Effect of barbed tubular electrode corona discharge EHD flow on submicron particle collection in a wide-type ESP

Yan, Dongjie; Zhang, Ziang; Gong, Hao; Yu, Yang

doi:10.1016/j.elstat.2020.103545

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…Similarly, previous papers from our laboratory have analyzed the flow field in plane B. It was found that a high-speed region exists at the same position as plane A, and the flow field exhibited an obvious partition phenomenon [40].…”

Section: Analysis Of Flow Field Characteristicsmentioning

confidence: 59%

EHD flow auxiliary particle collection in HVDC electrostatic precipitator based on PIV flow visualization technology

Yan¹,

Zhang²,

Li³

et al. 2023

Phys. Scr.

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The electrostatic precipitator (ESP) is modified with the aid of an EHD flow in high voltage direct current (HVDC) to trap submicron-sized and ultra-high resistivity particles. In this study, the modified method for micron spherical silica was developed and optimized by particle image velocimetry (PIV) and numerical simulation. Meanwhile, scattering images of particle movement were obtained by laser and CCD camera. These results showed that the fine particles were driven by EHD flow towards the cavity. The D50 and D90 of particles measured by using the SYNC-type particle size analyzer inside the auxiliary dust removal cavity were 0.635 μm and 1.178 μm, which were much smaller than those of the particles deposited on the rear side of the cavity. The particle morphology was observed by scanning electron microscope (SEM), which indicated that multi-layer particles were agglomerating on the surface of the plate electrodes. However, particles were distributed in loose mono-layer in the cavity with no obvious agglomeration. The results showed that the modified method improved the efficiency.

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Section: Analysis Of Flow Field Characteristicsmentioning

confidence: 59%

EHD flow auxiliary particle collection in HVDC electrostatic precipitator based on PIV flow visualization technology

Yan¹,

Zhang²,

Li³

et al. 2023

Phys. Scr.

Self Cite

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“…This section reviews some of the information found in the scientific literature. In [ 89 ], a CCD camera was used to capture images of tracer particles to study the electrohydrodynamic (EHD) flow generated by corona discharges produced in an electrostatic precipitator. In [ 90 ], the spatial distribution of air temperatures due to corona discharges was obtained using a CCD camera.…”

Section: Ultraviolet (Uv) and Visible Imaging Applied To Corona Disch...mentioning

confidence: 99%

Application of Image Sensors to Detect and Locate Electrical Discharges: A Review

Ruiz

2022

Sensors

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Today, there are many attempts to introduce the Internet of Things (IoT) in high-voltage systems, where partial discharges are a focus of concern since they degrade the insulation. The idea is to detect such discharges at a very early stage so that corrective actions can be taken before major damage is produced. Electronic image sensors are traditionally based on charge-coupled devices (CCDs) and, next, on complementary metal oxide semiconductor (CMOS) devices. This paper performs a review and analysis of state-of-the-art image sensors for detecting, locating, and quantifying partial discharges in insulation systems and, in particular, corona discharges since it is an area with an important potential for expansion due to the important consequences of discharges and the complexity of their detection. The paper also discusses the recent progress, as well as the research needs and the challenges to be faced, in applying image sensors in this area. Although many of the cited research works focused on high-voltage applications, partial discharges can also occur in medium- and low-voltage applications. Thus, the potential applications that could potentially benefit from the introduction of image sensors to detect electrical discharges include power substations, buried power cables, overhead power lines, and automotive applications, among others.

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“…This method involves measuring the value of the corona discharge at each voltage value, where higher corona current values imply more deposition. The corona discharge, however, is not linearly dependent on the applied voltage alone, with ion mobility playing an important role in affecting the amount of corona discharge [10,14]. Other parameters, including electrode designs and their respective layout, can also affect the corona discharge.…”

Section: Current-voltage Characteristicsmentioning

confidence: 99%

“…Optimizing the design and layout of both emitting and collection electrodes inside an ESP is the main factor affecting the voltage-current curve, a major ESP performance determinant when the temperature, pressure, and dust properties are constant [37]. Many of the reviewed research compared the performance of industrial plants and experimental setups [6,14,34,35,[38][39][40][41][42] with numerical simulations, and good agreements often exist. It is worth mentioning, however, that the optimum design parameters are extremely sensitive depending on the surrounding environment and the specific application.…”

Section: Optmization Of Geometrical Parametersmentioning

confidence: 99%

Evaluating Performance Indices of Electrostatic Precipitators

Badran

Mansour

2022

Energies

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Utilizing electrostatic precipitators (ESPs) is an efficient particle removal method that sees a wide usage in industrial environments. This is mainly because of the low drop of the pressure flow, while retaining high collection efficiency, alongside being cost-effective. This paper reviewed previous works concerning optimizing the performance of single- and multi-stage ESPs by changing several design parameters and evaluating the effects on different performance indices, such as the corona power ratio, current-voltage characteristics, and overall collection efficiency. The review then goes through several modelling methodologies, showcasing their shortcomings and developments, as well as the relationship between the electrohydrodynamic (EHD) flow and the precipitation performance. The performance effects of using different electrode configurations and designs in terms of the number of electrodes, relative dimensions, spacings, channel lengths, and overall design were also reviewed.

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Effect of barbed tubular electrode corona discharge EHD flow on submicron particle collection in a wide-type ESP

Cited by 10 publications

References 22 publications

EHD flow auxiliary particle collection in HVDC electrostatic precipitator based on PIV flow visualization technology

EHD flow auxiliary particle collection in HVDC electrostatic precipitator based on PIV flow visualization technology

Application of Image Sensors to Detect and Locate Electrical Discharges: A Review

Evaluating Performance Indices of Electrostatic Precipitators

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