Journal ArticleDOI
Combustion instability characteristics of H2/CO/CH4 syngases and synthetic natural gases in a partially-premixed gas turbine combustor: Part I—Frequency and mode analysis
Jaehyun Park,Min Chul Lee +1 more
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TLDR
In this article, the results of combustion instability characteristics of H2/CO/CH4 synthetic gases and synthetic natural gases by testing a scale-downed industrial GE7EA gas turbine that features a partially-premixed swirl-stabilized combustion were presented.About:
This article is published in International Journal of Hydrogen Energy.The article was published on 2016-05-18. It has received 42 citations till now. The article focuses on the topics: Adiabatic flame temperature & Combustion.read more
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Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
TL;DR: In this article, the physics of pulsating combustion supported by a hydrogen burnt flame is investigated by applying numerical simulations, and the authors explore the physics and its impact on the thermodynamic properties of a standing-wave combustor.
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Analysing the performance, fuel cost and emission parameters of the 50 MW simple and recuperative gas turbine cycles using natural gas and hydrogen as fuel
TL;DR: In this article, the power production, thermal and exergy efficiencies were calculated for the simple and recuperative gas turbine cycles at constant power production (50MW) and turbine outlet temperature (450°C).
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Thermoacoustic Instability Considerations for High Hydrogen Combustion in Lean Premixed Gas Turbine Combustors: A Review
TL;DR: A review of the effects of burning hydrogen on combustion dynamics with focus on swirl-stabilised lean-premixed combustors is provided in this paper. But, it is not shown that hydrogen can have either a stabilising or destabilising impact on the dynamic state of a combustor through its influence particularly on flame structure and flame position.
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Lean methane flame stability in a premixed generic swirl burner: Isothermal flow and atmospheric combustion characterization
TL;DR: In this paper, a new swirl burner operated with fully premixed methane (CH4) and air at thermal power of 55 kW, atmospheric combustor inlet pressure, and ambient (∼290 K) combustor temperature was characterized in a new burnout operated in a lean premixed mode.
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The impact of reactants composition and temperature on the flow structure in a wake stabilized laminar lean premixed CH4/H2/air flames; mechanism and scaling
TL;DR: In this article, the role of reactants composition and temperature in defining the steady flow structure in bluff body stabilized premixed flames was investigated, and it was found that in the wake region the flame is highly stretched and its location and interaction with the flow is governed by the reactants combustion characteristics under high strain.
References
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Laminar flame speeds of H2/CO mixtures : Effect of CO2 dilution, preheat temperature, and pressure
TL;DR: In this paper, two measurement approaches were employed: one using flame area images of a conical Bunsen flame and the other based on velocity profile measurements in a one-dimensional stagnation flame.
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A Mechanism of Combustion Instability in Lean Premixed Gas Turbine Combustors
TL;DR: In this paper, the authors investigated the mechanisms responsible for combustion instabilities and found that combustors operating in a lean, premixed (LP) mode of combustion are highly sensitive to variations in the equivalence ratio (O) of the mixture that enters the combustor.
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Fuel Flexibility Influences on Premixed Combustor Blowout, Flashback, Autoignition, and Stability
TL;DR: In this article, the impact of fuel composition on the operability of lean premixed gas turbine combustors is discussed, and the underlying processes that must be considered when evaluating how a given combustor's operability will be affected as fuel composition is varied.
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Experimental study on the laminar flame speed of hydrogen/carbon monoxide/air mixtures
TL;DR: In this paper, the laminar flame speed of hydrogen/carbon monoxide fuel mixtures is measured over a large range of fuel compositions (0-100% volume fraction for hydrogen in the mixture) by using a Bunsen burner.