用于等离子体辅助燃烧的紧凑型微波重入式腔 applicator。（注：这里“applicator”常见释义为“施加器”“涂抹器”等，结合语境可能是某种专业设备名称，暂保留英文未完全准确翻译出其专业术语）

Compact microwave re-entrant cavity applicator for plasma-assisted combustion.

作者信息

Hemawan Kadek W, Wichman Indrek S, Lee Tonghun, Grotjohn Timothy A, Asmussen Jes

机构信息

Department of Electrical and Computer Engineering, Michigan State University, East Lansing, Michigan 48824, USA.

出版信息

Rev Sci Instrum. 2009 May;80(5):053507. doi: 10.1063/1.3131623.

DOI:10.1063/1.3131623

PMID:19485507

Abstract

The design and experimental operation of a compact microwave/rf applicator is described. This applicator operates at atmospheric pressure and couples electromagnetic energy into a premixed CH(4)/O(2) flame. The addition of only 2-15 W of microwave power to a premixed combustion flame with a flame power of 10-40 W serves to extend the flammability limits for fuel lean conditions, increases the flame length and intensity, and increases the number density and mixture of excited radical species in the flame vicinity. The downstream gas temperature also increases. Optical emission spectroscopy measurements show gas rotational temperatures in the range of 2500-3600 K. At the higher input power of > or = 10 W microplasma discharges can be produced in the high electric field region of the applicator.

摘要

描述了一种紧凑型微波/射频施加器的设计和实验操作。该施加器在大气压下运行，并将电磁能量耦合到预混的CH(4)/O(2)火焰中。向火焰功率为10 - 40 W的预混燃烧火焰中仅添加2 - 15 W的微波功率，有助于扩展贫燃料条件下的可燃极限，增加火焰长度和强度，并增加火焰附近激发自由基物种的数密度和混合度。下游气体温度也会升高。光学发射光谱测量显示气体旋转温度在2500 - 3600 K范围内。在输入功率大于或等于10 W时，可在施加器的高电场区域产生微等离子体放电。