Negative corona inception voltages in rod-plane gaps at various air pressures and humidities

Bian, Xingming; Meng, Xiaobo; Wang, Liming; MacAlpine, J.M.K.; Guan, Zong‐Jie; Hui, Jianfeng

doi:10.1109/tdei.2011.5739468

Cited by 61 publications

(32 citation statements)

References 29 publications

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“…Fig. 5 shows the variation of the discharge current with the [5,7,8,10,15], the mobility of charge carriers [16,17], and the plasma chemistry [18]. At higher % RH, the discharge current might be increased with RH due to the electric conductivity enhancement.…”

Section: Resultsmentioning

confidence: 99%

An experimental study of relative humidity and air flow effects on positive and negative corona discharges in a corona-needle charger

Yawootti

Intra

Tippayawong

et al. 2015

Journal of Electrostatics

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Section: Resultsmentioning

confidence: 99%

An experimental study of relative humidity and air flow effects on positive and negative corona discharges in a corona-needle charger

Yawootti

Intra

Tippayawong

et al. 2015

Journal of Electrostatics

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“…The increase in the RH of the surrounding ESP enhanced the particle cohesiveness to the collecting plates, due to water adsorption on the particle surface. In addition, the electric field near the collecting plate increased in strength, because the electrons emitted from the corona discharge decayed more slowly with increasing RH, which may be beneficial to particle removal (Abdel-Salam 1992;Bian et al 2011;Wang and You 2013).…”

Section: Removal Performance Of the Ultrafine Particles Under Variousmentioning

confidence: 99%

“…Moreover, a wet-ESP can maintain its particle removal capabilities over the long term, due to the water film on the collection plate of the ESP that continuously removes the adhered dust (Lin et al 2010;Nouri et al 2010;Lin et al 2013). Especially, under high-humidity conditions in ESP, the particle cohesiveness increases due to water adsorption on the particle surface, and the electric field strength is elevated near the collecting plate, which improves the collection performance of ESPs (Nouri et al 2010;Bian et al 2011;Wang and You 2013;Chen et al 2014). Dor et al (1998) investigated two wet-ESP geometries: a wire-to-plate geometry and a multineedle-to-plate geometry; a suitable electrode arrangement for NOx removal was suggested.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Electrostatic Precipitator System Using a Wet-Porous Electrode Array

Kim

Lee

et al. 2015

Aerosol Science and Technology

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The authors introduce a novel electrostatic precipitator using a wet-porous electrode (WPE) array, for application to various work processes (e.g., molding and extrusion), to improve the removal performance of ultrafine particles and water-soluble gaseous pollutants generated during manufacturing. The WPE array electrostatic precipitator (WPE-ESP) consists of an ionization component for particle charging and a collection component equipped with the WPE array to maintain a high humidity environment. The performance of the WPE-ESP was evaluated in terms of the removal efficiency of airborne particles and water-soluble gases under ESP operating conditions in which the ionization charge current, the applied electric field strength of the collection component, and the relative humidity (RH) were varied. The collection efficiency of the WPE-ESP was enhanced by increasing the RH, due to water adsorption on the particle surface and the enhanced electric field strength near the collecting plate. The maximum total collection efficiency of the ESP system was~99.2% for a 73% RH collection environment, which was approximately 3.3% higher than that of conventional dry-type ESP (C-ESP). The proposed system also removed sulfur dioxide (SO 2 ), a representative source (90.7%) of undesirable emissions during manufacturing processes, and mitigated ozone (O 3, <10 ppb), a by-product of the corona discharge in the ESP, regardless of the field strength. The proposed WPE-ESP included a simple mounting system; additionally, the system generated a more uniform water film than that of wet-ESPs. Thus, the WPE-ESP shows great potential for application to workplaces and machining devices that require the simultaneous removal of ultrafine particles and water-soluble gaseous pollutants.

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“…In the following other figures, the effective value of AC voltage is taken. The data of the positive and negative DC corona inception voltages in the Figure 2 are taken from references [10][11]. The AC corona inception voltages decrease with the rise of humidity.…”

Section: Ac Corona Inception Voltage Related To Pressure and Hummentioning

confidence: 99%

Influence of pressure and humidity on the amplitude — Phase distribution of AC corona pulse

Meng

Hui

Mei

et al. 2013

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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Corona problem is one of the important problems in the design and operation of the transmission lines. The corona discharge of high voltage transmission lines, results in power loss, radio interference and audible noise, which become more serious at the high altitudes. Besides, it has a great influence on the safe and robust operation of high voltage apparatus. A study carried out in the chamber made of perspex, was that AC corona characteristics varied with air pressure and humidity through the rod plane electrodes. The experiments showed that the inception voltage of AC corona was reduced with air pressure decreasing or humidity increasing. Meanwhile, the amplitude -phase distribution of AC corona pulse was displayed under different air pressure and humidity. Under low humidity (RH=25% or 55%), the streamer pulses only appear in the rise edge of positive half cycle, and the number of streamer pulses is few. The negative streamer pulses occur around the peak value of the negative half cycle. The streamer pulses appear in the rise and fall edge of positive half cycle at the same time with high humidity (RH=85%), and the number of streamer pulses increases obviously. When the humidity is higher (RH=95%), the streamer pulses appear only in the fall edge of positive half cycle. Furthermore, the negative streamer pulses around the peak of the negative half cycle also disappear.

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Negative corona inception voltages in rod-plane gaps at various air pressures and humidities

Cited by 61 publications

References 29 publications

An experimental study of relative humidity and air flow effects on positive and negative corona discharges in a corona-needle charger

An experimental study of relative humidity and air flow effects on positive and negative corona discharges in a corona-needle charger

Development of a Novel Electrostatic Precipitator System Using a Wet-Porous Electrode Array

Influence of pressure and humidity on the amplitude — Phase distribution of AC corona pulse

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Negative corona inception voltages in rod-plane gaps at various air pressures and humidities

Cited by 61 publications

References 29 publications

An experimental study of relative humidity and air flow effects on positive and negative corona discharges in a corona-needle charger

An experimental study of relative humidity and air flow effects on positive and negative corona discharges in a corona-needle charger

Development of a Novel Electrostatic Precipitator System Using a Wet-Porous Electrode Array

Influence of pressure and humidity on the amplitude &#x2014; Phase distribution of AC corona pulse

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Influence of pressure and humidity on the amplitude — Phase distribution of AC corona pulse