Results 251 to 260 of about 6,549 (284)

Requirements for a minimum ignition energy standard

Process Safety Progress, 2003
AbstractFires and explosions are serious hazards in the process industries. Mitigation methods, such as suppression and venting, can be expensive. Ideally, the best option would be to avoid fire or explosion, which may be accomplished by either removing the explosible fuel/oxidant mixture, or the ignition source.One of the most overlooked and ...
C. James Dahn, Ashok G. Dastidar
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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
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The Formation of Sparks of Minimum Ignition Energy

IEEE Transactions on Industry Applications, 1978
A study has been made of incendiary discharges with minimum energy and between metal electrodes. The circuit used has a characteristic relaxation time smaller than the time required to distinquish several successive stages in spark formation. Examples are provided to show that the character and duration of each stage as well as the possibility to ...
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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
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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
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Estimation of the minimum energy of ignition of a layer of metal particles ignited by an instantaneous source

Combustion, Explosion and Shock Waves, 1983
The authors of this paper propose an approximate method of calculating one of the commonest measures of fire and explosion risk encountered in safety engineering practice: the minimum ignition energy of a layer of gaseous suspension of metal particles. This determination is also associated with the estimation of the critical mass particle concentration,
V. I. Rozenband, V. A. Elizarova, V. A. Olishevets, V. M. Selivanova   +3 more
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Measurement of minimum ignition energies of dust clouds in the <1mJ region

Journal of Hazardous Materials, 2007
The lower energy limit of current standard test apparatus for determining the minimum ignition energy (MIE) of dust clouds is in the range of 1-3mJ. This is a quite severe limitation because many dusts ignite readily at this energy level. A new spark generator, capable of producing synchronised sparks of very low energies and with an integrated system ...
Erlend, Randeberg, Rolf K, Eckhoff
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Effect of particle morphology on dust minimum ignition energy

Powder Technology, 2019
Abstract Dust explosions are a threat to process industries. Studies have examined the effect of (particle size, chemical composition, and polydispersity) on dust explosion potential and severity; however the effect of particle morphology on dust explosions has largely been neglected.
Pranav Bagaria, Shrey Prasad, Jingze Sun, Robert Bellair, Chad Mashuga   +4 more
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On minimum energy of ignition of methane-air mixtures

Russian Journal of Physical Chemistry B, 2009
The spark ignition of methane-air mixtures of various compositions with the help of a high-voltage source based on a piezoceramic step-up transformer with a high output resistance was studied. The experiments were performed at volumetric flow rates up to 20 cm/s and discharge gap widths up to 6 mm.
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Chronology and topography of sparks at minimum energy for ignition

Combustion and Flame, 1961
Abstract Microsecond exposure schlieren observations of ignition kernels and developing flames are reported for a set of minimum energy conditions holding for electrostatic spark ignition of 8·5 percent methane-air mixtures at 0·1 atmosphere initial pressure. Time of appearance of a flame and the extent of influence of the shock wave generated by the
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