Extension of Lean Operation and Extinction Limit of Premixed Flame Applying Non-Thermal Plasma

Gyeong Taek Kim; Dong Min Kim; Hyun Seok You; Chun Sang Yoo; Jeong Park; Suk Ho Chung

doi:10.15231/jksc.2019.24.1.046

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2019 Vol.24, Issue 1 Preview Page Next Page

Research Article

Extension of Lean Operation and Extinction Limit of Premixed Flame Applying Non-Thermal Plasma 저온 플라즈마가 인가된 예혼합화염의 희박 운전 및 소화 한계 확장

30 March 2019. pp. 46-50

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Abstract

The effects of non-thermal plasma (NTP) on lean-premixed swirl-stabilized flames have been experimentally investigated. The plasma is applied to the flames through the dielectric barrier discharge (DBD) technique. The results show that the streamer applied by the non-thermal plasma extend the lean extinction limit by enhancing flame stability. The non-thermal plasma is also able to significantly decrease CO emission while NO_x emission increase slightly due to increased flame temperatures. However, there are an optimal range in equivalence ratio (Φ), i.e. ≤5 ppm for CO emission and ≤15 ppm for NO_x at 0.550≤Φ≤0.575, leading to extension of lean operation limits. These results indicate that applying non-thermal plasma on swirled premixed flames ought to be a useful tool for reduction in CO and NO_x emissions simultaneously by high streamer.

Keywords

Non-thermal plasma

Dielectric barrier discharge

Streamer

Lean extinction limit

CO and NO_x

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 24
No :1
Pages :46-50
Received Date : 2019-01-14
Revised Date : 2019-01-23
Accepted Date : 2019-01-31
DOI :https://doi.org/10.15231/jksc.2019.24.1.046

Journal of The Korean Society Combustion 한국연소학회지 ISSN:1226-0959(Print) 2466-2089(Online)

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