Thermal performance of a micro-combustor for micro-gas turbine system

doi:10.1016/j.enconman.2006.11.022

GIEC OpenIR > 中国科学院广州能源研究所

	Thermal performance of a micro-combustor for micro-gas turbine system
	Cao, H. L.; Xu, J. L.
	2007-05-01
发表期刊	ENERGY CONVERSION AND MANAGEMENT
ISSN	0196-8904
卷号	48 期号:5 页码:1569-1578
通讯作者	xujl@ms.giec.ac.cn
摘要	Premixed combustion of hydrogen gas and air was performed in a stainless steel based micro-annular combustor for a micro-gas turbine system. Micro-scale combustion has proved to be stable in the micro-combustor with a gap of 2 mm. The operating range of the micro-combustor was measured, and the maximum excess air ratio is up to 4.5. The distribution of the outer wall temperature and the temperature of exhaust gas of the micro-conbustor with excess air ratio were obtained, and the wall temperature of the micro-combustor reaches its maximum value at the excess air ratio of 0.9 instead of 1 (stoichiometric ratio). The heat loss of the micro-combustor to the environment was calculated and even exceeds 70% of the total thermal power computed from the consumed hydrogen mass flow rate. Moreover, radiant hunt transfer covers a large fraction of the total heat loss. Measures used to reduce the heat loss were proposed to improve the thermal performance of the micro-combustor. The optimal operating status of the micro-combustor and micro-gas turbine is analyzed and proposed by analyzing the relationship of the temperature of the exhaust gas of the micro-combustor with thermal power and excess air ratio. The investigation of the thermal performance of the micro-combustor is helpful to design an improved microcombustor. (C) 2006 Elsevier Ltd. All rights reserved.
文章类型	Article
其他摘要	Premixed combustion of hydrogen gas and air was performed in a stainless steel based micro-annular combustor for a micro-gas turbine system. Micro-scale combustion has proved to be stable in the micro-combustor with a gap of 2 mm. The operating range of the micro-combustor was measured, and the maximum excess air ratio is up to 4.5. The distribution of the outer wall temperature and the temperature of exhaust gas of the micro-conbustor with excess air ratio were obtained, and the wall temperature of the micro-combustor reaches its maximum value at the excess air ratio of 0.9 instead of 1 (stoichiometric ratio). The heat loss of the micro-combustor to the environment was calculated and even exceeds 70% of the total thermal power computed from the consumed hydrogen mass flow rate. Moreover, radiant hunt transfer covers a large fraction of the total heat loss. Measures used to reduce the heat loss were proposed to improve the thermal performance of the micro-combustor. The optimal operating status of the micro-combustor and micro-gas turbine is analyzed and proposed by analyzing the relationship of the temperature of the exhaust gas of the micro-combustor with thermal power and excess air ratio. The investigation of the thermal performance of the micro-combustor is helpful to design an improved microcombustor.
关键词	Micro-combustion Micro-combustor Thermal Performance Operating Range Heat Loss
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.enconman.2006.11.022
研究领域[WOS]	Thermodynamics ; Energy & Fuels ; Mechanics ; Physics
URL	查看原文
关键词[WOS]	ENGINE
收录类别	SCI
语种	英语
WOS类目	Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear
WOS记录号	WOS:000245957800018
引用统计	被引频次：58[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/3472
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Wushan 510640, Peoples R China 2.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Cao, H. L.,Xu, J. L.. Thermal performance of a micro-combustor for micro-gas turbine system[J]. ENERGY CONVERSION AND MANAGEMENT,2007,48(5):1569-1578.
APA	Cao, H. L.,&Xu, J. L..(2007).Thermal performance of a micro-combustor for micro-gas turbine system.ENERGY CONVERSION AND MANAGEMENT,48(5),1569-1578.
MLA	Cao, H. L.,et al."Thermal performance of a micro-combustor for micro-gas turbine system".ENERGY CONVERSION AND MANAGEMENT 48.5(2007):1569-1578.

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