Results 241 to 250 of about 6,549 (284)
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Calculation of minimum ignition energy of premixed gases
Journal of Hazardous Materials, 2003The minimum ignition energy of premixed gases has been calculated by using two theoretical expressions and compared with the experimental data. One expression considers the amount of energy that the minimal flame should have, and the other the heat loss from the surface of the minimal flamelet.
Shigeo, Kondo +2 more
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On the minimum ignition energy (MIE) for propane/air
Journal of Hazardous Materials, 2010A copy of the standard ASTM spark generator for determination of MIEs of gases and vapours was built and measurements to determine MIE of propane/air at normal atmospheric conditions were performed. However, the ASTM standard does not prescribe any statistical procedure for deriving MIE values from primary test data.
R K, Eckhoff, M, Ngo, W, Olsen
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Minimum ignition energy for laser spark ignition
Proceedings of the Combustion Institute, 2005Abstract Combustion ignition by electrical sparks and nonresonant laser sparks is preceded by breakdown, electron heating, relaxation of internal plasma energy, shock wave generation and propagation, and subsonic flows. Measurements and model calculations of these processes (which occur over times of 10 −12 –10 −1 s) in laser sparks show that the ...
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Combustion and Flame, 2019 The minimum energy requirements for ensuring (i) just successful ignition and (ii) successful self-sustained flame propagation without the assistance of an external energy source following a successful ignition event have been analysed for the forced ...
Vassilios Papapostolou +2 more
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Combustion and Flame, 2003 Reducing engine pollutant emissions and fuel consumption is an important challenge. Lean-burning engines are a promising development; however, such engines require high-energy ignition systems for typical working conditions (equivalence ratio, phi< 0.7).
Laurent Zimmer, Yuji Ikeda
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Numerical study on the minimum ignition energy of a methane-air mixture
Fuel, 2021 In this paper, a semi-detailed mechanism is used to calculate the minimum ignition energy (MIE) of methane-air mixtures, with all calculations conducted using ANSYS Fluent software.
Cunxi Liu, Henry J Curran
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On the critical flame radius and minimum ignition energy for spherical flame initiation
Proceedings of the Combustion Institute, 2011 Spherical flame initiation from an ignition kernel is studied theoretically and numerically using different fuel/oxygen/helium/argon mixtures (fuel: hydrogen, methane, and propane).
Zheng Chen +2 more
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Fire Technology, 1969
In this, the final part of a two-part report, the authors take a look at the electrical energy required to ignite certain solids in air and in oxygen both at 1 atmosphere and at hyperbaric pressures.
E. L. Litchfield, T. A. Kubala
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In this, the final part of a two-part report, the authors take a look at the electrical energy required to ignite certain solids in air and in oxygen both at 1 atmosphere and at hyperbaric pressures.
E. L. Litchfield, T. A. Kubala
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Dependence of Minimum Ignition Energy on Ignition Parameters
Combustion Science and Technology, 1990Abstract Using two mathematical models (one allowing for pressure variations, and the other assuming the pressure to be uniform), the minimum ignition energies of a stoichiometric methane-air mixture are calculated. The effect of the initial pressure wave generated by the spark on minimum ignition energy is studied by comparing the results of the two ...
ABDELKADER FRENDI, MERWIN SIBULKIN
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Minimum ignition energy of nylon fibres
Journal of Loss Prevention in the Process Industries, 2008Abstract The aim of this paper is to provide new experimental data on the minimum ignition energy (MIE) of clouds of fibres dispersed in the air. Nylon fibres from an Italian flock manufacturer (diameter between 10 and 27.4 μm, length between 600 and 1800 μm) were collected and tested in a modified Hartmann tube in order to measure the MIE.
MARMO, LUCA, CAVALLERO D.
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