Results 211 to 220 of about 15,206 (264)

Minimum ignition energy for laser spark ignition

Proceedings of the Combustion Institute, 2005
Abstract 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 ...
exaly   +2 more sources

Dependence of Minimum Ignition Energy on Ignition Parameters

Combustion Science and Technology, 1990
Abstract 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 energies

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
openaire   +1 more source

Analysis of Ignition Energy Efficiency for Automotive Ignition Coils

2010 Asia-Pacific Power and Energy Engineering Conference, 2010
The performance of ignition coils is an important and complicated consideration of automotive power system. How to analyze the effect of technological parameters on the ignition energy with the help of ignition coils performance simulation model is proposed in this paper.
Ning Chen, Yun Zhang
openaire   +1 more source

Ignition Probability and Absolute Minimum Ignition Energy in Fuel Sprays

Combustion Science and Technology, 1992
Abstract Ignition in a one dimensional spray by a short duration source is modeled numerically. The probabilistic nature of spray ignition is discussed using a deterministic approach. The ignition source is modeled by a hot gas region of a defined thickness simulating a pilot flame or a low temperature spark source.
S. D. WEHE, N. ASHGRIZ
openaire   +1 more source

Effects of energy deposition schedule on minimum ignition energy in spark ignition of methane/air mixtures

Proceedings of the Combustion Institute, 2002
A two-dimensional numerical analysis with elementary reactions including ion-molecule reactions has been performed to investigate the effect of energy deposition schedule on the minimum ignition energy in the composite spark ignition of methane/air mixtures.
Takao Yuasa, Shinichi Kadota, Mitsuhiro Tsue, Michikata Kono, Hiroshi Nomura, Yasushige Ujiie   +5 more
openaire   +1 more source

On the minimum ignition energy (MIE) for propane/air

Journal of Hazardous Materials, 2010
A 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
openaire   +2 more sources

Calculation of minimum ignition energy of premixed gases

Journal of Hazardous Materials, 2003
The 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, Akifumi, Takahashi, Kazuaki, Tokuhashi   +2 more
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Determining Minimum Ignition Energies and Quenching Distances of Difficult-To-Ignite Compounds

Journal of Testing and Evaluation, 2003
Abstract Difficulties experienced using ASTM Method E 582-88 for determination of minimum ignition energies of compounds more difficult to ignite than simple hydrocarbons are described along with remedies for overcoming those difficulties.
N Dean Smith, WA Mitchell, MW Tufts
openaire   +1 more source

Laser ignition of explosives: Effects of laser wavelength on the threshold ignition energy

Journal of Energetic Materials, 1994
Abstract A method, based on a tunable 180 W CW CO2-laser (9–11 μm), for measuring the effect of laser wavelength, and hence optical absorbance coefficient, on the threshold ignition energy of explosives, has been developed. To determine how the laser beam interacts with the high explosives, a theory for the connection between the ignition energy and ...
Henric Östmark, Magnus Carlson, Katrin Ekvall   +2 more
openaire   +1 more source