The Effect of High-Voltage Electrostatic Field on the Water Performance

2012 ◽  
Vol 441 ◽  
pp. 695-698
Author(s):  
Qing Wang ◽  
Jie Min ◽  
Jia Tian
Keyword(s):  
Electric Field ◽  
Physical Properties ◽  
Field Intensity ◽  
High Voltage ◽  
Electrostatic Field ◽  
Electric Field Intensity ◽  
Treatment Time ◽  
Swelling Ratio ◽  
Wool Fibers ◽  
Effect Of Treatment

Water treated by external electric field with different field intensity. The absorbency of water, the changes of dyes solubility, the effect of treatment time and the changes of wool swelling were studied. The results showed that electric field treatments can alter the water physical properties to various degrees. The absorbance of water increased with increasing electric field intensity. The swelling ratio indicated the ability of solvent to penetrate the wool fibers and to swell them.

Improving electrospinning process by numerical analysis of 3-D computer models

2019 ◽  
Vol 38 (4) ◽  
pp. 1098-1110
Author(s):  
Anna Firych-Nowacka ◽  
Krzysztof Smolka ◽  
Sławomir Wiak
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Field Intensity ◽  
Electrostatic Field ◽  
Electric Field Intensity ◽  
Computer Models ◽  
Electrospinning Process ◽  
Strength Analysis ◽  
Original Solution ◽  
Content Type

Purpose Electrospinning is a method of the polymer super thin fibres formation by the electrostatic field. The distribution of electrostatic field affects the effectiveness of the electrospinning. Design/methodology/approach This paper presents various computer models that can improve the electrospinning process. The possibilities of modelling the electrostatic field in the design of electrospinning equipment are presented. Findings In the research part, the one focussed on finding a cylinder-shaped collector structure to limit the adverse effect of an uneven distribution of the electric field intensity on the collector. Originality/value The paper concerns the improvement of the electrospinning process with the use of electrostatic field modelling. In the first part, several possible applications of electrostatic models have been indicated, thanks to which the efficiency of the process has been improved. The original solution of the collector geometry was presented, which according to the authors, in comparison with previous models, gives the most promising results. In this solution, it was possible to obtain an even distribution of the electric field intensity while removing the unfavourable effect of the field strength increase on the outer edges of the collector. The most important aspect in this paper is electric field strength analysis.

Prediction Model of Power Frequency Electric Field Intensity of Typical Transmission Line

2013 ◽  
Vol 448-453 ◽  
pp. 328-331
Author(s):  
Xin Zhao ◽  
Tao Chen ◽  
Wei Wang ◽  
Yan Hong Huang Fu
Keyword(s):  
Electric Field ◽  
Transmission Line ◽  
Field Intensity ◽  
High Voltage ◽  
Electric Field Intensity ◽  
Electromagnetic Compatibility ◽  
High Voltage Transmission Line ◽  
Power Frequency ◽  
Frequency Electric Field ◽  
High Voltage Transmission

The power frequency electric field and Electric radiation generated by high voltage transmission line have a great impact on the surrounding environment, which is one of the important research topic on environmental protection and electromagnetic compatibility technology field. In this paper, the information database of typical transmission line and tower established,and the prediction of power frequency electric field intensity of high voltage transmission line has been given by using the 3-D computational method.Then, the major factors affecting the calculation results of electric field is discussed based on the measured data and the error analysis is given.

Analysis and Calculation of Substation’s Internal Electric Field Intensity Caused by Incoming and Outgoing Lines

2013 ◽  
Vol 291-294 ◽  
pp. 2428-2431
Author(s):  
Hui Lan Jiang ◽  
Kai Zeng ◽  
Jian Min Liu ◽  
Chao Li
Keyword(s):  
Genetic Algorithm ◽  
Electric Field ◽  
Field Intensity ◽  
High Voltage ◽  
Electric Field Intensity ◽  
Transmission System ◽  
Three Phase ◽  
Power Frequency ◽  
Limited Length ◽  
Frequency Electric Field

In ultra-high voltage transmission system, the electrostatic induction generated by power frequency electric field will exerts negative effects on the electrical automation equipment within the substation and, in particular, will leads long-term harm to staffs’ health. However, researches of electric field environment in ultra-high voltage transmission system merely concentrate on calculating the electric field intensity caused by three-phase limited length wire or three-phase infinite wire within the transmission, without considering the method of calculating half-infinite wire which represents “one end is fixed, while the other end is infinite length’s wire”. Consequently, a new method named “Charge Simulation-Genetic Algorithm (CS-GA) method” which can efficiently calculate power frequency electric field inside of the substation is proposed in the paper. In CS-GA method, the effective calculating length is determined by genetic algorithm method’s optimization, which in other words, half-infinite length wire is substituted for limited length wire in calculating the electric field intensity. The simulation results indicate that CS-GA method is a relatively accurate, efficient and reasonable way on calculating the power frequency electric field inside of the substation.

Acceleration characteristics of laser ablation Cu plasma in the electrostatic field

2021 ◽  
Vol 93 (2) ◽  
pp. 20802
Author(s):  
Buren Duan ◽  
Haonan Zhang ◽  
Lizhi Wu ◽  
Zuohao Hua ◽  
Zijing Bao ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Electric Field ◽  
Field Intensity ◽  
Electrostatic Field ◽  
High Speed ◽  
Electric Field Intensity ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Iccd Camera ◽  
Cross Sectional

As a new concept of space propulsion system, laser-ablation propulsion has attracted more and more attention due to its characteristics of low power consumption, high specific impulse, variable and controllable thrust. With an aim to further raise up the movement velocity of plasma, we combine the laser with high-voltage electrostatic field to accelerate the Cu plasma induced by laser ablation. To demonstrate the acceleration characteristics of plasma under different electric field intensity, the plasma conductivity, plasma shockwave intensity and plasma plume movement process were tested using parallel electrode plate device, self-made torsion pendulum impulse test bench and high-speed ICCD camera. The results showed that the conductive current and impulse formed by the plasma obviously increased under the applied electric field. The images captured by high-speed ICCD camera showed the plasma cross-sectional area was 0.194 mm2 at 900 ns and 0.217 mm2 at 1600 ns when the electric field intensity was 0 V/mm. With the electric field intensity increased to 30 V/mm, the plasma cross-sectional area elevated to 0.280 mm2 at 900 ns and 0.288 mm2 at 1600 ns. The acquisitions prove that the idea of this paper is feasible and favorable, which provide a theoretical basis for the combination of laser ablation propulsion and electric field.

scholarly journals Factors Affecting Ion Thruster’s Performance

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Yuzhe Liu ◽  
Lidong Lin ◽  
Han Dong
Keyword(s):  
Electric Field ◽  
Field Intensity ◽  
High Voltage ◽  
Power Supply ◽  
Electric Field Intensity ◽  
High Voltage Power Supply ◽  
Factors Affecting ◽  
Ion Thrusters ◽  
Speed Sensor ◽  
Ion Wind

In this project, we investigated how ion thrusters produce propulsion and how the design of ion thrusters affects the performance of the thruster. In the experiment, we build a high voltage power supply (0- 50 kV) and foil rings to produce ion wind. When considering the design of the thruster, we focus on three variables: the volume of the space, where ions are produced and the electric field intensity. Thus, to investigate the first variable we made foil rings with different radius and change the distance between the ring and positive cathode. To determine the propulsion produced we use a speed sensor to determine the magnitude of the wind produced.

scholarly journals Survey of Electric Field Intensity and Magnetic Density at High Voltage Substations (230 kV) in Golestan Province

2020 ◽  
Vol 7 (2) ◽  
pp. 111-118
Author(s):  
Mohamad Ranjbarian ◽  
◽  
Jaleledin Saadi ◽  
Korosh Etemad ◽  
Rozita Farhadi ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Intensity ◽  
High Voltage ◽  
Electric Field Intensity ◽  
Golestan Province
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