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Relevant bibliographies by topics / Adiabatic Flame Temperature

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Academic literature on the topic 'Adiabatic Flame Temperature'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Adiabatic Flame Temperature"

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Sakhrieh, Ahmad. "The adiabatic flame temperature and laminar flame speed of methane premixed flames at varying pressures." Acta Periodica Technologica, no. 50 (2019): 220–27. http://dx.doi.org/10.2298/apt1950220s.

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This paper studies the influence of equivalence ratio, pressure and initial temperature on adiabatic flame temperature and laminar flame speed of methane-air mixture. The results indicate that adiabatic flame temperature is weakly correlated with pressure. The adiabatic flame temperature increases only by about 50?C as a result of 30 bar pressure increase. The flame speed is inversely proportional to pressure. The maximum adiabatic flame temperature and flame speed occur at the stoichiometric ratio, ?=1. The percent increase in the flame speed was about 400% when the initial temperature of the

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Lee, Dae-Hee, and B. Bollinger. "The Development of Combustion Laboratory Test Apparatus for Mechanical Engineers." International Journal of Mechanical Engineering Education 24, no. 1 (1996): 1–10. http://dx.doi.org/10.1177/030641909602400101.

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A combustion laboratory test apparatus has been developed and put to use in the mechanical engineering measurement course at the California State University, Sacramento. The objectives of this apparatus are to study the characteristics of a premixed flame for a range if air/propane mixtures (from near stoichiometric to rich to highly rich) and to examine the principles of chemical thermodynamics of combustion by comparing the calculated adiabatic flame temperature to the measured adiabatic flame temperature, and by doing an energy balance on the flame. The apparatus consists of a burner that i

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Conroy, P. J., P. Weinacht, and M. J. Nusca. "Parametric Erosion Investigation: Propellant Adiabatic Flame Temperature." Defence Science Journal 52, no. 1 (2002): 77–85. http://dx.doi.org/10.14429/dsj.52.2152.

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Shehata, Mohamed S., Mohamed M. ElKotb, and Hindawi Salem. "Combustion Characteristics for Turbulent Prevaporized Premixed Flame Using Commercial Light Diesel and Kerosene Fuels." Journal of Combustion 2014 (2014): 1–17. http://dx.doi.org/10.1155/2014/363465.

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Experimental study has been carried out for investigating fuel type, fuel blends, equivalence ratio, Reynolds number, inlet mixture temperature, and holes diameter of perforated plate affecting combustion process for turbulent prevaporized premixed air flames for different operating conditions. CO2, CO, H2, N2, C3H8, C2H6, C2H4, flame temperature, and gas flow velocity are measured along flame axis for different operating conditions. Gas chromatographic (GC) and CO/CO2infrared gas analyzer are used for measuring different species. Temperature is measured using thermocouple technique. Gas flow

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Ugarte, Orlando J., and V’yacheslav Akkerman. "Computational Study of Premixed Flame Propagation in Micro-Channels with Nonslip Walls: Effect of Wall Temperature." Fluids 6, no. 1 (2021): 36. http://dx.doi.org/10.3390/fluids6010036.

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This investigation evaluates the propagation of premixed flames in narrow channels with isothermal walls. The study is based on the numerical solution of the set of fully-compressible, reacting flow equations that includes viscosity, diffusion, thermal conduction and Arrhenius chemical kinetics. Specifically, channels and pipes with one extreme open and one extreme closed are considered such that a flame is sparked at the closed extreme and propagates towards the open one. The isothermal channel walls are kept at multiple constant temperatures in the range from Tw=300 K to 1200 K. The impact o

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JU, YIGUANG, HONGSHENG GUO, KAORU MARUTA, and FENGSHAN LIU. "On the extinction limit and flammability limit of non-adiabatic stretched methane–air premixed flames." Journal of Fluid Mechanics 342 (July 10, 1997): 315–34. http://dx.doi.org/10.1017/s0022112097005636.

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Extinction limits and the lean flammability limit of non-adiabatic stretched premixed methane–air flames are investigated numerically with detailed chemistry and two different Planck mean absorption coefficient models. Attention is paid to the combined effect of radiative heat loss and stretch at low stretch rate. It is found that for a mixture at an equivalence ratio lower than the standard lean flammability limit, a moderate stretch can strengthen the combustion and allow burning. The flame is extinguished at a high stretch rate due to stretch and is quenched at a low stretch rate due to rad

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Jeon, Min-Kyu, and Nam Il Kim. "Fuel pyrolysis and its effects on soot formation in non-premixed laminar jet flames of methane, propane, and DME." Mathematical Modelling of Natural Phenomena 13, no. 6 (2018): 56. http://dx.doi.org/10.1051/mmnp/2018052.

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High-temperature combustion techniques have recently attracted interest with regard to the improvement of the thermal efficiency of combustion systems. Fuel pyrolysis is an important factor, as it can affect such flame structures at high temperatures. In this study, the pyrolysis of methane, propane, and dimethyl ether (DME) was measured and the results were compared with theoretical predictions. Pyrolyzed fuels were quenched to room temperature before being introduced onto the burner. Thus, the pyrolysis effects on laminar non-premixed jet flames could be distinguished from many other complex

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Aljerf, Loai, and Nuha AlMasri. "Flame Propagation Model and Combustion Phenomena: Observations, Characteristics, Investigations, Technical Indicators, and Mechanisms." Journal of Energy Conservation 1, no. 1 (2018): 31–40. http://dx.doi.org/10.14302/issn.2642-3146.jec-18-2232.

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Critical conditions are usually obtained for ignition in a self-heating solid system consisting of two components generating heat independently, one component being inexhaustible and the other exhaustible by either simple first order or autocatalytic reaction. Ignition depends upon whether the exhaustible component can cause a temperature rise in excess of the upper stationary, but unstable, value possible for the inexhaustible component reacting alone. The system provides a theoretical model for some commonly occurring examples of self-heating and ignition in porous solids containing oxidisab

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Abe, Keisuke, Ade Kurniawan, Masafumi Sanada, Takahiro Nomura, and Tomohiro Akiyama. "Combustion Synthesis Ironmaking: Investigation on Required Carbon Amount in Raw Material from the Viewpoint of Adiabatic Flame Temperature Calculation." Indonesian Journal of Chemistry 19, no. 3 (2019): 696. http://dx.doi.org/10.22146/ijc.38359.

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Combustion synthesis (CS) is a simple and very fast method to synthesize a target material. New ironmaking method via the CS using carbon-infiltrated iron ore was proposed, and the possible conditions for the method were investigated. Adiabatic flame temperatures (Tad) of the CS reaction, maximum reachable temperatures in an adiabatic system, were calculated to estimate the sample temperature during the CS. To reach the adiabatic temperature of 1811 K, 23.9, 27.9, and 29.3 wt.%-C were required for Fe2O3, Fe3O4, and FeO, respectively. When the carbon amount is higher than the calculated one, mo

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Yue, Meng, Mao-Zhao Xie, Jun-Rui Shi, Hong-Sheng Liu, Zhong-Shan Chen, and Ya-Chao Chang. "Numerical and Experimental Investigations on Combustion Characteristics of Premixed Lean Methane–Air in a Staggered Arrangement Burner with Discrete Cylinders." Energies 13, no. 23 (2020): 6397. http://dx.doi.org/10.3390/en13236397.

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Premixed combustion of lean methane–air in an artificial porous media burner with staggered alumina cylinders was experimentally and numerically performed. Numerical simulations were conducted at gas mixture velocities of 0.43–0.86 m/s and equivalence ratios of 0.162 and 0.243, respectively. Through comparison with experimental results, temperature distribution, peak temperature and flame propagation velocity are analyzed and discussed in detail. The numerical calculated temperature profile over the axis of the combustor coincided well with test data in the post-flame zone, however a certain d

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Dissertations / Theses on the topic "Adiabatic Flame Temperature"

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Virk, Akashdeep Singh. "Heat Transfer Characterization in Jet Flames Impinging on Flat Plates." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/52985.

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The experimental work involves calculation of radial distribution of heat transfer coefficient at the surface of a flat Aluminium plate being impinged by a turbulent flame jet. Heat transfer coefficient distribution at the surface is computed from the measured heat flux and temperature data using a reference method and a slope method. The heat transfer coefficient (h) has a nearly bell shaped radial distribution at the plate surface for H/d =3.3. The value of h drops by 37 % from r/d =0 to r/d= 2. Upon increasing the axial distance to H/d = 5, the stagnation point h decreased by 15%. Adiabati

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Le, Thuy Minh Hai. "Flammability Characteristics of Hydrogen and Its Mixtures with Light Hydrocarbons at Atmospheric and Sub-atmospheric Pressures." Thesis, 2013. http://hdl.handle.net/1969.1/150966.

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Knowledge of flammability limits is essential in the prevention of fire and explosion. There are two limits of flammability, upper flammability limit (UFL) and lower flammability limit (LFL), which define the flammable region of a combustible gas/vapor. This research focuses on the flammability limits of hydrogen and its binary mixtures with light hydrocarbons (methane, ethane, n-butane, and ethylene) at sub-atmospheric pressures. The flammability limits of hydrogen, light hydrocarbons, and binary mixtures of hydrogen and each hydrocarbon were determined experimentally at room temperature (20

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Chang, Chih-Heng, and 張智恒. "Estimating the inerting effect on combustible mixtures consisting of carbon, hydrogen, oxygen by using theoretical adiabatic flame temperature." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/54019350200307077851.

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碩士<br>中國醫藥大學<br>職業安全衛生學系碩士班<br>98<br>This study proposed a model to estimate inerting effect on flammability limits for organic compounds made up of carbon, hydrogen and oxygen. The energy balance and assumption of constant adiabatic flame temperature were used to establish model. Methane, propane, isobutane, ethylene, propylene, methyl formate, dimethyl ether, methanol and acetone were selected as examples to validate the proposed model. Nitrogen, carbon dioxide, water, 1,1,1,2,2-pentafluoroethane (HFC-125) and chloroform (CHCl3) were used as inert. The mean absolute relative deviations betwe

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Book chapters on the topic "Adiabatic Flame Temperature"

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Zhao, Ran, Hao Liu, Xiaojiao Zhong, et al. "The Ignition Delay, Laminar Flame Speed and Adiabatic Temperature Characteristics of n-Pentane, n-Hexane and n-Heptane Under O2/CO2 Atmosphere." In Cleaner Combustion and Sustainable World. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30445-3_10.

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Kara, Ozan, and Arif Karabeyoglu. "Hybrid Propulsion System: Novel Propellant Design for Mars Ascent Vehicles." In Propulsion - New Perspectives and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96686.

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This chapter briefly introduces hybrid rocket propulsion for general audience. Advantageous of hybrid rockets over solids and liquids are presented. This chapter also explains how to design a test setup for hybrid motor firings. Hybrid propulsion provides sustainable, safe and low cost systems for space missions. Therefore, this chapter proposes hybrid propulsion system for Mars Ascent Vehicles. Paraffin wax is the fuel of the rocket. Propulsion system uses CO2/N2O mixture as the oxidizer. The goal is to understand the ignition capability of the CO2 as an in-situ oxidizer on Mars. CO2 is known as major combustion product in the nature. However, it can only burn with metallic powders. Thus, metallic additives are added in the fuel grain. Results show that CO2 increase slows down the chemical kinetics thus reduces the adiabatic flame temperature. Maximum flammability limit is achieved at 75% CO2 by mass in the oxidizer mixture. Flame temperature is 1700 K at 75% CO2. Ignition quenches below the 1700 K.

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"Adiabatic Flame Temperatures of Hydrocarbons." In Combustion. Elsevier, 2008. http://dx.doi.org/10.1016/b978-0-12-088573-2.00015-4.

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"Adiabatic flame temperatures of hydrocarbons." In Combustion. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-12-407913-7.15003-0.

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Martinho Simões, José A., and Manuel Minas da Piedade. "Overview of Condensed Phase Methods." In Molecular Energetics. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195133196.003.0010.

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This part includes a discussion of the main experimental methods that have been used to study the energetics of chemical reactions and the thermodynamic stability of compounds in the condensed phase (solid, liquid, and solution). The only exception is the reference to flame combustion calorimetry in section 7.3. Although this method was designed to measure the enthalpies of combustion of substances in the gaseous phase, it has very strong affinities with the other combustion calorimetric methods presented in the same chapter. Most published enthalpies of formation and reaction in the condensed phase were determined by calorimetry (see databases indicated in appendix B). It is therefore not surprising that the discussion of calorimetric methods occupies a large fraction of part II. The heart of a calorimeter is the calorimeter proper (also called measuring system or sample cell), which contains the reaction vessel, where the chemical reaction or phase transition under study occurs. Sometimes the calorimeter proper coincides with the reaction vessel. For example, in the setup shown in figure 6.1a, which is typical of many combustion calorimeters, the reaction vessel is placed inside the calorimeter proper. In the arrangement of figure 6.1b, used in many reaction-solution calorimeters, the calorimeter proper is also the reaction vessel. Normally, a controlled-temperature jacket surrounds the calorimeter proper. Other parts besides thermometers, commonly found in calorimeters, are stirring, heating, cooling, and ignition devices. Some of these devices are placed inside the calorimeter proper or cross its boundaries and are also considered to be part of it. In modern instruments, the data acquisition and many steps of the calorimetric experiments are usually computer-controlled. Calorimeters of many different designs have been constructed and operated. However, these are all variations of a few basic categories. For example, based on the heat exchange mode between the calorimeter proper and the surrounding jacket, it is convenient to distinguish three main classes of calorimeters: adiabatic, heat conduction, and isoperibol. In a perfectly adiabatic calorimeter no heat is transferred between the calorimeter proper and the jacket (the corresponding heat flow rate Φ = dQ/dt = 0, where Q represents the heat exchanged and t is time).

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Conference papers on the topic "Adiabatic Flame Temperature"

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Lilley, David. "Adiabatic Flame Temperature Calculation." In 1st International Energy Conversion Engineering Conference (IECEC). American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-5979.

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Lilley, David. "Adiabatic Flame Temperature Calculation: A Simple Approach for General CHONS Fuels." In 42nd AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-817.

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Dülger, Zafer. "Adiabatic Flame Temperature and Product Composition for Lean Combustion of Hydrogen-Methane Combination." In ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/cie1994-0460.

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Abstract Adiabatic combustion of methane (natural gas)-hydrogen mixtures is analyzed The adiabatic flame temperature and products composition (especially NOx and CO2 concentrations) variation with excess air (fuel-air equivalence ratio), hydrogen enrichment of methane, and reactant temperature is determined It is shown that reductions in NOx and CO2 emissions are possible with the extended lean limit of combustion of methane associated with hydrogen enrichment CO2 concentrations are also reduced with hydrogen enrichment, reductions being dependent upon the degree of enrichment.

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Boyde, Jan Michael, Andreas Fiolitakis, Massimiliano Di Domenico, and Manfred Aigner. "Correlations for the Laminar Flame Speed, Adiabatic Flame Temperature and Ignition Delay Time for Methane, Ethanol and n-Decane." In 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-510.

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Tourlidakis, A., and A. Malkogianni. "Influence of the Air Preheat Temperature and the Fuel Preheat Temperature in the Adiabatic Flame Temperature for Gaseous Fuels of Low Heating Value." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69977.

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Adiabatic flame temperature is of significant importance for the design of a GT combustor, as it is the temperature under the condition of no heat loss takes place from the combustion system. This importance arises from the fact that it plays an important role in the pollutants emitted from the system, such as carbon oxides and nitrogen oxides. Additionally, the temperature also affect the thermal stresses set up in the combustion system, such stress may lead to the deterioration of the chamber if not well controlled. Consequently, it is essential before the construction of the combustion cham

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Kim, H. S., V. K. Arghode, and A. K. Gupta. "Hydrogen Addition Effects on Swirl Stabilized Methane Flame." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34133.

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Effect of hydrogen addition in methane-air premixed flames has been examined from a swirl stabilized combustor under confined flame conditions. Different swirlers have been examined to investigate the effect of swirl intensity on enriching methane-air flame with hydrogen in a laboratory-scale pre-mixed combustor operated at 5.81 kW. The flame stability was examined at same head load (5.81 kW) for various parameters such as amount of hydrogen addition, combustion air flow rates and swirl strengths. This was done by comparing adiabatic flame temperatures at the lean flame limit. The combustion c

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Prakash, Shaurya, and Yin Fee Phang. "High Temperature Microsystems: Recent Advances in Microcombustion." In ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2009. http://dx.doi.org/10.1115/icnmm2009-82146.

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Recent times have seen a growing interest in developing next generation energy systems and devices for building very small engines, power plants, and high temperature microchemical reactors, all running on the combustion of hydrocarbon fuels due to their inherently high energy densities. In particular, much interest lies in creating small-scale fuel reformers to produce hydrogen and/or syngas for fuel cells. Over the past decade, most microscale combustion systems that have been developed employ catalytic and heterogeneous combustion processes. In this paper, discussion towards the development

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Zhang, Qingguo, David R. Noble, Andrew Meyers, Kunning Xu, and Tim Lieuwen. "Characterization of Fuel Composition Effects in H2/CO/CH4 Mixtures Upon Lean Blowout." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68907.

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This paper describes measurements of the dependence of lean blowout limits upon fuel composition for H2/CO/CH4 mixtures. Blowout limits were obtained at fixed approach flow velocity, reactant temperature, and combustor pressure at several conditions up to 4.4 atm and 470 K inlet reactants temperature. Consistent with prior studies, these results indicate that the percentage of H2 in the fuel dominates the mixture blowoff characteristics. That is, flames can be stabilized at lower equivalence ratios, adiabatic flame temperatures, and laminar flame speeds with increasing H2 percentage. Various m

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Dong, Mingchun, and David G. Lilley. "Impinging Flame Prediction for CVD Diamond Synthesis." In ASME 1993 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/cie1993-0056.

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Abstract High-temperature flames impinging normally onto adiabatic surfaces are considered. These are important in the CVD (chemical vapor deposition) diamond synthesis method for diamond growth on surfaces. Problems of complex chemistry and the mechanism of diamond growth are discussed. The present paper has illustrated the effects of several key parameters on the substrate surface temperature and flowfield for CVD diamond synthesis by impinging oxy-acetylene jet flames. The studies were concerned with combustion flowfield predictions, oxy-acetylene flames, axisymmetric-vertical impingement o

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Watanabe, Hirotatsu, Santosh J. Shanbhogue, and Ahmed F. Ghoniem. "Impact of Equivalence Ratio on the Macrostructure of Premixed Swirling CH4/Air and CH4/O2/CO2 Flames." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43224.

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Premixed CH4/O2/CO2 flames (oxy-flames) and CH4/air flames (air-flames) were experimentally studied in a swirl-stabilized combustor. For comparing oxy and air flames, the same equivalence ratio and adiabatic flame temperature were used. CO2 dilution was adjusted to attain the same adiabatic temperature for the oxy-flame and the corresponding air-flame while keeping the equivalence ratio and Reynolds number (=20,000) the same. For high equivalence ratios, we observed flames stabilized along the inner and outer shear layers of the swirling flow and sudden expansion, respectively, in both flames.

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