Partially-Premixed Combustion Characteristics and Thermal Performance of Micro Jet Array Burners with Different Nozzle Spacings

doi:10.1007/s11630-021-1511-7

	Partially-Premixed Combustion Characteristics and Thermal Performance of Micro Jet Array Burners with Different Nozzle Spacings
	Yang Haolin 2,4,5; Wu Yong 1,3; Zeng Xiaojun 2,4,5; Wang Xiaohan 2,4,5; Zhao Daiqing 2,4,5
刊名	JOURNAL OF THERMAL SCIENCE
	2021-08-10
页码	13
关键词	micro jet array burner flame interaction methane air flame temperature fluctuation thermal performance
ISSN号	1003-2169
DOI	10.1007/s11630-021-1511-7
通讯作者	Wu Yong(ypwww@126.com) ; Zhao Daiqing(zhaodq@ms.giec.ac.cn)
英文摘要	In order to develop a burner with uniform temperature field, the combustion characteristics and thermal performance of partially premixed methane/air jet flames were experimentally studied by using micro jet array burners. The circular tubes of 1.0-mm inner diameter and 1.5-mm outer diameter were used as nozzles. The effects of nozzle spacing and equivalence ratio on flame phenomenology, temperature distribution and pollutant emissions were respectively investigated by camera photography, thermocouple measurement and sampling analysis. Results show that there are two clean flame patterns: clean merged-flame and clean non-merging flames. The flame patterns depend on the strength of flame interaction, the equivalence ratio of the mixture and the quantity of air entrainment through the gap between nozzles. The burners with small nozzle spacing such as 2 mm and 2.5 mm tend to produce fully merged flame with low equivalence ratio limit and the corresponding temperature fields are very uniform with fluctuations less than 0.3%, but a small increase in equivalence ratio will lead to rapid deterioration of combustion property. The burner with a medium spacing of 3 mm can produce partially merged flame in a wide equivalence ratio range with low emissions, and the temperature fluctuation can be less than 0.5% (<7 K) in the optimal region. The burner with a large spacing of 4 mm will basically form independent array flames with the largest temperature fluctuation over 1%, while it can achieve clean combustion under high equivalence ratio due to large air entrainment. Comprehensive analysis shows that the micro jet array burner with medium nozzle spacing of 3 mm has the best combustion characteristics and thermal performance.
资助项目	National Natural Science Foundation of China[51176193] ; Key R&D Projects of Guangdong Province[2020B1111360004] ; Self-financing Science and Technology Projects in Foshan[2020001004571]
WOS关键词	DIFFUSION FLAMES ; EXTINCTION ; MECHANISM
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000683273800001
资助机构	National Natural Science Foundation of China ; Key R&D Projects of Guangdong Province ; Self-financing Science and Technology Projects in Foshan
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33611]
专题	中国科学院广州能源研究所
通讯作者	Wu Yong; Zhao Daiqing
作者单位	1.Guangdong Inst Special Equipment Inspect & Res, Shunde Branch, Foshan 528300, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Hunan Univ Humanities Sci & Technol, Dept Energy & Mech Engn, Loudi 417000, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 5.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Yang Haolin,Wu Yong,Zeng Xiaojun,et al. Partially-Premixed Combustion Characteristics and Thermal Performance of Micro Jet Array Burners with Different Nozzle Spacings[J]. JOURNAL OF THERMAL SCIENCE,2021:13.
APA	Yang Haolin,Wu Yong,Zeng Xiaojun,Wang Xiaohan,&Zhao Daiqing.(2021).Partially-Premixed Combustion Characteristics and Thermal Performance of Micro Jet Array Burners with Different Nozzle Spacings.JOURNAL OF THERMAL SCIENCE,13.
MLA	Yang Haolin,et al."Partially-Premixed Combustion Characteristics and Thermal Performance of Micro Jet Array Burners with Different Nozzle Spacings".JOURNAL OF THERMAL SCIENCE (2021):13.