Burning velocity of methane-hydrogen mixtures at elevated pressures and temperatures

Troshin, K. Ya.; Борисов, А. А.; Rakhmetov, A. N.; Arutyunov, V. S.; Политенкова, Г. Г.

doi:10.1134/s1990793113050102

Cited by 20 publications

(9 citation statements)

References 6 publications

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“…The results obtained with our atmospheric pressure apparatus at 298 K are in good agreement with previously published data, particularly for lean mixtures . Several studies concerning measurements of laminar flame velocities of methane have also been performed at atmospheric pressure and elevated temperature (for example, refs , , ). Our measurements are in good agreement with literature data, particularly with those of Hermanns et al obtained using the same method but also with those of Gu et al obtained using a constant volume bomb.…”

Section: Resultssupporting

confidence: 90%

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Measurements of Laminar Burning Velocities above Atmospheric Pressure Using the Heat Flux Method—Application to the Case of n-Pentane

et al. 2015

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A new adiabatic burner allowing the measurement of burning velocities at high pressure with the heat flux method has been developed. Experimental measurements of laminar burning velocities of methane and n-pentane were performed for pressures up to 6 atm at 298 K and at atmospheric pressure for temperatures from 298 to 398 K. Equivalence ratios varied from 0.6 to 1.9. The results for methane flames are in good agreement with the only results of literature obtained above atmospheric pressure using the heat flux method; those for n-pentane are to our knowledge the first application of this method to a flame of a liquid fuel above atmospheric pressure. Based on these measurements, empirical correlations of the variation of the measured laminar flame velocities with pressure and temperature have been proposed for methane and n-pentane. In the case of methane, these correlations lead to a satisfactory prediction of literature measurements made using constant volume bombs.

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Section: Resultssupporting

confidence: 90%

“…Many studies (e.g., refs , , − ) present measurements of laminar flame velocities of methane at 298 K above atmospheric pressures. Figure shows that our measurements at 1.5, 2, and 3 atm are in very good agreement with those of Goswami et al obtained using the same heat flux method.…”

Section: Resultsmentioning

confidence: 99%

Measurements of Laminar Burning Velocities above Atmospheric Pressure Using the Heat Flux Method—Application to the Case of n-Pentane

et al. 2015

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“…Whatever the equivalence ratio, methane has the lowest burning rate, while ethane has the fastest in lean conditions, and oxygenates in rich conditions. Recently, data have been proposed for methane and light alkanes at pressure up to 10 bars and temperatures up to 573K [16][17][18]. Ethanol has been studied up to 5 bar at 373K [19], while the burning velocities of DME were measured at 298K and up to 10 bar by Qin and Yu [20].…”

Section: Introductionmentioning

confidence: 99%

Combustion and Oxidation Kinetics of Alternative Gas Turbines Fuels

Glaude

Sirjean

Fournet

et al. 2014

Volume 3A: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration

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Heavy duty gas turbines are very flexible combustion tools that accommodate a wide variety of gaseous and liquid fuels ranging from natural gas to heavy oils, including syngas, LPG, petrochemical streams (propene, butane…), hydrogen-rich refinery by-products; naphtha; ethanol, biodiesel, aromatic gasoline and gasoil, etc. The contemporaneous quest for an increasing panel of primary energies leads manufacturers and operators to explore an ever larger segment of unconventional power generation fuels. In this moving context, there is a need to fully characterize the combustion features of these novel fuels in the specific pressure, temperature and equivalence ratio conditions of gas turbine combustors using e.g. methane as reference molecule and to cover the safety aspects of their utilization. A numerical investigation of the combustion of a representative cluster of alternative fuels has been performed in the gas phase, namely two natural gas fuels of different compositions, including some ethane, a process gas with a high content of butene, oxygenated compounds including methanol, ethanol, and DME (dimethyl ether). Sub-mechanisms have specifically been developed to include the reactions of C4 species. Major combustion parameters, such as auto-ignition temperature (AIT), ignition delay times (AID), laminar burning velocities of premixed flames, adiabatic flame temperatures, and CO and NOx emissions have then been investigated. Finally, the data have been compared with those calculated for methane flames. These simulations show that the behaviors of alternative fuels markedly differ from that of conventional ones. Especially, DME and the process gases appear to be highly reactive with significant impacts on the auto-ignition temperature and flame speed data, which justifies burner design studies within premixed combustion schemes and proper safety considerations. The behaviors of alcohols (especially methanol) display some commonalities with those of conventional fuels. In contrast, DME and process gas fuels develop substantially different flame temperature and NOx generation rates than methane. Resorting to lean premix conditions is likely to achieve lower NOx emission performances. This review of gas turbine fuels shows for instance that the use of methanol as a gas turbine fuel is possible with very limited combustor modifications.

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“…(c) Ignition delay: The ignition delay can affect the recording time and make a source of error [81,82].…”

Section: Uncertainty Sources For Spherical Flame Methodsmentioning

confidence: 99%

Experimental error assessment of laminar flame speed measurements for digital chemical kinetics databases

Walter

Wang

Kanz

et al. 2020

Fuel

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This paper focuses on the uncertainty sources in experimental techniques applied for laminar flame speed measurements. The work was motivated due to the necessity to develop flexible standard sets of the key experimental parameters and descriptors to be included in the machine-readable files of digitalized data repositories such as ReSpeTh, PriMe, CloudFlame, etc. Besides identifying and making the data findable through the associated parameterized descriptions, available information should be interoperable with numerical codes evaluating uncertainty of experimental data. These uncertainty boundaries are very important for interpreters of the data and for development of statistical methods applied for the kinetic model optimization. On this way, four most common used techniques -Heat Flux Method (HFM), Bunsen Flame Method (BFM), Spherical Flame Method (SFM) and CounterFlow Method (CFM) were analyzed. The possible sources of experimental uncertainties have been investigated using data published by different research groups. Respective principles and structures of the experimental uncertainty sources for each studied method have been described.The uncertainty sources, their parameters and descriptors have been classified and systematically summarized in a universal data set to be used in the XML files of digitalized data repositories.

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Burning velocity of methane-hydrogen mixtures at elevated pressures and temperatures

Cited by 20 publications

References 6 publications

Measurements of Laminar Burning Velocities above Atmospheric Pressure Using the Heat Flux Method—Application to the Case of n-Pentane

Measurements of Laminar Burning Velocities above Atmospheric Pressure Using the Heat Flux Method—Application to the Case of n-Pentane

Combustion and Oxidation Kinetics of Alternative Gas Turbines Fuels

Experimental error assessment of laminar flame speed measurements for digital chemical kinetics databases

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