Combustion

Lewıs, Bernard; Elbe, Guenther Von.

doi:10.1021/ie50501a013

Cited by 2 publications

(2 citation statements)

References 81 publications

(84 reference statements)

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“…Specifically, the performance in each interval is as follows: the detonation pressure wavefront velocity of lignite has increased by at least 21. 14 It can be inferred that with the addition of coal fuel, there is a gain in the detonation pressure wavefront velocity compared with the detonation of methane/oxygen methanephase fuel, demonstrating the feasibility of coal/methane/ oxygen mix fuel detonation. The phenomenon of the gain in detonation pressure wavefront velocity due to the addition of coal can be explained in conjunction with the classic C-J detonation theory and the energy release process of coal combustion.…”

Section: Influence Of φ Global On Detonationmentioning

confidence: 97%

“…the potential to reduce fuel consumption by 14% under the same exothermic conditions. 6−9 The historical roots of detonation combustion in DC Technology can be traced back to the early 19th century, with significant contributions from esteemed scientists such as Berthelot, 10 Abel, 11 Annamalai, 12 Ragland, 13 Lewis, 14 and Bone. 15 The advancement of aviation and aerospace technology has significantly expanded the study of explosive combustion, as evidenced by the "Buzz-Bomb" from World War II and the valuable pressure-gain device, 16 the rotating detonation engine (RDE).…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Guo,

Ge,

Guo

et al. 2024

ACS Omega

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In order to achieve reliable application of coal in pulse detonation combustion chambers, this study explored the influence mechanism of equivalence ratio and coal type (lignite, anthracite) on the detonation characteristics of coal/methane/ oxygen methane-solid two-phase fuel. A high-energy ignition device was used to ignite the preblast methane fuel, and the hightemperature and high-pressure energy generated directly initiated the detonation of coal/methane/oxygen methane-solid two-phase fuel. The experimental results are as follows: (1) The maximum detonation pressure of coal/methane/air fuel is positively correlated with the initial pressure. With the increase of the φ global , the maximum detonation pressure of the two types of coal gradually increases. To be specific, when the φ global rises from 0.5 to 1.6, the sensitivity of lignite and anthracite to the maximum detonation pressure with respect to the initial pressure increases from 4.56 to 6.11 and 5.48, respectively; (2) In terms of detonation flame and maximum pressure wave velocity, anthracite shows better dynamic performance than lignite. The maximum velocity of detonation flame and pressure wave is achieved when the φ global is 1.4.(3) In terms of detonation thrust performance, as the φ global increases from 0.5 to 1.6, the rate of increase in average thrust of the two types of coal first increases and then decreases. Compared with lignite, anthracite has a wider time domain and higher peak value in the average thrust curve and the generated detonation wave displays a greater impulse. The experimental data and conclusions obtained in this study are of practical significance for realizing the engineering application of pulverized coal detonator power generation.

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Section: Influence Of φ Global On Detonationmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Guo,

Ge,

Guo

et al. 2024

ACS Omega

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CFD-based simulation to reduce greenhouse gas emissions from industrial plants

Sarjito

Elveny

Jalil

et al. 2021

International Journal of Chemical Reactor Engineering

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Greenhouse gas (GHG) pollution is considered one of the challenging concerns in industrial plants, and to emit the appropriate designation in nitrogen oxide reduction, it is required to implement proper numerical simulation procedures. In this study, ANSYS Fluent® software is used as dynamic software to solve heat and mass flow transfer numerically by considering non-structured networks for complex geometries. Dry nitrogen oxide burners have an additional thermocouple to provide an extra fuel pathway to combine with air. Then, standard K-ε is used in the numerical simulations to calculate thermal efficiency in combustion processes for turbulent flow regimes. It can cause the removal of 50% of nitrogen oxide into the atmosphere. Furthermore, by the increase of temperature, nitrogen oxide concentration has been increased in the system. After 1975 K, Fuel has been changed to dry fuel, and therefore nitrogen oxide concentration increased because the steam can provide a relatively non-combustible compound increase than fuel. On the other hand, regarding the water volume increase at inlet steam, nitrogen oxide volume percentage has been decreased dramatically, especially in the first periods of water volume increase. Consequently, when the steam percentage is increased instead of water, nitrogen oxide reduction is increased. Moreover, our simulation results have a proper match with Gibbs energy equilibrium.

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Combustion

Cited by 2 publications

References 81 publications

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

Experimental Study and Application Prospects of Coal Dust/Methane/Oxygen Pulse Detonation Performance: Coal Dust Equivalence Ratio and Types

CFD-based simulation to reduce greenhouse gas emissions from industrial plants

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