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	甲烷/空气在微型Swiss-roll燃烧器内的燃烧实验
	李军伟 ; 钟北京 ; 王建华 ; LI Junwei ; ZHONG Beijing ; WANG Jianhua
	2010-05-14 ; 2010-05-14
关键词	微小燃烧室 预混燃烧 实验 甲烷 燃烧特性 micro combustor premixed combustion experiment methane combustion characteristics TK403
其他题名	Experimental investigation of methane/air combustion in a micro Swiss-roll combustor
中文摘要	为了解微小Swiss-roll燃烧室的工作特点,用平板Swiss-roll燃烧器进行CH4/空气预混气的燃烧实验,获得了不同甲烷流量时燃烧器的熄火极限,分析了燃烧产物成分。结果表明:该燃烧器能够实现CH4/空气的稳定燃烧,并确保火焰位于燃烧器的中心;当存在回热时,未燃气体被加热,燃烧器的可燃极限范围增大,但上下极限并不对称,富燃极限比较小,而富氧极限比较大,预混气体能够在较大的空气流量下稳定燃烧;燃烧器最高的壁面温度在理论当量比附近,且随着空气流量的增大,火焰温度逐渐下降;空气过量时甲烷可实现较完全燃烧,空气不足时过剩的甲烷转化为H2和CO,减小了燃烧放热量,使燃烧器容易熄火。; The characteristics of a micro Swiss-roll combustor were studied by burning premixed CH4/air in the combustor to obtain combustion limits at various methane flow rates and to analyze combustion products.The results show that premixed CH4/air can stably combust in the combustor with the flame kept in the center of the combustor.Flammability limits are only extended if the heat transfer between the combustion products and the unburned gas exceeds upper and lower unsymmetrical limits of the stoichiometric equivalence ratio(ER) of air to CH4.The large fuel-lean limit sustains stable combustion in the combustor at large air flow rates.The highest wall temperature occurs in the combustor center where the ER is a little larger than 1,with the flame temperature gradually decreasing with increasing air flow rate.If the ER is larger than 1,the CH4 is completely oxidized,but if the ER is less than 1,excess CH4 is converted to CO and H2 which produces less combustion heat;thus,destabilizing the combustion.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/33519]
专题	清华大学
推荐引用方式 GB/T 7714	李军伟,钟北京,王建华,等. 甲烷/空气在微型Swiss-roll燃烧器内的燃烧实验[J],2010, 2010.
APA	李军伟,钟北京,王建华,LI Junwei,ZHONG Beijing,&WANG Jianhua.(2010).甲烷/空气在微型Swiss-roll燃烧器内的燃烧实验..
MLA	李军伟,et al."甲烷/空气在微型Swiss-roll燃烧器内的燃烧实验".(2010).

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