius on discharge parameters is also obtained. Needles with smaller curvature radius is easier to acquire pulses with high repetition frequency, while the needle with larger curvature radius is more likely to obtain pulses with high amplitude. The disparities in the discharge regimes between silicon needles and tungsten needles can be attributed to the variations in their conductivity properties and the different ways of charge migration and dissipation induced by the spatial electric field. And the discharge needle for electrostatic elimination is recommended to work in the periodic discharge stage with good uniformity and stability.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104031"},"PeriodicalIF":1.9,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136278","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

Highly stretchable and mulfunctional sensor based on PVDF-TrFE/Fe3O4 composites nanofibres to discriminate texture characteristics 基于PVDF-TrFE/Fe3O4复合纳米纤维的高拉伸多功能纹理特征传感器

IF 1.9 4区工程技术

Journal of Electrostatics Pub Date : 2025-01-08 DOI: 10.1016/j.elstat.2025.104029

Peiyuan Wang , Jun Xue , Hong Kong , Jun Zheng , Hongying Tian

{"title":"Highly stretchable and mulfunctional sensor based on PVDF-TrFE/Fe3O4 composites nanofibres to discriminate texture characteristics","authors":"Peiyuan Wang , Jun Xue , Hong Kong , Jun Zheng , Hongying Tian","doi":"10.1016/j.elstat.2025.104029","DOIUrl":"10.1016/j.elstat.2025.104029","url":null,"abstract":"<div><div>Recently, stretchable and flexible sensors that can mimic human skin have received widespread attention. Piezoelectric nanofibres are widely used in biomedical, health detection, human-computer collaboration and motion monitoring due to their flexibility, corrosion resistance and biocompatibility. Herein, a stretchable piezoelectric multifunctional sensor based on PVDF-TrFE/Fe<sub>3</sub>O<sub>4</sub> composite nanofibres and inspired by a serpentine structure is proposed. Moreover, the fabrication method of the flexible stretchable sensor and its working principle are presented in detail. This obtained sensor reveals strong mechanical properties of a superior bending sensing characteristic at diverse bending angles, an ultimate linear sensing pressure of 80 kPa and an excellent frequency sensing range of 1–100Hz. Thus, the serpentine structure allows the sensor to detect not only planar excitation but also to respond multifunctionally to directional bending, pressure and vibration. Additionally, repeatability experiments of the sensor under different sensing characteristics verified the excellent stability and reliability of the sensor. Meanwhile, identification in different texture characteristics can be realized by this sensor. This work offers essential research value and practical significance for the sensor materials, novel structures and wearable applications of stretchable flexible sensors.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"134 ","pages":"Article 104029"},"PeriodicalIF":1.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136283","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