Combustion characteristics of H2/N2 and H2/CO syngas nonpremixed flames

Dinesh, K.K.J. Ranga; Jiang, Xi; Kirkpatrick, M.P.; Malalasekera, Weeratunge

doi:10.1016/j.ijhydene.2012.08.027

Cited by 26 publications

(3 citation statements)

References 35 publications

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“…Hydrogen gas turbines represent a crucial technology for the conversion of hydrogen energy into electricity, aiming to achieve low-or zero-carbon power generation. Leading companies such as Mitsubishi Hitachi Power Systems, General Electric Power, Siemens Energy, and Ansaldo Energia have already developed and manufactured gas turbine units that use hydrogen as their primary fuel source [160]. However, the advancement of hydrogen gas turbine technology encounters various challenges, including issues related to flame stability and NOx emissions.…”

Section: Hydrogen-based Power Generationmentioning

confidence: 99%

Towards a Future Hydrogen Supply Chain: A Review of Technologies and Challenges

Li,

Liu,

Sun

et al. 2024

Sustainability

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The overuse of fossil fuels has caused a serious energy crisis and environmental pollution. Due to these challenges, the search for alternative energy sources that can replace fossil fuels is necessary. Hydrogen is a widely acknowledged future energy carrier because of its nonpolluting properties and high energy density. To realize a hydrogen economy in the future, it is essential to construct a comprehensive hydrogen supply chain that can make hydrogen a key energy carrier. This paper reviews the various technologies involved in the hydrogen supply chain, encompassing hydrogen production, storage, transportation, and utilization technologies. Then, the challenges of constructing a hydrogen supply chain are discussed from techno-economic, social, and policy perspectives, and prospects for the future development of a hydrogen supply chain are presented in light of these challenges.

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Section: Hydrogen-based Power Generationmentioning

confidence: 99%

Towards a Future Hydrogen Supply Chain: A Review of Technologies and Challenges

Li,

Liu,

Sun

et al. 2024

Sustainability

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“…Dinesh et al . simulated turbulent nonpremixed H 2 /N 2 and H 2 /CO syngas flames using 3D large eddy simulations coupled with a laminar flamelet combustion model. Results showed that the maximum flame temperature were during HCO1 combustion including 70% and 30% by volume.…”

Section: Introductionmentioning

confidence: 99%

Modelling of combustion performances and emission characteristics of coal gases in a model gas turbine combustor

İlbaş

Karyeyen

2013

Int. J. Energy Res.

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SUMMARYIn recent years, gas mixtures are being used as alternative fuels in combustors. These gas mixtures are obtained by different methods. For instance, coal gasification and carbonization as coal have the largest reserves among fossil fuels. Gas mixtures obtained via coal gasification and carbonization are called water gas, generator gas, town gas and coke oven gas. These fuels contain various gases. As a result of this, heating values of fuels are also different. Therefore, combustion performances and emission characteristics of these fuels need to be investigated.In this study, combustion performances and emissions including CO, CO2 and NOX of water gas, generator gas, town gases, coke oven gas and methane were numerically investigated in a model gas turbine combustor. The numerical modelling of turbulent nonpremixed diffusion flames has been performed in this combustor. Mathematical models used in this study involved the k–ε model of turbulent flow, the PDF/mixture fraction model of nonpremixed combustion and P‐1 radiation model. A CFD code ANSYS Fluent was used for all numerical investigations. Temperature distributions of axial and radial directions were determined. A NOX post‐processor was used for the prediction of NOX emissions from the gas turbine combustor.Modelling was performed for 60 kW thermal power and different equivalance ratios (i.e. Ф = 0.91, Ф = 0.77 and Ф = 0.67). The studied type 1 model gas turbine combustor was modelled for Ф = 0.91 equivalance ratio. Then, Other equivalance ratios were analysed for type 2 model gas turbine combustor. The effect of dilution air on combustion performances and emission characteristics was also investigated. It is concluded that the coke oven gas, the town gas I, town gas II and the water gas are appropriate for usage as alternative fuel, whereas the generator gas is not suitable for gas turbine combustors. Copyright © 2013 John Wiley & Sons, Ltd.

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“…Balaji et al / Journal of Energy and Environmental Sustainability, 1 (2016)[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] …”

mentioning

confidence: 99%

Numerical Investigation of Swirling Hydrogen Flames: Effect of Swirl and Fuel Jet in Coherent Structures

Balaji¹,

De²,

De³

2016

JEES

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The present work reports on the numerical investigation of turbulent swirling flames using Large Eddy Simulation (LES) methodology in conjunction with presumed shape PDF (Probability Density Function) based combustion models. The LES with dynamic-smagorinsky eddy viscosity model is used to study the different complex unsteady structures involved in the flow field. Sydney swirl burner, which is considered as a reliable benchmark for numerical studies in swirling flames, is chosen as a test case. Two isothermal and three reacting test cases are considered for the present study. In the isothermal calculations, a precession vortex core is accurately captured. The precession vortex core structures, responsible for the instability in hydrogen-methane reacting cases, are analyzed using different visualization techniques. Phase averaging technique is also used to analyze the different repeated coherent structures responsible for the instability in the flow field.

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Combustion characteristics of H2/N2 and H2/CO syngas nonpremixed flames

Cited by 26 publications

References 35 publications

Towards a Future Hydrogen Supply Chain: A Review of Technologies and Challenges

Towards a Future Hydrogen Supply Chain: A Review of Technologies and Challenges

Modelling of combustion performances and emission characteristics of coal gases in a model gas turbine combustor

Numerical Investigation of Swirling Hydrogen Flames: Effect of Swirl and Fuel Jet in Coherent Structures

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