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Title: Numerical Study of the Effect of Nozzle Configurations on Characteristics of MILD Combustion for Gas Turbine Application
Author: Deng, Xiaowen1; Xiong, Yan2; Yin, Hong1; Gao, Qingshui1
Source: JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
Issued Date: 2016-07-01
Volume: 138, Issue:4
Keyword: mild combustion ; gas turbine ; numerical simulation ; nozzle arrangements
DOI: 10.1115/1.4033141
DOC Type: Article
English Abstract: The MILD (moderate or intense low-oxygen dilution) combustion is characterized by low emission, stable combustion, and low noise for various kinds of fuel. This paper reports a numerical investigation of the effect of different nozzle configurations, such as nozzle number N, reactants jet velocity V, premixed and nonpremixed modes, on the characteristics of MILD combustion applied to one F class gas turbine combustor. An operating point is selected considering the pressure p = 1.63 MPa, heat intensity P-intensity = 20.5MW/m(3) atm, air preheated temperature T-a = 723 K, equivalence ratio phi = 0.625. Methane (CH4) is adopted as the fuel for combustion. Results show that low-temperature zone shrinks while the peak temperature rises as the nozzle number increases. Higher jet velocity will lead to larger recirculation ratio and the reaction time will be prolonged consequently. It is helpful to keep high combustion efficiency but can increase the NO emission obviously. It is also found that N = 12 and V = 110 m/s may be the best combination of configuration and operating point. The premixed combustion mode will achieve more uniform reaction zone, lower peak temperature, and pollutant emissions compared with the nonpremixed mode.
WOS Headings: Science & Technology ; Technology
WOS Subject: Energy & Fuels
WOS Subject Extended: Energy & Fuels
WOS Keyword Plus: TURBULENT JETS ; FLAMELESS ; FURNACE ; BURNER ; AIR ; ENTRAINMENT ; MECHANISM ; REGIME ; FUELS
Indexed Type: SCI ; ISTP
Language: 英语
WOS ID: WOS:000379590000015
Citation statistics:
Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112495
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Guangdong Power Grid Corp, Elect Power Res Inst, Guangzhou 510080, Guangdong, Peoples R China
2.Chinese Acad Sci, Res Ctr Clean Energy & Power, Lianyungang 222069, Jiangsu, Peoples R China
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