含不同粒度铝粉的铝/冰燃料的燃烧特性  

Combustion Characteristics of Aluminum/Ice Fuel with Different Particle Sizes of Aluminum Powder

作　　者：李凡[1] 朱宝忠[1] 堵同宽 李浩[1] 孙运兰[1] 

机构地区：[1]安徽工业大学能源与环境学院,安徽马鞍山243002

出　　处：《过程工程学报》2015年第5期831-836,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:51376007;51206001)

摘　　要：用微米铝粉逐级取代部分纳米铝粉制备铝/冰燃料,采用表面接触法和高速摄影技术研究了不同粒度铝粉改善铝/冰燃料燃烧特性的效果.结果表明,随微米铝粉取代量增加,铝/冰燃料燃烧反应速率和剧烈程度均先提高后降低,微米铝粉取代量为30%(?)时,铝/冰燃料最高升温速率达6062.24℃/s,是纯纳米铝/冰燃料的3.8倍.用微米铝粉取代部分纳米铝粉均不同程度提高铝/冰燃料的燃面传播速率,微米铝粉取代量约为20%(?)时燃烧性能最佳,燃面传播速率较纯纳米铝/冰燃料提高57.8%.在分析实验结果的基础上,建立了铝/冰燃料的燃烧火焰模型.The combustion characteristics of aluminum/ice fuel which was prepared by using micron-aluminum powder gradually replacing part of nano-aluminum powder were studied by surface contact method and high-speed photography technique. The results showed that the combustion reaction rate and violence of the reaction of aluminum/ice fuel first increased and then decreased with increasing of replaced amount of micro-aluminum. When the replaced amount of micron-aluminum powder reached about 30%, the maximum heating rate was up to 6 062.24 ℃/s, being 3.8 times faster than the pure nano-aluminum/ice fuel. The burning surface propagation rate of aluminum/ice fuel was improved to different degrees when the micron-aluminum powder replaced the part of nano-aluminum powder. When the replaced amount of micron-aluminum powder reached approximate 20%, the combustion performance of aluminum/ice fuel was the best. Furthermore, the burning surface propagation rate was increased by 57.8% over that of pure nano-aluminum/ice fuel. On the basis of the above analysis, the combustion flame model of aluminum/ice fuel was established.

关 键 词：铝/冰燃料 纳米铝粉 微米铝粉 燃烧 模型 

分 类 号：TK16[动力工程及工程热物理—热能工程]