商用轻柴油和煤油燃料紊流预蒸发预混火焰的燃烧特性

IF 1.5 Q3 ENGINEERING, CHEMICAL
M. Shehata, M. Elkotb, H. Salem
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引用次数: 7

摘要

实验研究了不同工况下燃料类型、燃料混合物、当量比、雷诺数、进口混合气温度、穿孔板孔径等对湍流预蒸发预混空气火焰燃烧过程的影响。在不同工况下沿火焰轴测量CO2、CO、H2、N2、C3H8、C2H6、C2H4、火焰温度和气体流速。采用气相色谱(GC)和CO/CO2红外气体分析仪测量不同的物种。温度测量采用热电偶技术。采用皮托管技术测量气体流速。煤油百分比对浓度、火焰温度和气体流速的影响不是线性相关的。得到了柴油和煤油-空气火焰的绝热火焰温度与混合气强度、燃料类型和进口混合气温度的关系。当量比对轻柴油-空气火焰燃烧过程的影响大于煤油-空气火焰。在不同工况下,火焰温度随雷诺数的增加而升高。雷诺数对燃烧过程的影响,轻柴油火焰大于煤油火焰,富油火焰大于贫油火焰。本文的工作有助于精益预蒸发预混燃气轮机燃烧室的设计和开发。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Combustion Characteristics for Turbulent Prevaporized Premixed Flame Using Commercial Light Diesel and Kerosene Fuels
Experimental study has been carried out for investigating fuel type, fuel blends, equivalence ratio, Reynolds number, inlet mixture temperature, and holes diameter of perforated plate affecting combustion process for turbulent prevaporized premixed air flames for different operating conditions. CO2, CO, H2, N2, C3H8, C2H6, C2H4, flame temperature, and gas flow velocity are measured along flame axis for different operating conditions. Gas chromatographic (GC) and CO/CO2 infrared gas analyzer are used for measuring different species. Temperature is measured using thermocouple technique. Gas flow velocity is measured using pitot tube technique. The effect of kerosene percentage on concentration, flame temperature, and gas flow velocity is not linearly dependent. Correlations for adiabatic flame temperature for diesel and kerosene-air flames are obtained as function of mixture strength, fuel type, and inlet mixture temperature. Effect of equivalence ratio on combustion process for light diesel-air flame is greater than for kerosene-air flame. Flame temperature increases with increased Reynolds number for different operating conditions. Effect of Reynolds number on combustion process for light diesel flame is greater than for kerosene flame and also for rich flame is greater than for lean flame. The present work contributes to design and development of lean prevaporized premixed (LPP) gas turbine combustors.
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来源期刊
Journal of Combustion
Journal of Combustion ENGINEERING, CHEMICAL-
CiteScore
2.00
自引率
28.60%
发文量
8
审稿时长
20 weeks
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