Effluent nozzles in reverse-vortex-stabilized microwave CO2 plasmas for improved energy efficiency

IF 7.2 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of CO2 Utilization Pub Date : 2024-10-01 DOI:10.1016/j.jcou.2024.102952

C.F.A.M. van Deursen , H.M.S. van Poyer , W.A. Bongers , F.J.J. Peeters , F.M.A. Smits , M.C.M. van de Sanden

引用次数: 0

Abstract

Energy efficiency and conversion in a reverse-vortex microwave CO₂ plasma are enhanced by optimizing the thermal trajectories using a converging diverging nozzle in subsonic flows. The nozzle mixes cold, unconverted gas at the edge of the flow with hot, active gas in the middle of the flow. Temperature measurements are taken of the quartz tube as well as just above the nozzle inlet and directly after the nozzle and presented to elucidate differences in performance. Measurements show significant improvements in conversion and energy efficiency, especially at pressures close to atmospheric pressure (500 – 900 mbar). In addition an improvement in plasma stability when adding a converging diverging nozzle. Thermal measurements also point towards a shift in energy loss mechanisms when changing flow configurations.

查看原文本刊更多论文

反向涡流稳定微波二氧化碳等离子体中的出流喷嘴，提高能源效率

通过在亚音速流动中使用会聚发散喷嘴优化热轨迹，提高了反向涡流微波二氧化碳等离子体的能量效率和转换率。喷嘴将气流边缘未转化的冷气体与气流中间活跃的热气体混合在一起。对石英管、喷嘴入口正上方和喷嘴正后方进行温度测量，以阐明性能差异。测量结果表明，转换和能量效率有了显著提高，尤其是在压力接近大气压（500 - 900 毫巴）时。此外，当增加一个会聚发散喷嘴时，等离子体的稳定性也有所提高。热测量结果还表明，在改变流动配置时，能量损失机制也发生了变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of CO2 Utilization CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

13.90

自引率

10.40%

发文量

406

审稿时长

2.8 months

期刊介绍： The Journal of CO2 Utilization offers a single, multi-disciplinary, scholarly platform for the exchange of novel research in the field of CO2 re-use for scientists and engineers in chemicals, fuels and materials. The emphasis is on the dissemination of leading-edge research from basic science to the development of new processes, technologies and applications. The Journal of CO2 Utilization publishes original peer-reviewed research papers, reviews, and short communications, including experimental and theoretical work, and analytical models and simulations.