Investigation on the Dielectric Properties of CO<sub>2</sub> and CO<sub>2</sub>-Based Gases Based on the Boltzmann Equation Analysis

SUN Hao (孙昊); WU Yi (吴翊); RONG Mingzhe (荣命哲); GUO Anxiang (郭安祥); HAN Guiquan (韩桂全); LU Yanhui (卢彦辉)

doi:10.1088/1009-0630/18/3/01

Plasma Science and Technology > 2016 > 18(3): 217-222. > DOI: 10.1088/1009-0630/18/3/01

SUN Hao (孙昊), WU Yi (吴翊), RONG Mingzhe (荣命哲), GUO Anxiang (郭安祥), HAN Guiquan (韩桂全), LU Yanhui (卢彦辉). Investigation on the Dielectric Properties of CO₂ and CO₂-Based Gases Based on the Boltzmann Equation Analysis[J]. Plasma Science and Technology, 2016, 18(3): 217-222. DOI: 10.1088/1009-0630/18/3/01

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Investigation on the Dielectric Properties of CO₂ and CO₂-Based Gases Based on the Boltzmann Equation Analysis

1State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China 2Electric Power Research Institute of State Grid Shaanxi Electric Power Company, Xi’an 710049, China 3State Grid Pinggao Group Co., Ltd., Pingdingshan 467000, China

Funds: supported in part by the National Key Basic Research Program of China (973 Program) (No. 2015CB251002), the Science and Technology Project Funds of the Grid State Corporation of China (No. SGSNK00KJJS1501564), National Natural Science Foundation of China (Nos. 51221005, 51577145), the Fundamental Research Funds for the Central Universities of China, and the Program for New Century Excellent Talents in University, China

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Received Date: September 07, 2015

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Abstract

Abstract

In this paper, the dielectric properties of CO₂, CO₂/air, CO₂/O₂, CO₂/N₂, CO₂/CF₄, CO₂/CH₄, CO₂/He, CO₂/H₂, CO₂/NH₃ and CO₂/CO were investigated based on the Boltzmann equation analysis, in which the reduced critical electric field strength (E/N)cr of the gases was derived from the calculated electron energy distribution function (EEDF) by solv¬ing the Boltzmann transport equation. In this work, it should be noted that the fundamental data were carefully selected by the published experimental results and calculations to ensure the validity of the calculation. The results indicate that if He, H₂,N₂ and CH₄, in which there are high ionization coefficients or a lack of attachment reactions, are added into CO₂, the dielectric properties will decrease. On the other hand, air, O₂, NH3 and CF₄ (ranked in terms of (E/N)cr value in increasing order) have the potential to improve the dielectric property of CO₂ at room temperature.

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