Experimental studies on the power–frequency breakdown voltage of CF3I/N2/CO2 gas mixture

2017 ◽  
Vol 121 (10) ◽  
pp. 103303 ◽  
Author(s):  
Xiaoxing Zhang ◽  
Shuangshuang Tian ◽  
Song Xiao ◽  
Yi Li ◽  
Zaitao Deng ◽  
...  
Keyword(s):  
Breakdown Voltage ◽  
Experimental Studies ◽  
Gas Mixture ◽  
Co2 Gas ◽  
Power Frequency

scholarly journals Experimental Study on Power Frequency Breakdown Characteristics of C4F7N/CO2 Gas Mixture Under Quasi-Homogeneous Electric Field

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 19100-19108 ◽  
Author(s):  
Xiaoxing Zhang ◽  
Qi Chen ◽  
Ji Zhang ◽  
Yi Li ◽  
Song Xiao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Electric Field ◽  
Gas Mixture ◽  
Homogeneous Electric Field ◽  
Co2 Gas ◽  
Power Frequency

scholarly journals Effect of oxygen on power frequency breakdown voltage and decomposition characteristics of the C5F10O/N2/O2 gas mixture

RSC Advances ◽  
2019 ◽  
Vol 9 (33) ◽  
pp. 18963-18970 ◽  
Author(s):  
Yue Zhang ◽  
Xiaoxing Zhang ◽  
Yi Li ◽  
Yalong Li ◽  
Qi Chen ◽  
...  
Keyword(s):  
Breakdown Voltage ◽  
Carbon Deposition ◽  
Environmentally Friendly ◽  
Gas Mixture ◽  
Power Frequency ◽  
New Type ◽  
High Insulation ◽  
Effect Of Oxygen

C5F10O gas mixture is a SF6 potential substitute with high insulation strength and is a new type of environmentally friendly insulating gas. By adding oxygen to C5F10O gas mixture, insulation strength can be improved and carbon deposition can be suppressed.

Experimental studies on power frequency breakdown voltage of CF3I/N2 mixed gas under different electric fields

2016 ◽  
Vol 108 (9) ◽  
pp. 092901 ◽  
Author(s):  
Xiaoxing Zhang ◽  
Song Xiao ◽  
Yefei Han ◽  
Yann Cressault
Keyword(s):  
Electric Fields ◽  
Breakdown Voltage ◽  
Experimental Studies ◽  
Mixed Gas ◽  
Power Frequency

Experimental Studies on Insulation and Arc Extinguishing Performance of C5F10O/CO2 Gas Mixture

2021 ◽  
Author(s):  
Xiaonan Wang ◽  
Zhe Ye ◽  
Dingxin Liu ◽  
Jialin Liu ◽  
Huan Yuan ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Gas Mixture ◽  
Co2 Gas

scholarly journals Experimental Study on Compatibility of Eco-Friendly Insulating Medium C5F10O/CO2 Gas Mixture With Copper and Aluminum

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 83994-84002 ◽  
Author(s):  
Yalong Li ◽  
Yue Zhang ◽  
Yi Li ◽  
Feng Tang ◽  
Qishen Lv ◽  
...  
Keyword(s):  
Experimental Study ◽  
Gas Mixture ◽  
Co2 Gas

Improved chamber for the isolation of anaerobic microorganisms

1976 ◽  
Vol 4 (1) ◽  
pp. 40-45
Author(s):  
M E Cox ◽  
J I Mangels
Keyword(s):  
Anaerobic Bacteria ◽  
Gas Mixture ◽  
Anaerobic Conditions ◽  
Co2 Gas ◽  
Anaerobic Microorganisms ◽  
The Media ◽  
To Receive ◽  
Latex Rubber

A small portable chamber for the recovery of anaerobic bacteria is described. This rigid chamber is constructed of clear acrylic with dimensions of 30 inches (ca. 76.2 cm) wide, 18 inches (ca. 44.7 cm) deep, and 18 inches (ca. 44.7 cm) high. Conventional bacteriological techniques can be used inside the chamber to efficiently isolate strict anaerobic organisms. An adapter allows the attachment of a standard anaerobic jar to the outside of the chamber. The jar can be used to store reduced media. Once the jar is attached to the chamber and the media is removed to the interior of the chamber, the jar is available to receive inoculated media. The anaerobic jar can then be removed from the chamber, without contaminating the jar or chamber with oxygen, and be placed in a conventional 37degreesC incubator. This chamber also allows the microbiologist to process cultures without wearing gloves as was necessary with previous anaerobic chambers. Air-tight latex rubber sleeves seal around the microbiologists arms and to the armport flange of the chamber to prevent the introduction of oxygen into the chamber. Anaerobic conditions are maintained by circulating a 80% N2, 10% H2, 10% CO2 gas mixture through alumina pellets coated with palladium. This study indicates that anaerobic conditions obtained in this chamber are sufficient for recovery of obligate anaerobes.

Investigation of N2-Composition in CO2 Gas Mixture for EOR Purpose

2018 ◽  
Author(s):  
E. Ghanaatpisheh Senani ◽  
H. Behmanesh ◽  
S. Kord ◽  
S. Bairamzadeh
Keyword(s):  
Gas Mixture ◽  
Co2 Gas

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

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1710 ◽  
Author(s):  
Houssem Eddine Nechmi ◽  
Mohammed El Amine Slama ◽  
Abderrahmane (Manu) Haddad ◽  
Gordon Wilson
Keyword(s):  
Electrical Strength ◽  
Gas Mixture ◽  
Nonlinear Behaviour ◽  
Co2 Gas ◽  
Surface Flashover ◽  
Surface Finishes ◽  
Needle Position ◽  
Flashover Voltage ◽  
Solid Insulator ◽  
Solid Dielectrics

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. Flashover measurements were performed on different solid dielectrics (Al2O3_filled epoxy resins, PTFE (Polytetrafluoroethylene) and PE (polyethylene)) for different roughness surface finishes. The effect of fixed conducting needles at various positions on electrical strength is reported. A strong nonlinear behaviour as function of gas pressure was observed for all the studied parameters (gas, needle position, solid insulator, insulator roughness). The non-linear behaviour is attributed to the inception and quenching of glow corona, in the interval between inception and breakdown or flashover voltages. It is found that a 4% concentration of NovecTM 4710 in CO2 has a breakdown/flashover voltage ≈ 1.14 higher than CO2. The glow corona-induced stabilization effect is seen for pressures between 2 and 5 bar abs for all the studied parameters. The peak flashover voltage and its associated pressure of the different insulators are strongly dependent on surface roughness. At 8.8 bar abs, the flashover voltage level obtained with various materials was ordered as follows: PTFE > PE-UHMW > Epoxy > HDPE(High-density polyethylene).

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