Expansion/micro-explosion of ethanol-biodiesel droplet doped with microparticles in oxygenated hot co-flow

Qiu, Zhicong; Tian, Junjian; Liu, Yu; Sun, Hao; Ni, Zhanshi; Lin, Qizhao; He, Liqun

doi:10.1016/j.applthermaleng.2022.119345

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…1.60 and 1.57 mm, which were almost identical to observe the difference in combustion behaviors. 73,74 At 0 ms, the electric heater reached its experimental position. The combustion process of the BNPs-containing nanofluid consists of ignition, mixed combustion and microexplosion, steady flame (mass burning), and termination.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Designing Novel Dual-Silane-Capped Boron Nanoparticles for Jet Fuels Targeting Simultaneous Enhancement in Combustion and Dispersion Stability

Jekal,

Otgonbayar,

Chu

et al. 2024

Energy Fuels

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Dual-silane-capped boron nanoparticles (DS-BNPs) with enhanced dispersion stability in jet fuels were synthesized for the first time. To this end, a complete dual-silane capping process was implemented via continuous stirring under standard reference conditions. The ratio of dual-silane was adjusted to optimize the experimental procedure for successfully capping the BNPs. The same amount of silane could completely cap the surfaces of the BNPs. The morphological and chemical changes, thermal properties, and comprehensive behavior of the BNPs after single-and dual-silane capping were investigated by using analytical methods. The analysis results indicated the successful dual-silane capping of the BNPs owing to the oxide layer and its hydroxyl group, which enabled the organic groups of silane to replace the hydroxyl groups of the BNPs, resulting in successful surface modification by the condensation reaction. The DS-BNPs showed excellent dispersion stability in jet fuels for 50 days without sedimentation and the shortest combustion time (1300 ms) with the highest calorific value of 10,734 kcal kg −1 . Surface modification successfully achieved optimal dispersion stability and increased the energy content of the nanofluid fuel. This study highlights the significant benefits of DS-BNPs as promising materials for nanofluid fuels to improve the performance of jet fuels.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Designing Novel Dual-Silane-Capped Boron Nanoparticles for Jet Fuels Targeting Simultaneous Enhancement in Combustion and Dispersion Stability

Jekal,

Otgonbayar,

Chu

et al. 2024

Energy Fuels

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“…Cui et al 26 found that P ex of methane monotonically reduced from 0.76 to 0.53 MPa with an increase in temperature from 123 to 273 K and that the initial temperature had no impact on the maximum value of d p /d t . In the study of the mechanism of inflammable fuels under various temperatures and pressures, researchers have found that the reaction rate changes when the temperature rises, which affects the mass properties of the molecules 27–30 . And pressure causes a change in the rate of reaction by changing the mean free energy and collision frequency of the molecules 31–33 …”

Section: Introductionmentioning

confidence: 99%

“…In the study of the mechanism of inflammable fuels under various temperatures and pressures, researchers have found that the reaction rate changes when the temperature rises, which affects the mass properties of the molecules. [27][28][29][30] And pressure causes a change in the rate of reaction by changing the mean free energy and collision frequency of the molecules. [31][32][33] In summary, the data on ethanol explosion parameters at various initial conditions were gathered in the aforementioned tests, and analysis of the mechanism was carried out using thermal explosion theory.…”

Section: Introductionmentioning

confidence: 99%

Study of ethanol vapor explosion and prediction based on chemical kinetics under high temperature and pressure

Qi,

Ding,

Pan

et al. 2023

Process Safety Progress

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The study of the explosion parameters of ethanol–air mixture at high pressure and temperature is essential for the safe production of ethanol. However, the explosion characteristics of ethanol vapor at various pressures and temperatures are limited. The mechanism at the flammability limits of ethanol has not been clarified, and the corresponding prediction model is also lacking. In this study, chemical kinetics and machine learning are used to study the mechanism of ethanol explosion and build predictive models, respectively. Our findings show that an increase in the initial pressure has a more pronounced influence on the explosion pressure (Pex) and pressure rise rate (dp/dt) than an increase of temperature. The variation trend of the upper flammability limit (UFL) of ethanol is related to the different effects of temperature and pressure on OH radicals. H + O2<>OH + O and HO2 + CH3<>OH + CH3O had the greatest effect on the generation of OH radicals. The quantitative relationship between the H, O, and OH radicals and UFL was constructed by machine learning, providing a new research perspective for the prediction of the UFL of an inflammable fuel under different pressures and temperatures. The results of the study will provide theoretical and practical guidance for the prevention and control of explosions in the ethanol production process.

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Study on the effect of duct length and hydrogen on explosion characteristics of LPG/H2 blended clean fuel

Zhao,

Liang,

Zhong

et al. 2024

Fuel

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Expansion/micro-explosion of ethanol-biodiesel droplet doped with microparticles in oxygenated hot co-flow

Cited by 5 publications

References 51 publications

Designing Novel Dual-Silane-Capped Boron Nanoparticles for Jet Fuels Targeting Simultaneous Enhancement in Combustion and Dispersion Stability

Designing Novel Dual-Silane-Capped Boron Nanoparticles for Jet Fuels Targeting Simultaneous Enhancement in Combustion and Dispersion Stability

Study of ethanol vapor explosion and prediction based on chemical kinetics under high temperature and pressure

Study on the effect of duct length and hydrogen on explosion characteristics of LPG/H2 blended clean fuel

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