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Relevant bibliographies by topics / Flat flame burner

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Academic literature on the topic 'Flat flame burner'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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Journal articles on the topic "Flat flame burner"

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de GOEY, L. P. H., A. van MAAREN, and R. M. QUAX. "Stabilization of Adiabatic Premixed Laminar Flames on a Flat Flame Burner." Combustion Science and Technology 92, no. 1-3 (July 1993): 201–7. http://dx.doi.org/10.1080/00102209308907668.

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Furutani, M., Y. Ohta, and M. Nose. "Nitric Oxide Circumstances in Nitrogen-Oxide Seeded Low-Temperature Powling-Burner Flames." Eurasian Chemico-Technological Journal 3, no. 3 (July 5, 2017): 157. http://dx.doi.org/10.18321/ectj569.

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<p>Flat low-temperature two-stage flames were established on a Powling burner using rich diethyl-ether/ air or n-heptane/air mixtures, and nitrogen monoxide NO was added into the fuel-air mixtures with a concentration of 240 ppm. The temperature development and chemical-species histories, especially of NO, nitrogen dioxide NO<sub>2</sub> and hydrogen cyanide HCN were examined associated with an emission-spectrum measurement from the low-temperature flames. Nitrogen monoxide was consumed in the cool-flame region, where NO was converted to the NO<sub>2</sub>. The NO<sub>2</sub> generated, however, fell suddenly in the cool-flame degenerate region, in which the HCN superseded. In the blue-flame region the NO came out again and developed accompanied with remained HCN in the post blue-flame region. The NO seeding into the mixture intensified the blue-flame luminescence probably due to the cyanide increase.</p>

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Konnov, A. A., R. Riemeijer, V. N. Kornilov, and L. P. H. de Goey. "2D effects in laminar premixed flames stabilized on a flat flame burner." Experimental Thermal and Fluid Science 47 (May 2013): 213–23. http://dx.doi.org/10.1016/j.expthermflusci.2013.02.002.

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ARAKI, Masashi, Kazunari NAKAYA, and Masaaki OKUYAMA. "501 Development of flat flame burner of bean roast." Proceedings of Autumn Conference of Tohoku Branch 2005.41 (2005): 177–78. http://dx.doi.org/10.1299/jsmetohoku.2005.41.177.

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NOSE, Masakazu, Masahiro FURUTANI, and Yasuhiko OHTA. "Emission Spectra and Oxidation Products of Low-Temperature Flames in Flat-Flame Burner." Transactions of the Japan Society of Mechanical Engineers Series B 64, no. 627 (1998): 3867–73. http://dx.doi.org/10.1299/kikaib.64.3867.

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Badiger, Shankar, Vadiraj V. Katti, and Anil R. Tumkur. "Heat Transfer Characteristics of a Coaxial Inverse Diffusion Flame Jet Impingement with an Induced Swirl." International Journal of Heat and Technology 38, no. 4 (December 31, 2020): 887–94. http://dx.doi.org/10.18280/ijht.380415.

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Flame jet has a wide range of applications in the industries and also in domestics field. The efforts have been put to enhance the heat transfer and to reduce the emissions from the premixed and inverse diffusion flame burners. Especially, the IDF burner suffers from lack of proper air and fuel mixing, the swirl generated motion from twisted tape would improve the combustion efficiency. Therefore, an aim of experiment is to study the heat transfer characteristics of an inverse diffusion flame (IDF) jet impinging on a flat surface in a coaxial tube burner with swirl. The twisted tape of 15mm pitch creates the swirl in the flame jet (Corresponding to the twist ratio of 3 and swirl number of 0.52). An effect of swirl at air jet Reynolds number of 1000 to 2500 and surface of the burner-to-impingement plate distance (H/da) varying from 2 to 20 is studied at fixed equivalence ratio (ϕ) of 1.1. An average heat flux and peak heat flux are studied for the region of 0<r/da<3 on an impingement plate. From an investigation, it is found that the swirling in the flame jet enhances the average heat flux by up to 179.2%. The maximum average heat flux is found at the optimal burner-to-target plate distance of 8.

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Pickett, Brent M., Carl Isackson, Rebecca Wunder, Thomas H. Fletcher, Bret W. Butler, and David R. Weise. "Flame interactions and burning characteristics of two live leaf samples." International Journal of Wildland Fire 18, no. 7 (2009): 865. http://dx.doi.org/10.1071/wf08143.

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Combustion experiments were performed over a flat-flame burner that provided the heat source for multiple leaf samples. Interactions of the combustion behavior between two leaf samples were studied. Two leaves were placed in the path of the flat-flame burner, with the top leaf 2.5 cm above the bottom leaf. Local gas and particle temperatures, as well as local oxygen concentrations, were measured along with burning characteristics of both leaves. Results showed that the time to ignition of the upper leaf was not significantly affected by the presence of the lower leaf. The major difference observed was that the time of flame duration of the upper leaf was significantly affected by the presence of the lower leaf. Causes for the prolonged flame were found to be the consumption of oxygen by the burning lower leaf and the obstruction provided by the lower leaf, causing a wake effect, thus altering the combustion behavior of the upper leaf.

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Hossain, M. M., J. Myung, R. Lan, M. Cassidy, I. Burns, S. Tao, and J. T. S. Irvine. "Study on Direct Flame Solid Oxide Fuel Cell Using Flat Burner and Ethylene Flame." ECS Transactions 68, no. 1 (July 17, 2015): 1989–99. http://dx.doi.org/10.1149/06801.1989ecst.

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Hartung, G., J. Hult, and C. F. Kaminski. "A flat flame burner for the calibration of laser thermometry techniques." Measurement Science and Technology 17, no. 9 (August 17, 2006): 2485–93. http://dx.doi.org/10.1088/0957-0233/17/9/016.

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Gregor, Mark Aurel, and Andreas Dreizler. "A quasi-adiabatic laminar flat flame burner for high temperature calibration." Measurement Science and Technology 20, no. 6 (May 1, 2009): 065402. http://dx.doi.org/10.1088/0957-0233/20/6/065402.

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Dissertations / Theses on the topic "Flat flame burner"

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Ozem, Hayley L. M. "Numerical and experimental investigation of isothermal swirling flow in a flat flame burner." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0002/NQ27848.pdf.

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Pickett, Brent M. "Effects of Moisture on Combustion of Live Wildland Forest Fuels." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2533.pdf.

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Shahla, Roya. "Etude expérimentale et modélisation cinétique de l’oxydation de biocarburants : impact sur les émissions de polluants (carbonylés et hydrocarbures aromatiques polycycliques)." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2043.

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Le secteur des transports est soumis à des réglementations sévères visant à limiter les émissions polluantes à l’échappement. Les biocarburants ont reçu une attention particulière en tant que carburant de substitution ou additif aux carburants traditionnels dans l’espoir de remédier aux problèmes de l’épuisement des ressources fossiles et des émissions de certains polluants. Cette thèse a pour objectif principal d’étudier l’impact de l’incorporation des biocarburants oxygénés ou synthétiques aux carburants traditionnels sur les émissions de polluants non réglementés à savoir les composés carbonylés (aldéhydes et cétones) et les hydrocarbures aromatiques polycycliques (HAPs) adsorbés sur la suie. Dans un premier temps, une étude a été menée dans une chambre de combustion interne. Les prélèvements des gaz à l’échappement suivis par les analyses chromatographiques en phase liquide ont permis d’évaluer l’effet de l’additivation du carburant sur les émissions de composés carbonylés. Une deuxième étude a été menée au moyen d’un brûleur à flamme plate permettant de collecter des suies de flammes riches dans des conditions stabilisées. Les mesures effectuées ont permis de déterminer l’effet de l’incorporation des biocarburants oxygénés au carburant sur la production de suie et le contenu d’HAPs adsorbés. Ce travail a été complété par l’étude de la cinétique d’oxydation de trois additifs oxygénés à l’état pur en réacteur auto-agité à pression atmosphérique et dans un large domaine de températures (530-1280 K) et de richesses (0,5-4). Les profils de concentration des réactifs, produits et principaux intermédiaires stables ont été obtenus par spectrométrie infrarouge à transformée de Fourrier (IRTF) et chromatographie en phase gazeuse. Ces résultats ont été ensuite confrontés aux profils d’espèces obtenus par simulation, à l’aide des modèles cinétiques d’oxydation disponibles dans la littérature
The transport sector is subject to strict regulations aiming at limiting pollutants emissions. Biofuels have received particular attention as alternative fuel or additive to traditional fuels for remedying two issues: the depletion of fossil resources and emissions of certain pollutants. In this work we studied the impact of blending conventional fuels with synthetic or oxygenated biofuels on the emissions of non-regulated pollutants, namely carbonyl compounds (aldehydes and ketones) and polycyclic aromatic hydrocarbons (PAHs) adsorbed on soot. Firstly, the carbonyl compounds emissions were studied using an internal combustion engine. The carbonyls were collected at the exhaust of a diesel engine running with biofuel blends and analyzed using high performance liquid chromatography. Secondly, the impact of blending the conventional fuel with oxygenated biofuels on soot formation and adsorbed PAHs were studied using a flat flame burner under well stabilized conditions. This work was completed by the study of the kinetics of oxidation of three oxygenated additives in a jet-stirred reactor at atmospheric pressure, over the temperature range 530-1280 K and for different equivalence ratios (0.5-4). The concentration profiles of reactants, products and main stable intermediates were obtained by probe sampling and gas analyses including Fourier transform infrared spectroscopy (FTIR) and gas phase chromatography. These results were then compared to simulated species concentration profiles obtained using oxidation kinetic models available from the literature

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Book chapters on the topic "Flat flame burner"

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Al-Chawbi, Rifat, Carl Schatz, Loo Yap, and Richard Marshall. "Flat-Flame oxy-Fuel Burner Technology for Glass Melting." In A Collection of Papers Presented at the 55th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 16, Issue 2, 202–15. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470314661.ch25.

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Conference papers on the topic "Flat flame burner"

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Simon, M. A., B. D. Baird, and S. R. Gollahalli. "Characteristics of a Laminar Diffusion Flame in a Cross-Flow of Combustion Products." In ASME 2005 Power Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pwr2005-50030.

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This study was an investigation of the characteristics of a horizontal laminar diffusion flame established from a tubular burner in a buoyant vertical flow vitiated with combustion products created by a flat flame. The effects of varying flat flame equivalence ratio on these characteristics were studied. Applications of this study include exhaust gas recirculation (EGR), staged combustion in furnaces, and afterburners in jet engines. The fuel used for both the horizontal (cross-flow flame) and the flat flame in this study was propane. For a range of flat flame burner equivalence ratio (0.6 to 0.9), measurements of cross-flow flame length, and global emissions of NO were made. The mass flow rate of propane delivered to the cross-flow flame was held constant during these measurements. The flames were photographed with a digital camera. Profiles of combustion species concentrations and temperature were taken at 25% and 50% of the cross-flow flame length for flat flame burner equivalence ratios of 0.6 and 0.8, and for a non-combustion case (air flow only) in the flat flame. It was found that increasing the flat flame burner equivalence ratio caused an increase in the length of the cross-flow flame. The maximum temperature of the cross-flow flame decreased with increasing flat flame burner equivalence ratio. The introduction of the cross-flow flame increased the NO production in a flat flame with an equivalence ratio of 0.6, but did not significantly affect the NO production in a flat flame of an equivalence ratios of 0.7 or 0.8, and reduced it (by as much as 25%) in a flat flame of equivalence ratio of 0.9. This reduction of NO production and flame temperature and increase in flame length with increasing flat flame equivalence ratio was attributed to the reduction of oxygen available to the cross-flow flame. These results were supported with the in-flame combustion species concentration profiles.

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Mohamad, A. A. "Numerical Simulation of Combustion in a Cylindrical Porous Medium." In ASME 2002 Engineering Technology Conference on Energy. ASMEDC, 2002. http://dx.doi.org/10.1115/etce2002/cae-29017.

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Convectional free flame combustion causes the temperature rise in the vicinity of the flame to be very steep, resulting in high temperatures, consequently NOx formation enhances. The fact is that the thermal conductivity of gases are very low, i.e., poor thermal conductors. Combustion in porous media elevates this problem by enhancing heat conduction and thermal radiation from the flame zone, which reduces the flame temperature and NOx formation. Also, heat transfer from the free flame to a load is mainly by convection, while heat transfer is by convection and radiation from combustion zone in porous medium to a load. Moreover, it is easy to stabilize the flame in a porous medium, where the thermophysical properties of the porous medium can engineered for specific application. Most of the work is done on flat type porous burner, where the axial flow of gaseous fuel air mixture forces through a layer of porous medium. In this report a concept of cylindrical porous burner is introduced, where the fuel air mixture is forced to flow radially. Mathematical models and simulation results are introduced for both burners, axial and radial flow burners. Preliminary results of the comparison between the thermal performances between the mentioned burners are discussed. The results revealed that the cylindrical burner has superiority over the convectional flat burner. The cylindrical burner has a wide range stability limits and may produce less NOx than the flat type burners.

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Dirrenberger, P., P. A. Glaude, H. Le Gall, R. Bounaceur, O. Herbinet, F. Battin-Leclerc, and A. A. Konnov. "Laminar Flame Velocity of Components of Natural Gas." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46312.

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Laminar burning velocities are important parameters in many areas of combustion science such as the design of burners or engines and for the prediction of explosions. They play an essential role in the combustion in gas turbines for the optimization of the nozzles and of the combustion chamber. Adiabatic laminar flame velocities are usually investigated in three types of apparatus which are currently available for that type of measurements: constant volume bombs in which the propagation of a flame is initiated by two electrodes and followed by shadowgraphy, counterflow-flame burners with axial velocity profiles determined by Particle Imaging Velocimetry, and flat flame adiabatic burners which consist of a heated burner head mounted on a plenum chamber with the radial temperature distribution measurement made by a series of thermocouples (used in this work). This last method is based on a balance between the heat loss from the flame to the burner required for the flame stabilization and the convective heat flux from the burner surface to the flame front. It was demonstrated that this heat flux method is suitable for the determination of the adiabatic flame temperature and flame burning velocity. The main hydrocarbon in natural gas is methane, with smaller amounts of heavier compounds, mainly species from C2 to C4. New experimental measurements have been performed by the heat flux method using a newly built flat flame adiabatic burner at atmospheric pressure. These measurements of laminar flame speeds are presented for components of natural gas, methane, ethane, propane and n-butane, as well as for binary and tertiary mixtures of these compounds representative of different natural gases available in the world. Results for pure alkanes were compared successfully to the literature. The composition of the investigated air/hydrocarbon mixtures covers a wide range of equivalence ratios, from 0.6 to 2.1 when it is possible to sufficiently stabilize the flame. Empirical correlations have been derived in order to predict accurately the flame velocity of a natural gas containing C1 up to C4 alkanes as a function of its composition and the equivalence ratio.

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Kaewpradap, Amornrat, and Satoshi Kadowaki. "Instability of H2-O2-CO2 Premixed Flames on Flat Burner." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50052.

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As the greenhouse emission problems, the combustion of hydrogen-air (H2-air) mixtures was investigated to consider the reduction of carbon dioxide (CO2) and the replacement of nitrogen N2 with CO2 was studied to reduce nitrogen oxide (NOx). Normally, the flame speed of H2-O2 mixtures is very fast thus it is necessary to control the limit of mixtures with CO2 addition as H2-O2-CO2 combustion. The limit of hydrogen was set and replaced by CO2 with O2:CO2 ratio as 1:3, 1:3.76 and 1:4 for this study. In this study, the combustion of H2-O2 -CO2 on flat burner at equivalence ratio ϕ=0.5 was investigated for 10, 15 and 20 L/min of flow rate of mixtures. When the ratio of CO2 increases, the power spectral density is lower, the ring of attractor is more complicated and the cellular flame become larger because the decrease of hydrogen replaced by CO2 affects the diffusive-thermal instability. Moreover, as the flow rate of mixtures increases, the power spectral density increases, and the reconstructed attractor and cell size become smaller due to decreasing of instability. The results show that the variation of CO2 and the flow rate of mixtures affect the instability of cellular premixed flames on flat burner.

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Haber, Ludwig, David Losh, Uri Vandsburger, William Baumann, and William Saunders. "Combustion and Heat Transfer Dynamics in a Premixed Laminar Flat-flame Burner." In 42nd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-460.

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Dam, Bidhan, Vishwanath Ardha, and Ahsan Choudhuri. "Laminar Flame Velocity of Syngas Fuels." In ASME 2010 Power Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/power2010-27294.

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The paper presents the experimental measurements of the laminar burning velocity of H2-CO mixtures. Hydrogen (H2) and carbon monoxide (CO) are the two primary constituents of syngas fuels. Three burner systems (nozzle, tubular, and flat flame) are used to quantify the effects of burner exit velocity profiles on the determination of laminar flame propagation velocity. The effects to N2 and CO2 diluents have been investigated as well, and it is observed that the effects of N2 and CO2 on the mixture burning velocity are significantly different. Finally, the burning velocity data of various syngas compositions (brown, bituminous, lignite and coke) are presented.

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Duan, Jin-hu, Xing Jin, Guang-yu Wang, and Dong-sheng Qu. "Direct absorption spectroscopy sensor for temperature and H2O concentration of flat flame burner." In Selected Proceedings of the Chinese Society for Optical Engineering Conferences held November 2015, edited by Weimin Bao and Yueguang Lv. SPIE, 2016. http://dx.doi.org/10.1117/12.2228075.

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Chander, Subhash, and Anjan Ray. "Investigation of Effect of Burner Diameter on Heat Transfer Characteristics of Methane/Air Flame Impinging on a Flat Surface." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72545.

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An experimental study has been conducted to investigate the effect of burner diameter on heat transfer characteristics of methane/air flames impinging normally to a flat surface. Three different tubes of internal diameter 8 mm, 9.7 mm and 12 mm were selected as flame holders. Effects of firing rates and equivalence ratios were studied on stagnation point and radial heat flux distribution. Three firing rates (0.25 kW, 0.40 kW and 0.50 kW) and three equivalence ratios (0.8, 1.0 and 1.2) were considered. Stagnation point heat flux was compared for different burner diameters under similar conditions. Radial heat flux distributions over the surface for different burner diameters under different firing rates and equivalence ratios were compared. It was found that the heat flux distribution was intimately related to flame shapes and sizes.

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Ermolaev, Grigoriy V., and Alexander V. Zaitsev. "Combustion rate and ignition delay time of boron particles in flat-flame burner experiments." In INTERNATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF COMBUSTION AND PROCESSES IN EXTREME ENVIRONMENTS (COMPHYSCHEM’20-21) and VI INTERNATIONAL SUMMER SCHOOL “MODERN QUANTUM CHEMISTRY METHODS IN APPLICATIONS”. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034586.

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Younis, L., A. A. Mohamad, and I. Wierzba. "Modeling of Premixed Combustion in a Double-Layered Radiant Porous Burner." In ASME 2001 Engineering Technology Conference on Energy. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/etce2001-17070.

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Abstract Porous radiant burners are widely used in industry to provide a uniform source of heat flux with reduced emissions. Such burners have provided high rates of heat transfer by radiation while preventing flame flashback. The work to be presented relates to the modeling of the combustion process in a double-layered flat porous burner. The burner employs a low porosity layer on the upstream side and high porosity layer on the downstream side of the homogenous fuel-air mixture flow. The nonequilibrium model is adopted. The energy equations for the gas and solid media are solved numerically with a one step reaction (Arrhenius type) energy release rate for the gas-phase. The solid phase is considered to be non-reactive. The thermophysical properties of the gas and solid phases are assumed to be functions of temperature. The effects of thermal conductivity and thickness of the layers on the flame stabilization within the porous medium and radiant energy output are investigated and discussed. The high thermal conductivity layer diffuses heat and thus has significant effects on the flame location and flame temperature. However, the high thermal conductivity of the layer also contributes to a decrease in the radiant energy. It was found that generally the flame stabilizes at the interface between the two layers. When the thermal conductivity of the upstream low porosity layer was too low (e.g. 0.1 W/m.K), the flame was stabilized within the low porosity layer.

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