The on-board reforming technique for de-NOx is attracting increasing interest because of the fast start-up and size of the device. However, due to the limited amount of energy available from the battery, a full understanding of the characteristics of the plasma reforming reaction is important to optimise this technology to achieve hydrogen production with minimal power consumption. This paper reports the relative role of the thermal effect of plasma in octane oxidation induced by rotating arc plasma. The thermal effect or gas temperature increased with increased electric power; the conversion of the electric energy to heat was estimated to be higher than 40%. The increased thermal effect was the main consequence of further increasing the plasma power, which controlled the syngas yield and was the main determinant of the energy efficiency of the reaction. In comparison, although the O2/C ratio was the main parameter determining the thermal environment in the reactor, it had only a small influence on the energy efficiency of the reaction. The optimal O2/C ratio for maximum energy efficiency depends on the electric power (e.g. the optimal O2/C was 0.8 at 80 W and 0.5 at 280 W). The results provide guidance for determining the optimal conditions for plasma-driven reforming processes.

中文翻译：

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电弧等离子体在等离子体驱动的辛烷部分氧化中的热效应评价

由于设备的快速启动和尺寸，脱硝的机载重整技术正吸引越来越多的兴趣。然而，由于电池可用的能量有限，充分了解等离子体重整反应的特性对于优化该技术以实现以最低功耗实现制氢非常重要。本文报道了等离子体热效应在旋转电弧等离子体引起的辛烷氧化中的相对作用。热效应或气体温度随着电功率的增加而增加；电能转化为热能的转化率估计高于 40%。增加的热效应是进一步增加等离子体功率的主要结果，其控制合成气产率并且是反应能量效率的主要决定因素。相比之下，虽然 O2/C 比是决定反应器内热环境的主要参数，但它对反应能效的影响很小。最大能效的最佳 O2/C 比取决于电功率（例如，最佳 O2/C 在 80 W 时为 0.8，在 280 W 时为 0.5）。结果为确定等离子体驱动重整过程的最佳条件提供了指导。5 在 280 瓦时）。结果为确定等离子体驱动重整过程的最佳条件提供了指导。5 时为 280 瓦）。结果为确定等离子体驱动重整过程的最佳条件提供了指导。