High Temperature Properties of CO2 Gas Mixture with O2 and HFO-1234yf Decompositions: Predominant Molecular Products and Critical Electric Field Strength at 300-3000 K
カテゴリ: 論文誌(論文単位)グループ名: 【B】電力・エネルギー部門発行日: 2021/11/01タイトル(英語): High Temperature Properties of CO2 Gas Mixture with O2 and HFO-1234yf Decompositions: Predominant Molecular Products and Critical Electric Field Strength at 300-3000 K著者名: Yasunobu Yokomizu (Department of Electrical Engineering, Nagoya University), Naoto Kodama (Department of Electrical Engineering, Nagoya University), Takehiro Sugita (Department of Electrical Engineering, Nagoya University), Tatsuya Ishii (Department of El著者名(英語): Yasunobu Yokomizu (Department of Electrical Engineering, Nagoya University), Naoto Kodama (Department of Electrical Engineering, Nagoya University), Takehiro Sugita (Department of Electrical Engineering, Nagoya University), Tatsuya Ishii (Department of Elキーワード: substitute for SF6，CO2，HFO-1234yf，molecular product，dielectric breakdown property要約(英語): The gases used in high voltage electric power equipment are required to withstand against an externally applied electric field strength. It is therefore essential to find out the electrical insulation strength of the gas. However the high temperature gas formed after the current zero through the arc extinction process in a circuit breaker shows different insulation strengths from that at room temperature, because the high temperature gas consists of various molecular products different from the original gas at room temperature. The CF3CFCH2 (called as HFO-1234yf) at room temperature is known to have a remarkable electrical insulation property similar to SF6. After describing the products generated in CO2 gas mixture with O2 and HFO-1234yf decompositions at temperatures below 3000K, this paper mentions dielectric breakdown properties of the mixtures in view of the molar fractions of the molecular products. Discussions are furthermore made to compare dielectric breakdown properties of CO2 gas and CO2/O2 gas mixture at high temperatures.本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.141 No.11 （2021） 特集：開閉保護技術本誌掲載ページ: 700-711 p原稿種別: 論文／英語電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/141/11/141_700/_article/-char/ja/
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