Preliminary Investigation of Using DBD Plasma for Application in Micro Combustors

Tan, Nurfarah Diana Mohd Ridzuan; Munir, Fudhail Abdul; Tahir, Musthafah Mohd; Saputro, Herman; Mikami, Masato

doi:10.37934/arfmts.82.1.105112

Cited by 9 publications

(3 citation statements)

References 21 publications

(26 reference statements)

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“…The pH has a significant effect on the nature of the energy levels and, consequently, on the nature of electrical transitions in CQDs [117]. Besides, the PL intensity of CQDs produced from green tea decreased as the pH of the solution increased from 4.0 to 10.0 [118,119]. These studies indicated that the different PL intensities of the CQDs at different pH values might be related to the surface chemistry of the CQDs.…”

Section: Phmentioning

confidence: 86%

Hydrothermal Synthesis of Carbon Quantum Dots: An Updated Review

Nazibudin

Zainuddin²,

Abdullah³

2023

ARFMTS

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Carbon Quantum Dots (CQDs) have exceptionally solid and tuneable fluorescence properties which empower their application in vast fields. The hydrothermal approach is regarded as direct and efficient, through polymerization and carbonization reactions, and has been widely applied to prepare various materials due to the high reactivity of the reactants, easy control of the solution, little harm to the environment and low energy consumption under hydrothermal condition. The attracting feature of this route is that neither any strong acid nor post-synthetic surface passivation is necessary. As of now, a lot of important progress in the hydrothermal synthesis of carbon quantum dots such as materials use as precursors and influence of hydrothermal synthesis parameters. Hydrothermal synthesis is one of the most commonly used methods for preparation of nanomaterials. It is basically a solution reaction-based approach. In this review, the main focus is to review the hydrothermal route for carbon quantum dots using different source of materials and their fundamental characterizations, followed by the influence of hydrothermal synthesis conditions to carbon quantum dots.

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Section: Phmentioning

confidence: 86%

Hydrothermal Synthesis of Carbon Quantum Dots: An Updated Review

Nazibudin

Zainuddin²,

Abdullah³

2023

ARFMTS

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“…Hydrogen is considered by many researchers as the fuel of the future as it does not emit carbon to the atmosphere during combustion. Other common renewable fuels suffer from combustion stability issues [24] and high emissions especially in reciprocating engines where combustion residence time is very limited [25]. However, hydrogen is considered an ideal fuel for such engines as it does not emit pollutants such as CO, while NOx emission can be eliminated by removing nitrogen sources [26].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production Enhancement and Tar Reduction using New Three-Layer Annular Downdraft Air-Steam Biomass Gasifier

Khan¹,

Al-attab²

2023

ARFMTS

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This study presents experimental analysis of biomass air-steam gasification for the enhancement of H2 production in producer gas (PG). Wood pellets which are widely available in Malaysia are used in this investigation. A pilot scale downdraft gasifier based on new three-layers annular reactor design was implemented to produce hydrogen enriched PG. The reactor is initially heated using hot flue gas from LPG combustion which is switched to PG when the reactor reaches stable operation. The effect of steam to biomass (S/B) ratio from 1.1 to 1.5 on PG quality in terms of gas composition, HHV and tar contamination is studied. Maximum H2 production of 27.7% was achieved at optimum air flow rate of 75 LPM and S/B ratio of 1.2. At the optimum air flow rate, HHV and tar contamination in PG where in the range of 5.06 - 6.08 MJ/Nm3 and 187 - 30mg/m3, respectively.

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“…Experimentally, the dielectric-barrier-discharge (DBD) plasma actuator's capability for air flow-based controlling in micro combustors with haze generator was evaluated. Continuously generated plasma has a maximal temperature of 90 C and has a minimal effect on the characteristics of the flow, according to the results [34]. Using CFD modelling, neon-oxygen was investigated for the stabilization of hydrogen ignition under standard ambient ingestion conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation and Comparison Between Internal and External Liquid Biofuel Pre-Evaporation in Micro Gas Turbine Chamber

Mohammed R. Abdulwahab,

Khaled Ali Al-attab Al-attab,

Mohamad Yusof Idroas

2023

CFDL

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Due to the current global crises related to fossil fuels (prices up and sources shortage) and in order to diminish the remnants and the negative effects of harmful gas emission (CO and NOx), the fielded researchers and academics try to find alternative source of fossil fuel. Bio fuels consider one of promised source of clean energy. Palm vegetable oil widely separated in Malaysia which considered one of dominant production of this oil globally. Atomization and evaporation radically represent a challenge when using liquid fuel especially fuels with high viscosity and density which is not easy to atomize and evaporate without pre-heating or blende it. A numerical investigation has been proposed to do comparison between two different external evaporative chamber and internal evaporation without using conventional liquid fuel evaporation methods. Findings revealed that both configurations have a good performance in term of emission concentrations and turbine inlet temperature (TIT) which was about 899 C with chamber using internal recycle tube evaporation with CO emission about 183 ppm with outer pre-evaporation chamber. Chamber with internal evaporation was chosen due to technical and fabrication reasons. Besides that, a six different inlet and exhaust ducting ports tested with the chosen chamber with internal recycle tube evaporation chamber, all configurations revealed a non-symmetrical flame flow near chamber exhaust which is not desirable as it will cause turbine unstable operation. The configuration with square duct exhaust was suitable with stable and symmetric flame flow field and slight small CO emission about 312 ppm.

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Preliminary Investigation of Using DBD Plasma for Application in Micro Combustors

Cited by 9 publications

References 21 publications

Hydrothermal Synthesis of Carbon Quantum Dots: An Updated Review

Hydrothermal Synthesis of Carbon Quantum Dots: An Updated Review

Hydrogen Production Enhancement and Tar Reduction using New Three-Layer Annular Downdraft Air-Steam Biomass Gasifier

Numerical Investigation and Comparison Between Internal and External Liquid Biofuel Pre-Evaporation in Micro Gas Turbine Chamber

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