A review on optimizing potentials of high voltage pulse breakage technology based on electrical breakdown in water

Gao, Yan; Fu, Huiwen; Zhao, Yuemin; Sun, Zongsheng; Zhang, Bo

doi:10.1016/j.powtec.2022.117293

Cited by 4 publications

(2 citation statements)

References 88 publications

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“…High-voltage breakdown of water is actively discussed as the most traditional medium for the implementation of discharge-pulse technologies. In [21], the electrical characteristics of water breakdown are considered, and the effect of electrode geometry and voltage polarity on high-voltage breakdown is reported. But the authors see the future use of high-voltage breakdown exclusively as a tool for crushing solid bodies in an aqueous environment.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Synthesis of nanocarbon by high-voltage breakdown of hydrocarbons

Kuskova,

Malyushevskaya,

Prystash

et al. 2023

EEJET

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The object of research is the mechanisms of synthesis of nanocarbon structures in the process of electric high-voltage breakdown of hydrocarbons. The problem to be solved is the purposeful synthesis of various types of nanocarbon with small losses of raw materials. Mechanisms of nanocarbon formation in the process of high-voltage electric breakdown of hydrocarbons have been established. It is shown that a high-voltage breakdown leads to a cascade of chemical transformations. As a result of transformations, lower gaseous hydrocarbons are formed due to the destruction of molecules and higher ones – as a result of polymerization, and as a result of dehydrocyclization and polymerization with the participation of metal catalysts – various carbon nanostructures. The possibility of targeted synthesis of fullerene-like structures, nanotubes with diameters from 10 to 50 nm, nanofibers, and films is demonstrated. Experimental studies have confirmed that the qualitative and quantitative composition of nanocarbon can be varied in a wide range. With an increase in the number of carbon atoms or the number of C–C bonds in the raw material molecules, other things being equal, the practical yield of solid nanocarbon increases. It was determined that the synthesis of structured nanocarbon from a mixture of hydrocarbon gases, formed as a result of high-voltage breakdown of liquid hydrocarbons, actively occurs on the nickel-chromium catalytic surface. An increase in the area of the catalytic deposition surface leads to an increase in the yield of nanocarbon. The study of the ability of the obtained nanocarbon samples to absorb electromagnetic radiation confirmed the potential of the method of high-voltage breakdown of hydrocarbons for the synthesis of materials that weaken electromagnetic radiation at a frequency of 25 to 38 GHz. The greatest weakening is observed for samples consisting mainly of carbon nanotubes and nickel nanoparticles

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Synthesis of nanocarbon by high-voltage breakdown of hydrocarbons

Kuskova,

Malyushevskaya,

Prystash

et al. 2023

EEJET

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“…According to the results of the experimental study of the shock wave characteristics of discharge in liquid carried out by Touya [20] and others, the empirical equation for the shock compressive stress P in the direction of the hole ring is shown in Equation (1).…”

Section: Shock Pressure From Electric-wire Explosionmentioning

confidence: 99%

Simulation Analysis of the Fracture of Reinforcement Concrete Columns Using High-Voltage Pulse Discharge

Wang,

Sun,

Wang

2023

Buildings

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High-voltage pulse discharge (HVPD) in liquid technology, when applied to the demolition of concrete structures, has the advantages of green environmental protection, saving energy, emission reduction, safety, reliability, etc. However, research on the influence law of various factors on the effect of crushing is still insufficient. Therefore, this manuscript equated the shock load caused by HVPD to the blasting load and introduced a cohesive zone model based on ABAQUS. The whole process of a concrete column being subjected to a shock wave generated by pulse power discharge was simulated and analyzed. To validate the model’s reasonableness, a comparison and analysis were conducted with the results of experimental studies on concrete column fractures caused by HVPD in liquid. The study further investigated the influence of three parameters—one-side longitudinal reinforcement ratio, volume hoop ratio, and concrete grade strength—on the degree of fracture of the concrete column with a single row of holes (i.e., the width of transverse cracks or longitudinal cracks around the drilled holes). The simulation results revealed that the width of transverse cracks decreases significantly with the increase in the one-side longitudinal reinforcement ratio of the column, while the width of longitudinal cracks decreases substantially with the increase in the volume hoop ratio of the column. In addition, the degree of fracture of concrete columns decreases slightly with the increase in the concrete grade strength. Based on the simulation results, the mathematical expressions between the crack widths (transverse crack width and longitudinal crack width) and the key parameters, such as the one-side longitudinal reinforcement ratio of the column, volume hoop ratio of the column, and concrete grade strength, were established, respectively. These expressions facilitate their practical application in engineering practice.

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