A Novel Combustion Platform for Microwave Plasma-Assisted Combustion Studies

Fuh, Che A.

doi:10.1109/tps.2018.2817241

Cited by 8 publications

(2 citation statements)

References 27 publications

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“…e superior performance of the PAC actuator (PACA) is the key of PAC technology, and numerous plasma discharge devices, such as dielectric barrier discharge (DBD) [12][13][14][15], pulsed corona [16], microwave discharges [17], and gliding arc [18], were investigated to improve combustion. Retter et al [19] designed a DBD actuator to enhance a hydrogen diffusion flame and studied the fundamental aspects of DBD plasmas such as the nonthermal self-limiting, and steamer was found with the presence of hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Discharge and Optical Emission Spectrum Characteristics of a Coaxial Dielectric Barrier Discharge Plasma-Assisted Combustion Actuator

Liu

Zhao

2020

Journal of Spectroscopy

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A coaxial dielectric barrier discharge plasma-assisted combustion actuator (DBD-PACA) system was set up to study its discharge and optical emission spectrum (OES) characteristics in space in this paper. Results showed that each discharge cycle can be divided into four stages: a, b, c, and d. Discharge-on only occurred in stages b and d. Comparatively, the discharge intensity was larger in stage d due to the memory effect of excited electrons. Moreover, Lissajous figure and current-voltage methods were utilized to calculate the power of the coaxial DBD-PACA, and both methods produced roughly similar results. The power presented an upward trend with increasing input voltage and airflow rate. In addition, numerous second positive system (SPS) excited nitrogen molecules were detected from the OES signals. The intensity of the spectral lines (297.54 nm, 315.76 nm, 336.96 nm, and 357.56 nm) first increased, then maintained, and then increased rapidly with the increased radius; however, the intensity of the spectral lines (380.34 nm, 405.80 nm, and 434.30 nm) basically remained unchanged, then increased, and finally decreased with the increased radius. The vibrational temperature first decreased quickly and then increased and reached the minimum at r = 18 mm with the increased radius. The vibrational temperatures at all collection points decreased with the increased input voltage. However, within the range of 0–280 L/min, when r was lower than 15 mm, the vibrational temperatures first increased rapidly and then decreased slowly; when r was greater than 15 mm, the vibrational temperatures first increased and then basically remained stable.

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Section: Introductionmentioning

confidence: 99%

Discharge and Optical Emission Spectrum Characteristics of a Coaxial Dielectric Barrier Discharge Plasma-Assisted Combustion Actuator

Liu

Zhao

2020

Journal of Spectroscopy

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“…Over the last few decades, non-thermal atmospheric pressure plasma sources (NTAPPs) have received enormous attention due to their diverse applications in various fields, such as plasma assisted combustion [1][2][3], material processing [4,5], agriculture [6,7], plasma-assisted biomedical applications [8][9][10][11], plasma-assisted nitrogen fixation [12][13][14][15][16], and pollution control [17][18][19]. The key main purpose of plasma in these fields is to generate various types of reactive oxygen species (ROS) like hydroxyl radical (OH), atomic oxygen (O), singlet oxygen ( 1 O 2 ), and hydrogen peroxide (H 2 O 2 ), reactive nitrogen species (RNS) like excited (N +…”

Section: Introductionmentioning

confidence: 99%

Control of hydrogen peroxide production in plasma activated water by utilizing nitrification

Lamichhane¹,

Ghimire²,

Mumtaz³

et al. 2019

J. Phys. D: Appl. Phys.

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In this study, ammonia (NH3) vapor was added to an atmospheric pressure argon plasma jet generated by a sinusoidal power supply (with an applied voltage of 4 kV and frequency of 35 kHz) and it was analyzed by electrical, optical, and chemical probe measurements. A total gas flow rate of 1200 sccm under 2% flow rate of either water or ammonia solution at concentrations up to 0.75% mixed with 98% argon feeding gas. The dissipated power of the plasma jet estimated by voltage-charge plots was found to decrease continuously with increase in ammonia concentrations at a fixed applied voltage. The optical emission spectra inside the quartz tube obtained for the NH3 mixed plasma indicated the presence of nitrogen emission lines which were absent in the water only mixed argon plasma. Colorimetric measurements of hydrogen peroxide (H2O2) and nitrite () in plasma activated water (PAW) were performed at different consumed energy varied by plasma exposure time. The H2O2 concentration decreased to 4 ppm from 14 ppm, while the concentration simultaneously increased to 6 ppm from 1 ppm as the ammonia concentrations increased to 0.75% from 0% throughout 2.07 × 103 joule energy consumption. We also analyzed the corresponding variation of pH values, in absence of ammonia, PAW leads to acidification but addition of small amount of ammonia in plasma is sufficient to make it alkaline. Additionally, we measured the hydroxyl (OH) radical density in gas and liquid phases by utilizing UV absorption spectroscopy and chemical probe method, respectively. OH radical density in both phases also decreased with the increase in the NH3 concentrations. Experimental results obtained from this experiment can be attributed to control H2O2 concentrations in the PAW via plasma-assisted nitrification.

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Research progress of microwave plasma ignition and assisted combustion

ZHANG

ZENG

et al. 2023

Chinese Journal of Aeronautics

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A Novel Combustion Platform for Microwave Plasma-Assisted Combustion Studies

Cited by 8 publications

References 27 publications

Discharge and Optical Emission Spectrum Characteristics of a Coaxial Dielectric Barrier Discharge Plasma-Assisted Combustion Actuator

Discharge and Optical Emission Spectrum Characteristics of a Coaxial Dielectric Barrier Discharge Plasma-Assisted Combustion Actuator

Control of hydrogen peroxide production in plasma activated water by utilizing nitrification

Research progress of microwave plasma ignition and assisted combustion

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