气候变化领域集成服务门户(CCPortal): Ion current and carbon monoxide release from an impinging methane/air coflow flame in an electric field

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DOI	10.1016/j.combustflame.2019.03.022
	Ion current and carbon monoxide release from an impinging methane/air coflow flame in an electric field
	Chien Y.-C.; Escofet-Martin D.; Dunn-Rankin D.
发表日期	2019
ISSN	102180
起始页码	250
结束页码	259
卷号	204
英文摘要	This research examines changes in the ion current and the release of carbon monoxide (CO) from surface-impinging coflow diffusion flames when subjecting those flames to high DC electric fields. Carbon monoxide results from the incomplete oxidation of hydrocarbon fuels and, while CO can be desirable in some syngas processes, it is usually a dangerous emission from forest fires, gas heaters, stoves, or furnaces where the core reaction insufficiently oxidizes the fuel to carbon dioxide and water. Electrical aspects of flames, specifically, the production of chemi-ions in hydrocarbon flames and the convective flows driven by these ions, have been investigated in ranges of application, and this research examines the use of electric fields as one mechanism for governing combustion as flames are partially extinguished when impinging on nearby surfaces. We evaluate the ion current and study the flame behavior at saturation current in response to the impinging plate location. We also measure the changes in CO emission, as correlated with variations in flame structure observed using OH chemiluminescence and OH planar laser induced fluorescence (PLIF), as a function of burner-to-plate distance and electrical potential applied to the flame. Three major saturation current impact regions in plate distance is observed, and it uses chemiluminescence with PLIF to illuminate the relative locations of the peak heat release zone and the extended oxidative zone changing by external electric fields. The results show that CO release correlates strongly with changes in location and extent of high concentration regions of OH in the surface-impinging diffusion flames. The results also show that electric fields affect the CO emission but that the burner-to-plate distance has the dominant influence. The detailed findings indicate that a continuous monitor of ion current from the flame to the impinging surface can be an effective sensing index of flame behavior and CO emission. The Combustion Institute
英文关键词	Carbon monoxide; Chemiluminescence; Electric field; Impinging flames; Ion current; PLIF
scopus关键词	Carbon dioxide; Carbon monoxide; Chemiluminescence; Deforestation; Electric fields; Hydrocarbons; Ions; Location; Plates (structural components); Coflow diffusion flames; Electrical potential; External electric field; High-concentration regions; Impinging flames; Ion currents; Oh planar laser induced fluorescences; PLIF; Combustion; carbon dioxide; carbon monoxide; hydrocarbon; methane; airflow; Article; chemical reaction; chemoluminescence; combustion; comparative study; controlled study; electric field; electric potential; exhaust gas; flame; fluorescence; forest fire; furnace; ion current; oxidation; priority journal
来源期刊	Combustion and Flame
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176413
作者单位	Mechanical and Aerospace Engineering, University of California Irvine, 4200 Engineering gateway, Irvine, CA 92697, United States
推荐引用方式 GB/T 7714	Chien Y.-C.,Escofet-Martin D.,Dunn-Rankin D.. Ion current and carbon monoxide release from an impinging methane/air coflow flame in an electric field[J],2019,204.
APA	Chien Y.-C.,Escofet-Martin D.,&Dunn-Rankin D..(2019).Ion current and carbon monoxide release from an impinging methane/air coflow flame in an electric field.Combustion and Flame,204.
MLA	Chien Y.-C.,et al."Ion current and carbon monoxide release from an impinging methane/air coflow flame in an electric field".Combustion and Flame 204(2019).