Simulation and experimental studies of corona power loss in a dust loaded wire-duct electrostatic precipitator

Al-Hamouz, Z.; El‐Hamouz, Amer; Abuzaid, Nabil S.

doi:10.1016/j.apt.2010.10.005

Cited by 27 publications

(6 citation statements)

References 29 publications

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“…takes place in front of the anode is usually difficult to solve under the long simulation times required to reach stable glow corona. One general strategy to avoid the complexity of stable glow corona calculations is to neglect the ionization layer by assuming the surface electric field to be constant and equal to the onset electric field [6,9,27,28]. Several studies of glow corona to streamer transition can be found in the literature where this assumption, also known as Kaptzov's approximation, is used.…”

Section: Introductionmentioning

confidence: 99%

On the transition from stable positive glow corona to streamers

Liu¹,

Becerra²

2016

J. Phys. D: Appl. Phys.

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A two-dimensional numerical simulation of the transition from stable positive glow corona to streamers in coaxial cylindrical configuration is presented. The hydrodynamic model with several convection-dominated continuity equations together with Poisson equation are solved with consideration of the ionization layer. The transition from a stable positive glow corona produced under a DC voltage to streamers is investigated under a sudden change of the applied voltage. The critical rate of rise of voltage required for the transition from positive glow to streamer corona is evaluated with a voltage ramp. By introducing either physical or numerical instabilities into the model, streamers with filamentary structures are observed, which produce a sudden increase of the discharge current by more than two orders of magnitude. It is also found that the surface electric field of the corona-generating conductor deviates from the onset electric field, casting doubts about the validity of Kaptzov's approximation to evaluate the transition from stable glow to streamers.

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Section: Introductionmentioning

confidence: 99%

On the transition from stable positive glow corona to streamers

Liu¹,

Becerra²

2016

J. Phys. D: Appl. Phys.

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“…Abdel-Sattar and Singer [5], Chen and Wang [6] and Falaguasta et al [7] concluded that higher efficiency is gained by using thinner wires, but Pontius, D. H., and Sparks, L. E. [8] and Yang et al [9] showed that large size wires could improve the ESP performance. Al-Hamouz et al [10] investigated the effect of wire size on the ESP power loss and showed that power loss increased with decreased wire size. The effect of wire separations on the I-V characteristics was numerically studied by Lami et al [11] and concluded that the maximum current increased with increasing wire separation, while Ruttanachot et al [12] concluded that distance between wires had an insignificant influence on the ESP performance.…”

Section: Introductionmentioning

confidence: 99%

“…Ruttanachot et al [12] and Arif et al [13] demonstrated that the influence of the collection plate distance on the efficiency is greater than that of the wires spacing. Al-Hamouz et al [10] concluded that reducing the gap between plates resulted in an increase in the corona power loss due to the reduction of the corona onset voltage. The main reason for the diverse conclusions in investigating the various parameters affecting the performance of ESP is that different design criteria and operating conditions have been employed.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of the Effects of some Geometrical Parameters on the Performance of Wire-Plate Electrostatic Precipitator

Latif¹,

Kadhim²,

Ali

2021

eijs

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Some geometric parameters affecting the performance of a wire-plate electrostatic precipitator (ESP) are investigated theoretically. A numerical model was built to investigate the influence of the discharge wire size, wire separation, collector plates spacing, and roughness factor on the ESP performance. The results show that thinner wires emit higher current than larger ones at the same applied voltage, which would be suitable for low voltage power supply to generate the desired current density at the collecting electrodes. The results also show that, as the discharge electrodes get closer, the corona gets suppressed, resulting in a diminished corona current flow. On the other hand, as the distance between electrodes increases, the total current density decreases, leading to a less efficient ESP performance. Narrow spacing between collector plates gives a better performance. With regard to the effect of the roughness factor, the results revealed that the emitted current is strongly affected by the wires physical conditions.

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“…Several methods are used for the simulation of electrical characteristics in precipitators with clean air such as finite difference method (FDM) [8,9], finite element method (FEM) with FDM [10], boundary element method (BEM) combined with the method of characteristics [11], BEM with FDM [12], FEM [13]. Also, charge simulation method (CSM) [14], FEM combined with the method of characteristics [15][16][17], and finite volume method [18,19] are implemented to solve the corona problem.…”

Section: Introductionmentioning

confidence: 99%