Thermodynamic and Transport Properties of Ar Thermal Plasmas with Polymer Ablated Vapors and Influence of Their Inclusions on Plasma Temperature
Thermodynamic and Transport Properties of Ar Thermal Plasmas with Polymer Ablated Vapors and Influence of Their Inclusions on Plasma Temperature
复制标题
聚合物烧蚀蒸气的Ar热等离子体的热力学和输运特性及其夹杂物对等离子体温度的影响
DOI：
10.1299/jsmeb.48.417
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Okabe
中科院分区：
文献类型：
--
作者：
Yasunori Tanaka;Toru Numada;S. Kaneko;S. Okabe
在假设热平衡条件下，计算了大气压下聚合物烧蚀蒸气的 Ar 热等离子体在高达 30000K 的温度范围内的热力学和输运特性。 POM（聚甲醛）、PE（聚乙烯）、PMMA（聚甲基丙烯酸甲酯）等聚合物在低压断路器或负荷开关中用作绝缘材料和灭弧室壁材料。这些聚合物在断路器的电弧中断过程中被烧蚀到电弧等离子体中。热力学和传输特性对于电弧或热等离子体模拟的预测是必不可少的。采用 Chapman-Enskog 方法的一阶近似来推导传输特性。计算出的热力学和输运特性用于计算Ar感应热等离子体的温度分布，以研究聚合物烧蚀蒸气对热等离子体温度的影响。可以发现，与POM和PE相比，Ar热等离子体中PMMA蒸气的包裹体显着降低了热等离子体温度，这表明PMMA蒸气具有更高的等离子体猝灭效率。
Thermodynamic and transport properties of Ar thermal plasmas with polymer ablated vapors at atmospheric pressure were calculated in temperature range up to 30000K on the assumption of thermal equilibrium condition. The polymers such as POM (polyoxymethylene), PE (polyethylene) and PMMA (polymethlmethacrylate) are being used in low-voltage circuit breakers or load-break switches as an insulation material and a wall material of arc quenching chamber. These polymers are ablated into the arc plasma during the arc interruption processes in the circuit breakers. The thermodynamic and transport properties are indispensable for the prediction of arc or thermal plasma simulation. The first order approximation of Chapman-Enskog method was adopted to derive the transport properties. The calculated thermodynamic and the transport properties were used to compute the temperature distributions of Ar induction thermal plasmas to investigate influence of the polymer ablated vapors on the thermal plasma temperature. It can be found out that PMMA vapor inclusion into Ar thermal plasmas decreases the thermal plasma temperature markedly compared with those of POM and PE, which indicates that the PMMA vapor has a higher plasma-quenching efficiency.