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	Characteristics of methane combustion in a micro combustor with heat insulation
	Li Junwei ; Zhong Beijing ; Wang Jianhua
	2010-10-12 ; 2010-10-12
关键词	Experimental/ combustion combustion equipment flames heat transfer micromechanical devices/ methane combustion characteristics heat insulation microSwiss-roll combustor methane flow rates combustion products flammability limits heat transfer stoichiometric equivalence ratio fuel-lean limit stable combustion flame temperature/ A8240P Flames, combustion, and explosions A4725Q Convection and heat transfer E2120 Heat and thermodynamic processes (mechanical engineering) E2200 Mechanical components, systems and devices E2160 Micromechanics (mechanical engineering) E2130 Fluid mechanics and aerodynamics (mechanical engineering)
中文摘要	The characteristics of a micro Swiss-roll combustor were studied by burning premixed CH/sub 4//air in the combustor to obtain combustion limits at various methane flow rates and to analyze combustion products. The results show that premixed CH/sub 4//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 CH/sub 4/. 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 CH/sub 4/ is completely oxidized, but if the ER is less than 1, excess CH/sub 4/ is converted to CO and H/sub 2/ which produces less combustion heat; thus, destabilizing the combustion.
语种	中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78977]
专题	清华大学
推荐引用方式 GB/T 7714	Li Junwei,Zhong Beijing,Wang Jianhua. Characteristics of methane combustion in a micro combustor with heat insulation[J],2010, 2010.
APA	Li Junwei,Zhong Beijing,&Wang Jianhua.(2010).Characteristics of methane combustion in a micro combustor with heat insulation..
MLA	Li Junwei,et al."Characteristics of methane combustion in a micro combustor with heat insulation".(2010).

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