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Experimental Study on the Characteristics of Ethanol Evaporation and Its Diffusion Flame Under the Effect of DC Field

机译：直流电场作用下乙醇蒸发及其扩散火焰特性的实验研究

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摘要

Smaller scale and higher energy density power sources have received increasing interest in last few years. A photographic method was adopted to study the characteristics of ethanol evaporation and its diffusion flame under the effect of a DC field in present study. A transparent quartz glass tube with an inner diameter of 1.8 mm and an outer diameter of 3 mm was used as a burner. A laminar diffusion flame was established on top of the vertical burner, and a DC field was imposed on the flame along the jet direction. Test conditions involved fuel mass flow rates of 1.0 to 2.2 ml/h, and electric field voltages of 0 to 10 kV. The extremely small ethanol flow rates were accurately controlled by a syringe pump. The flame shapes and the dynamic ethanol vapor-liquid interface were visually observed using a high speed CCD camera. It was found from the experiments that the extent of ethanol evaporation and the diffusion flame shape both change with the mass flow rates of ethanol. The direction and intensity of the DC field have a great impact on the extent of evaporation, flame structure, and soot emission.
机译：在过去的几年中，更小规模和更高能量密度的电源受到了越来越多的关注。本文采用照相法研究了在直流电场作用下乙醇蒸发及其扩散火焰的特征。内径为1.8mm，外径为3mm的透明石英玻璃管被用作燃烧器。在垂直燃烧器的顶部建立了层状扩散火焰，并沿喷射方向在火焰上施加了直流电场。测试条件包括燃料质量流量为1.0至2.2 ml / h，电场电压为0至10 kV。注射泵可精确控制极小的乙醇流速。使用高速CCD相机目测观察火焰形状和动态乙醇气液界面。从实验中发现，乙醇蒸发的程度和扩散火焰的形状均随乙醇的质量流量而变化。 DC场的方向和强度对蒸发程度，火焰结构和烟尘排放有很大影响。

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  • 来源
    《Heat transfer》 |2010年第2期|77-86|共10页
  • 作者

    Yunhua Gan; Juefei Dong; Zeliang Yang;

  • 作者单位

    School of Electric Power, South China University of Technology, Guangzhou, 510641, P.R. China;

    rnSchool of Electric Power, South China University of Technology, Guangzhou, 510641, P.R. China;

    rnSchool of Electric Power, South China University of Technology, Guangzhou, 510641, P.R. China;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    DC field; ethanol evaporation; diffusion flame; experimental study;

    机译：直流场乙醇蒸发;扩散火焰实验研究;

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