Using an optical fibre anemometer to measure the speed of the electric wind in a negative polarity, atmospheric corona discharge

Electronic corona may be obturated when dust load at inlet of ESP is more than 500g/Nm3, it will influence dedusting efficiency. Through analysis on current and electric intensity, we set up experiment device and use WS corona wire, fishbone corona wire, long dentation corona wire, V15 wire and RS corona wire to test their volt-ampere characteristics. This experiment indicates that the corona current produced by V15 and long dentation corona wires is higher, i.e. we can get higher corona current under same voltage to produce stronger corona discharge and electric wind, and it has little possibility to occur corona obturation in electric field. We can get the conclusion that V-typed corona wire is more suitable and economic for high dust load application.

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Interaction between electrospray using ionic liquid and simultaneous corona discharge under positive and negative polarity

Physics of Plasmas ◽

10.1063/1.5099470 ◽

2019 ◽

Vol 26 (7) ◽

pp. 073511 ◽

Cited By ~ 3

Author(s):

Yuntao Guo ◽

Shipeng Li ◽

Zhiwen Wu ◽

Kangwu Zhu ◽

Yuning Han ◽

...

Keyword(s):

Ionic Liquid ◽

Corona Discharge ◽

Negative Polarity

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The Study of EHD Flow:Velocity and electrical power

MATEC Web of Conferences ◽

10.1051/matecconf/201815602016 ◽

2018 ◽

Vol 156 ◽

pp. 02016

Author(s):

Sumariyah ◽

Kusminarto ◽

Arief Hermanto ◽

Pekik Nuswantoro

Keyword(s):

Electric Field ◽

Corona Discharge ◽

High Voltage ◽

Electrical Power ◽

Negative Polarity ◽

Ring Electrode ◽

Positive Polarity ◽

Concentric Ring ◽

Single Ring ◽

Gas Medium

Electrohydrodynamics (EHD) flow is the yield of the corona discharge. Corona discharge characterized by electrical phenomena that occur together in a gas medium under the influence of an electric field. In corona discharge, the electric field is not homogeneous due to the geometry of the electrode configuration. In this study, a pin-multi concentric ring electrode (P-MRE) and pin-single ring electrode (P-SRE) has been used as electrodes configuration. The objective of this research is to get the velocity of EHD flow and determining the electrical power of the EHD flow. EHD flow generated by a DC high voltage (up to 5 kV). The pin electrode was connected to a positive polarity and electrode ring/multi-concentric rings to negative polarity. Based on our result, we make a comparison of two types of corona configurations. The results were obtained that, EHD flow velocities with the P-MRE was greater than the P-SRE for the same distance and voltage. We found that u-P characteristics of EHD flow with the P-MRE and P-SRE follow relationship as u ∞ P1/3.

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