Positive corona inception in point-plane gaps as influenced by a surrounding dielectric enclosure

Abdelsalam, Mohamed; Hashem, Azza Abdel-Rahman

doi:10.1088/0022-3727/39/24/012

Cited by 5 publications

(1 citation statement)

References 10 publications

(11 reference statements)

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“…It has been previously assumed [8] to equal 1/2. This model was applied before [9] for calculating the corona onset voltage V 0+ on coated and bare conductors in conductor-to-plane gaps and how V 0+ is influenced by atmospheric humidity [10] in wire-to-plane gaps, by temperature [4] in rod-to-plane gaps and by a dielectric enclosure [11] surrounding a stressed point-plane gap. Here, it is applied for coaxial-cylinder and wire-plane ESP configurations.…”

Section: Positive Coronamentioning

confidence: 99%

Corona-induced pressures, potentials, fields and currents in electrostatic precipitator configurations

Abdel‐Salam¹,

Nakano²,

Mizuno³

2007

J. Phys. D: Appl. Phys.

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This paper is aimed at assessing analytically the dc corona induced pressures in wire-cylinder and wire-plate electrostatic precipitator configurations. This calls for solving the equations describing the corona discharge and the force balance for static gas equilibrium provided that the corona onset voltage and the space-charge-free field values are calculable. The calculated pressure and potential distributions along the gap axis in air and nitrogen at atmospheric pressure agreed well with those measured previously. The calculated corona current density values agreed reasonably with those measured for a high-temperature high-pressure wire-cylinder precipitator. The analytically calculated positive and negative dc corona onset voltages for wire-duct precipitators following proposed criteria based on discharge physics are in good agreement with those measured experimentally at atmospheric and lower pressures.

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Section: Positive Coronamentioning

confidence: 99%

Corona-induced pressures, potentials, fields and currents in electrostatic precipitator configurations

Abdel‐Salam¹,

Nakano²,

Mizuno³

2007

J. Phys. D: Appl. Phys.

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Digital time-resolved optical measurement of discharge currents in long air gaps

Yue

2013

Review of Scientific Instruments

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Shortcomings in the dynamic range and the frequency bandwidth of current diagnostic methods mean that measurement of the time-resolved discharge current in a long air gap discharge is still a serious problem. This work presents data from a novel discharge current sensor that takes the parameters required to determine the accuracy of the current measurement into account. The design of a coaxial current sensor with ±0.7% accuracy and a bandwidth of 75 MHz is presented. A digital optical fiber transmission system with a bandwidth that exceeds 100 MHz is used to transmit the signal. To demonstrate the efficiency of the whole system, experiments using a rod-plane discharge geometry with 2 m and 4 m air gap lengths are performed to analyze the measured current data in comparison with that taken from synchronized high-speed photographs. The results demonstrate that the investigated experimental set-up improves substantially the understanding of the fundamental mechanisms of long air gap discharges.

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Culturing of cells as influenced by exposure to AC and DC fields

Abdelsalam

Nakano²,

Tanino

et al. 2008

J. Phys.: Conf. Ser.

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Positive corona inception in point-plane gaps as influenced by a surrounding dielectric enclosure

Cited by 5 publications

References 10 publications

Corona-induced pressures, potentials, fields and currents in electrostatic precipitator configurations

Corona-induced pressures, potentials, fields and currents in electrostatic precipitator configurations

Digital time-resolved optical measurement of discharge currents in long air gaps

Culturing of cells as influenced by exposure to AC and DC fields

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