Results 31 to 40 of about 81,247 (279)

Experimental Investigation of the Breakdown Voltage of CO2, N2, and SF6 Gases, and CO2–SF6 and N2–SF6 Mixtures under Different Voltage Waveforms

open access: yesEnergies, 2018
This paper is devoted to a comparison study of the breakdown voltage of CO2, N2, and SF6 gases, and CO2–SF6 and N2–SF6 mixtures under different voltage waveforms, namely AC, DC, and lightning impulse voltages, in point–plane and sphere–sphere electrode ...
Abderrahmane Beroual   +2 more
doaj   +1 more source

The increasing atmospheric burden of the greenhouse gas sulfur hexafluoride (SF6)

open access: yesAtmospheric Chemistry and Physics, 2020
. We report a 40-year history of SF6 atmospheric mole fractions measured at the Advanced Global Atmospheric Gases Experiment (AGAGE) monitoring sites, combined with archived air samples, to determine emission estimates from 1978 to 2018.
P. Simmonds   +27 more
semanticscholar   +1 more source

Recent Development of Two Alternative Gases to SF6 for High Voltage Electrical Power Applications

open access: yesEnergies, 2021
For many years, SF6 has been the preferred dielectric medium in electrical power applications, particularly in high voltage gas-insulated equipment. However, with the recognition that SF6 has an extremely long atmospheric lifetime and very high global ...
J. Owens   +4 more
semanticscholar   +1 more source

Study on the thermal decomposition reaction process and kinetics of SF6 and tungsten [PDF]

open access: yesE3S Web of Conferences, 2023
The thermal reaction of SF6 with tungsten powder was investigated by thermogravimetry (TG) and differential scanning calorimetry (DSC), combined with the characterization of solid decomposition products of SF6 and tungsten by SEM, EDS, XPS and Raman ...
Xu Mengyuan   +10 more
doaj   +1 more source

A Selected Ion Flow Tube Study of the Reactions of Several Cations with the Group 6B Hexafluorides SF6, SeF6, and TeF6 [PDF]

open access: yes, 2000
The first investigation of the ion chemistry of SeF\(_6\) and TeF\(_6\) is presented. Using a selected ion flow tube, the thermal rate coefficients and ion product distributions have been determined at 300 K for the reactions of fourteen atomic and ...
Jarvis, G. K.   +3 more
core   +1 more source

Selective adsorption of CO2 and SF6 on mixed-linker ZIF-7-8s: The effect of linker substitution on uptake capacity and kinetics

open access: yes, 2021
A series of mixed-linker Zeolitic Imidazolate Framework(ZIF)-7-8s constructed from different amounts of benzimidazolate (bIm) and 2-methylimidazolate (mIm) linkers were synthesized in this study.
M. Åhlén   +3 more
semanticscholar   +1 more source

Physics of reshock and mixing in single-mode Richtmyer-Meshkov instability [PDF]

open access: yes, 2007
The ninth-order weighted essentially nonoscillatory (WENO) shock-capturing method is used to investigate the physics of reshock and mixing in two-dimensional single-mode Richtmyer-Meshkov instability to late times.
Don, Wai Sun   +2 more
core   +1 more source

Quantifying transport into the lowermost stratosphere using simultaneous in-situ measurements of SF6 and CO2 [PDF]

open access: yes, 2008
The seasonality of transport and mixing of air into the lowermost stratosphere (LMS) is studied using distributions of mean age of air and a mass balance approach, based on in-situ observations of SF6 and CO2 during the SPURT (Spurenstofftransport in der
Birner, Thomas   +4 more
core   +1 more source

Performance evaluation of ductless personalized ventilation in comparison with desk fans using numerical simulations [PDF]

open access: yes, 2020
The performance of ductless personalized ventilation (DPV) was compared to the performance of a typical desk fan since they are both stand-alone systems that allow the users to personalize their indoor environment.
Alsaad, Hayder (Dr.-Ing.)   +1 more
core  

Research progress on SF6 emission reduction methods and separation recovery

open access: yes工程科学学报
A potent greenhouse gas, SF6 has a global warming potential far exceeding that of CO2. Further, its stability in the atmosphere renders it a persistent threat to the climate.
Weihua LIU   +5 more
doaj   +1 more source

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