Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace

This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an elec...
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Autor*in:	Juwon Park [verfasserIn] Suhyeon Kim [verfasserIn] Siyeong Yu [verfasserIn] Dae Geun Park [verfasserIn] Dong Hyun Kim [verfasserIn] Jae-Hyuk Choi [verfasserIn] Sung Hwan Yoon [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N greenhouse gases

Übergeordnetes Werk:	In: Energies - MDPI AG, 2008, 17(2023), 1, p 96
Übergeordnetes Werk:	volume:17 ; year:2023 ; number:1, p 96

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/en17010096

Katalog-ID:	DOAJ097802360

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245	1	0	\|a Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace
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520			\|a This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production.
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allfields	10.3390/en17010096 doi (DE-627)DOAJ097802360 (DE-599)DOAJbe2ea58194fd4e368f992d99fbc4c8a1 DE-627 ger DE-627 rakwb eng Juwon Park verfasserin aut Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production. high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases Technology T Suhyeon Kim verfasserin aut Siyeong Yu verfasserin aut Dae Geun Park verfasserin aut Dong Hyun Kim verfasserin aut Jae-Hyuk Choi verfasserin aut Sung Hwan Yoon verfasserin aut In Energies MDPI AG, 2008 17(2023), 1, p 96 (DE-627)572083742 (DE-600)2437446-5 19961073 nnns volume:17 year:2023 number:1, p 96 https://doi.org/10.3390/en17010096 kostenfrei https://doaj.org/article/be2ea58194fd4e368f992d99fbc4c8a1 kostenfrei https://www.mdpi.com/1996-1073/17/1/96 kostenfrei https://doaj.org/toc/1996-1073 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p 96
spelling	10.3390/en17010096 doi (DE-627)DOAJ097802360 (DE-599)DOAJbe2ea58194fd4e368f992d99fbc4c8a1 DE-627 ger DE-627 rakwb eng Juwon Park verfasserin aut Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production. high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases Technology T Suhyeon Kim verfasserin aut Siyeong Yu verfasserin aut Dae Geun Park verfasserin aut Dong Hyun Kim verfasserin aut Jae-Hyuk Choi verfasserin aut Sung Hwan Yoon verfasserin aut In Energies MDPI AG, 2008 17(2023), 1, p 96 (DE-627)572083742 (DE-600)2437446-5 19961073 nnns volume:17 year:2023 number:1, p 96 https://doi.org/10.3390/en17010096 kostenfrei https://doaj.org/article/be2ea58194fd4e368f992d99fbc4c8a1 kostenfrei https://www.mdpi.com/1996-1073/17/1/96 kostenfrei https://doaj.org/toc/1996-1073 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p 96
allfields_unstemmed	10.3390/en17010096 doi (DE-627)DOAJ097802360 (DE-599)DOAJbe2ea58194fd4e368f992d99fbc4c8a1 DE-627 ger DE-627 rakwb eng Juwon Park verfasserin aut Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production. high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases Technology T Suhyeon Kim verfasserin aut Siyeong Yu verfasserin aut Dae Geun Park verfasserin aut Dong Hyun Kim verfasserin aut Jae-Hyuk Choi verfasserin aut Sung Hwan Yoon verfasserin aut In Energies MDPI AG, 2008 17(2023), 1, p 96 (DE-627)572083742 (DE-600)2437446-5 19961073 nnns volume:17 year:2023 number:1, p 96 https://doi.org/10.3390/en17010096 kostenfrei https://doaj.org/article/be2ea58194fd4e368f992d99fbc4c8a1 kostenfrei https://www.mdpi.com/1996-1073/17/1/96 kostenfrei https://doaj.org/toc/1996-1073 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p 96
allfieldsGer	10.3390/en17010096 doi (DE-627)DOAJ097802360 (DE-599)DOAJbe2ea58194fd4e368f992d99fbc4c8a1 DE-627 ger DE-627 rakwb eng Juwon Park verfasserin aut Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production. high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases Technology T Suhyeon Kim verfasserin aut Siyeong Yu verfasserin aut Dae Geun Park verfasserin aut Dong Hyun Kim verfasserin aut Jae-Hyuk Choi verfasserin aut Sung Hwan Yoon verfasserin aut In Energies MDPI AG, 2008 17(2023), 1, p 96 (DE-627)572083742 (DE-600)2437446-5 19961073 nnns volume:17 year:2023 number:1, p 96 https://doi.org/10.3390/en17010096 kostenfrei https://doaj.org/article/be2ea58194fd4e368f992d99fbc4c8a1 kostenfrei https://www.mdpi.com/1996-1073/17/1/96 kostenfrei https://doaj.org/toc/1996-1073 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p 96
allfieldsSound	10.3390/en17010096 doi (DE-627)DOAJ097802360 (DE-599)DOAJbe2ea58194fd4e368f992d99fbc4c8a1 DE-627 ger DE-627 rakwb eng Juwon Park verfasserin aut Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production. high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases Technology T Suhyeon Kim verfasserin aut Siyeong Yu verfasserin aut Dae Geun Park verfasserin aut Dong Hyun Kim verfasserin aut Jae-Hyuk Choi verfasserin aut Sung Hwan Yoon verfasserin aut In Energies MDPI AG, 2008 17(2023), 1, p 96 (DE-627)572083742 (DE-600)2437446-5 19961073 nnns volume:17 year:2023 number:1, p 96 https://doi.org/10.3390/en17010096 kostenfrei https://doaj.org/article/be2ea58194fd4e368f992d99fbc4c8a1 kostenfrei https://www.mdpi.com/1996-1073/17/1/96 kostenfrei https://doaj.org/toc/1996-1073 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p 96
language	English
source	In Energies 17(2023), 1, p 96 volume:17 year:2023 number:1, p 96
sourceStr	In Energies 17(2023), 1, p 96 volume:17 year:2023 number:1, p 96
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases Technology T
isfreeaccess_bool	true
container_title	Energies
authorswithroles_txt_mv	Juwon Park @@aut@@ Suhyeon Kim @@aut@@ Siyeong Yu @@aut@@ Dae Geun Park @@aut@@ Dong Hyun Kim @@aut@@ Jae-Hyuk Choi @@aut@@ Sung Hwan Yoon @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	572083742
id	DOAJ097802360
language_de	englisch
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author	Juwon Park
spellingShingle	Juwon Park misc high-temperature pyrolysis misc electric furnace misc high-temperature reactor misc Kelvin–Helmholtz instability misc N<sub<2</sub<O misc greenhouse gases misc Technology misc T Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace
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topic_title	Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace high-temperature pyrolysis electric furnace high-temperature reactor Kelvin–Helmholtz instability N<sub<2</sub<O greenhouse gases
topic	misc high-temperature pyrolysis misc electric furnace misc high-temperature reactor misc Kelvin–Helmholtz instability misc N<sub<2</sub<O misc greenhouse gases misc Technology misc T
topic_unstemmed	misc high-temperature pyrolysis misc electric furnace misc high-temperature reactor misc Kelvin–Helmholtz instability misc N<sub<2</sub<O misc greenhouse gases misc Technology misc T
topic_browse	misc high-temperature pyrolysis misc electric furnace misc high-temperature reactor misc Kelvin–Helmholtz instability misc N<sub<2</sub<O misc greenhouse gases misc Technology misc T
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title	Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace
ctrlnum	(DE-627)DOAJ097802360 (DE-599)DOAJbe2ea58194fd4e368f992d99fbc4c8a1
title_full	Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace
author_sort	Juwon Park
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author_browse	Juwon Park Suhyeon Kim Siyeong Yu Dae Geun Park Dong Hyun Kim Jae-Hyuk Choi Sung Hwan Yoon
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format_se	Elektronische Aufsätze
author-letter	Juwon Park
doi_str_mv	10.3390/en17010096
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title_sort	impact of k-h instability on no<sub<x</sub< emissions in n<sub<2</sub<o thermal decomposition using premixed ch<sub<4</sub< co-flow flames and electric furnace
title_auth	Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace
abstract	This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production.
abstractGer	This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production.
abstract_unstemmed	This study systematically investigates the formation of NO<sub<x</sub< in the thermal decomposition of N<sub<2</sub<O, focusing on the impact of Kelvin–Helmholtz (K-H) instability in combustion environments. Using premixed CH<sub<4</sub< co-flow flames and an electric furnace as distinct heat sources, we explored NO<sub<x</sub< emission dynamics under varying conditions, including reaction temperature, residence time, and N<sub<2</sub<O dilution rates (<i<X</i<<sub<N2O</sub<). Our findings demonstrate that diluting N<sub<2</sub<O around a premixed flame increases flame length and decreases flame propagation velocity, inducing K-H instability. This instability was quantitatively characterized using Richardson and Strouhal numbers, highlighting N<sub<2</sub<O’s role in augmenting oxygen supply within the flame and significantly altering flame dynamics. The study reveals that higher <i<X</i<<sub<N2O</sub< consistently led to increased NO formation independently of nozzle exit velocity (<i<u</i<<sub<jet</sub<) or co-flow rate, emphasizing the influence of N<sub<2</sub<O concentration on NO production. In scenarios without K-H instability, particularly at lower <i<u</i<<sub<jet</sub<, an exponential rise in NO<sub<2</sub< formation rates was observed, due to the reduced residence time of N<sub<2</sub<O near the flame surface, limiting pyrolysis effectiveness. Conversely, at higher <i<u</i<<sub<jet</sub< where K-H instability occurs, the formation rate of NO<sub<2</sub< drastically decreased. This suggests that K-H instability is crucial in optimizing N<sub<2</sub<O decomposition for minimal NO<sub<x</sub< production.
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title_short	Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace
url	https://doi.org/10.3390/en17010096 https://doaj.org/article/be2ea58194fd4e368f992d99fbc4c8a1 https://www.mdpi.com/1996-1073/17/1/96 https://doaj.org/toc/1996-1073
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Impact of K-H Instability on NO<sub<x</sub< Emissions in N<sub<2</sub<O Thermal Decomposition Using Premixed CH<sub<4</sub< Co-Flow Flames and Electric Furnace

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