Results 11 to 20 of about 9,957,628 (348)

Evaluation of Ozone Generation in Volume Spiral-Tubular Dielectric Barrier Discharge Source

open access: yesEnergies, 2020
Ozone, due to its high reactivity cannot be stockpiled, and thus requires to be generated on-demand. The paper reports on laboratory studies of O3 generation in a volume dielectric barrier discharge (DBD) tubular flow-through system with a coaxial-spiral
Pawel Zylka
doaj   +1 more source

Multichannel surface discharge switch [PDF]

open access: yesConference on Electrical Insulation & Dielectric Phenomena - Annual Report 1982, 1982
The performance of a multichannel surface discharge switch has been investigated as a function of the dielectric material. The switch operates at 45 kV and transfers 180 joules per shot at a rate of 1.2 pps in ambient air. Dielectrics presently under investigation include Delrin, Blue Nylon, Kapton, Lucite, G-10, Macor ceramic, and two forms of boron ...
D. Johnson, M. Kristiansen
openaire   +1 more source

Discharge Characteristics and Numerical Simulation of the Oil–Gas Surface under DC Voltage

open access: yesEnergies, 2023
Low insulation strength at the oil–gas surface due to oil leakage and partial discharge of oil-immersed power equipment is a major threat to the safe and reliable operation of power systems.
Yuanxiang Zhou   +4 more
doaj   +1 more source

The Effect of Thermal and Moisture Stress on Insulation Deterioration Law of Ionic Contaminated High-Voltage Printed Circuit Board of Electronic Power Conditioner

open access: yesEnergies, 2022
Since the electronic power conditioner (EPC) is a crucial part applied of a Space Travelling-wave Tube Amplifier (STWTA), the reliability issue must be considered.
Cong Hu   +6 more
doaj   +1 more source

Surface Discharge Characteristics and Numerical Simulation in C4F7N/CO2 Mixture

open access: yesApplied Sciences, 2023
The environmentally friendly gas C4F7N has been considered a potential replacement gas for SF6 due to its excellent insulation. At present, research on C4F7N and its mixture mainly focuses on its insulation performance, but few people study its surface ...
Xinfeng Yan   +4 more
doaj   +1 more source

AC Volume Breakdown and Surface Flashover of a 4% NovecTM 4710/96% CO2 Gas Mixture Compared to CO2 in Highly Nonhomogeneous Fields

open access: yesEnergies, 2020
AC pre-discharge currents, breakdown, and flashover voltage measurements are reported in a 10 mm needle-plane arrangement in a 4% NovecTM 4710/96% CO2 gas mixture and compared with CO2 for pressures up to 8.8 bar abs.
Houssem Eddine Nechmi   +3 more
doaj   +1 more source

Surface Discharges and Flashover Modelling of Solid Insulators in Gases

open access: yesEnergies, 2020
The aim of this paper is the presentation of an analytical model of insulator flashover and its application for air at atmospheric pressure and pressurized SF6 (Sulfur Hexafluoride). After a review of the main existing models in air and compressed gases,
Mohammed El Amine Slama   +2 more
doaj   +1 more source

Development of low-temperature sterilization device using atmospheric pressure air plasma with circulating flow

open access: yesMechanical Engineering Journal, 2015
Medical instruments are generally sterilized using high-pressure steam, ethylene oxide gas, gamma radiation, or electron beams. However, such conventional methods entail many shortcomings such as limitations of applicable materials, high temperature ...
Daisuke YOSHINO   +3 more
doaj   +1 more source

Discharge estimation in a backwater affected meandering river [PDF]

open access: yes, 2011
Variable effects of backwaters complicate the development of rating curves at hydrometric measurement stations. In areas influenced by backwater, single-parameter rating curve techniques are often inapplicable.
Hidayat, H.   +4 more
core   +4 more sources

Study on the ageing of insulators based on the surface charge accumulation process

open access: yesThe Journal of Engineering, 2019
In order to study the transient motion of the space charge around the air tower insulator and the charge distribution of the insulator, a two-dimensional mixed numerical model of the insulator string based on chemical reaction is proposed. The simulation
Gao Yaochong   +6 more
doaj   +1 more source

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