摘要
为探索多孔介质内液体燃料燃烧特性,设计并搭建了基于空气雾化型供油方式的多孔介质液体燃烧系统,采用电预热点火方式成功实现了柴油喷雾的长时间自维持稳定燃烧和火焰定位.实验研究了柴油喷雾在球堆积床型多孔介质内燃烧的火焰特性与温度场变化规律,讨论了空气流量、喷油量对温度分布的影响.实验结果表明:电预热系统具有良好的稳定性和可重复性,维持稳定燃烧所需的最低预热温度为719.2℃;在着火阶段和稳定燃烧阶段观察到了不同形态的火焰结构;燃烧器具有良好的温度响应性能;实现空气雾化柴油稳定燃烧的最佳当量比应在0.63~0.84之间.
A porous media liquid combustion system based on air atomization fuel supply mode is developed to explore the combustion characteristics of liquid fuel in porous media.Long-term self-sustaining combustion and flame localization of diesel spray are successfully achieved by electric preheating ignition.The flame characteristics and temperature field of diesel spray combustion in spherical bed porous and medium are experimentally studied,and the effects of air flow and fuel injection on temperature distribution are discussed.The experimental results indicate that the electric preheating system has a good stability and repeatability,and the minimum preheating temperature required to maintain stable combustion is 719.2℃.Different flame forms are observed in the ignition stage and the stable combustion stage.The burner has a good temperature response performance,and the optimum equivalent ratio to achieve stable combustion of air atomized diesel oil should be between 0.63 and 0.84.
作者
刘宏升
梁晓艳
徐奕辰
解茂昭
LIU Hongsheng;LIANG Xiaoyan;XU Yichen;XIE Maozhao(School of Energy and Power,Dalian University of Technology,Dalian 116024,Liaoning,China;Liaoning Academy of Materials,Shenyang 110623,China)
出处
《上海交通大学学报》
北大核心
2025年第5期637-647,共11页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金(51876107)资助项目。
关键词
液体燃料
空气雾化型
多孔介质
稳定燃烧
liquid fuel
air atomization mode
porous media
steady combustion
