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Sunday, July 12, 2020 | History

3 edition of Electric ignition of lycopodium powder in a modified Hartmann apparatus found in the catalog.

Electric ignition of lycopodium powder in a modified Hartmann apparatus

T. A. Kubala

Electric ignition of lycopodium powder in a modified Hartmann apparatus

by T. A. Kubala

  • 85 Want to read
  • 28 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in [Avondale, MD] .
Written in English

    Subjects:
  • Lycopodium powder -- Electric ignition.

  • Edition Notes

    Includes bibliographical references.

    Statementby T.A. Kubala, F.J. Perzak, and E.L. Litchfield.
    SeriesReport of investigations ;, 8600, Report of investigations (United States. Bureau of Mines) ;, 8600.
    ContributionsPerzak, F. J., Litchfield, E. L.
    Classifications
    LC ClassificationsTN23 .U43 no. 8600, QD516 .U43 no. 8600
    The Physical Object
    Pagination9 p. :
    ID Numbers
    Open LibraryOL4264074M
    LC Control Number81009944

    Electric spark discharge is the main ignition mode in laboratory experiments and industrial application, such as gas or dust explosion and inter combustion engine, because the discharge process is. offers 51 lycopodium powder chemical formula products. About 11% of these are Electronics Chemicals, 11% are Petroleum Additives, and 11% are Plastic Auxiliary Agents. A wide variety of lycopodium powder chemical formula options are available to you, such as grade standard, feature, and shape.

    Lycopodium Clavatum Spore Powder Introduction. The name "Lycopodium" comes from the Greek language and is composed by "lico" meaning wolf and "podio" meaning foot and it is due to the similarity of the plant to the shape of a wolf's foot. The MIT and MIE of PP dusts increased when the powder concentration of APP increased. Addai et al. [4] investigated the e ects of adding inert powders (magnesium oxide, ammonium sulphate, and sand) on the ignition sensitivity (MIT and MIE) of combustible dust (brown coal, lycopodium, toner, niacin, corn starch, and high density polyethylene Author: Chendi Lin, Yingquan Qi, Xiangyang Gan, Hao Feng, Yan Wang, Wentao Ji, Xiaoping Wen.

    A parametric study of lycopodium dust flame. Journal of Engineering Mathematics, Mar Mehdi Bidabadi, The results obtained from the presented model are in reasonable agreement with experimental data for lycopodium particles. An increase in moisture content causes a reduction in burning velocity owing to moisture evaporation resistance Cited by:   Dusts which do not propagate flame away from the ignition source are considered “non-explosible” (Group B). Group B powders are known to present a fire hazard and may be explosible at elevated temperatures (e.g. in dryers) Modified Hartmann Apparatus 5 6. Illustration of the potential hazard of even thin dust layers.


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Electric ignition of lycopodium powder in a modified Hartmann apparatus by T. A. Kubala Download PDF EPUB FB2

Electric ignition of lycopodium powder in a modified Hartmann apparatus Paperback – January 1, by T. Kubala (Author) See all formats and editions Hide other formats and editions. Price New from Used from Paperback Author: T.

Kubala. - Buy Electric ignition of lycopodium powder in a modified Hartmann apparatus book online at best prices in india on Read Electric ignition of lycopodium powder in a modified Hartmann apparatus book reviews & author details and Format: Paperback.

Electric ignition of lycopodium powder in a modified Hartmann apparatus / By T. (Theodore A.) Kubala, E. (Elton L.) Litchfield and F. (Frank J.) Perzak Abstract. The goal of our study was to measure the minimum ignition energy (MIE) for each of the above mentioned powders using a modified version of the L Hartmann apparatus.

KUBALA T A, PERZAK F J, LITCHFIELD E L. Electric ignition of lycopodium powder in a modified Hartmann apparatus [C]// Bureau of Mines RI. Google Scholar [30]Cited by: Laar () studied capacitive-electric-spark ignition of clouds of g/m 3 lycopodium dust in air in a Hartmann tube of volume L.

They confirmed that pronounced reduction of MIE occurred if an appreciable series inductance was introduced in the spark discharge circuit. Lycopodium powder is a yellow-tan dust-like powder, consisting of the dry spores of clubmoss plants, or various fern it is mixed with air, the spores formed are highly flammable and are used to create flashes or flames as theatrical special effects.

Lycopodium powder is a fine yellow powder consisting of the dried spores from a type of club moss. When this powder is airborne it becomes highly flammable and can be.

Lycopodium Powder Lycopodium powder is easily combustible, so keep a fire extinguisher and fire blanket within close reach The can will become hot and its lid will shoot upwards, so proceed with caution Do not come into direct contact with/inhale the Lycopodium powder.

Its. DRAGON'S BREATH, 1 ounce Lycopodium in Squirt Bottle (30c c). Flame from Fingertips. When squirted through an open flame, this fine powder creates a jet of fire. The flame burns really clean.5/5.

Dragon Breath is a combustible powder used for fire effects and flashes. It is highly flammable when air born and in contact with flames or other sources of ignition. When the powder is dispersed into a fine mist near a flame, it ignites into a spectacular fireball.

This 5/5(7). Flammable solid. SMALL FIRE: Use DRY chemical powder. LARGE FIRE: Use water spray or fog. Cool containing vessels with water jet in order to prevent pressure build-up, auto-ignition or explosion.

Special Remarks on Fire Hazards: Material in powder form, capable of creating a dust explosion. Special Remarks on Explosion Hazards: Not available. A prototype apparatus was constructed using the Spark Test Apparatus (STA) as described in EN50 as modified in project SMT4-CTThe dust dispersion chamber is based on the principles, and where practicable, the dimensions of the MIKE 3 minimum ignition by: 7.

Additional Physical Format: Online version: Kubala, T.A. (Theodore A.). Electric ignition of lycopodium powder in a modified Hartmann apparatus. Pgh. Electric discharge ignition has been reinvestigated in a modified hartmann apparatus for lycopodium powder with air.

Minimum stored energy to ignite aid dispersions of lycopodium was 25 to 30 mj; ignition occurred with 1 gram of lycopodium dispersed into the Liter vessel.

An extensive review of effects of turbulence on dust explosions has recently been made by Amyotte el al. ~ The present work was undertaken to provide a quan- titative estimate of the effect of turbulence on the maximum rate of pressure rise for dust explosions in the Hartmann apparatus (or bomb).Cited by: A novel apparatus for testing the minimum ignition energies of flammable dusts is introduced.

Unlike the conventional apparatus (the Hartmann tube), this new apparatus employs a vibrating mesh to. Electric ignition of lycopodium powder in a modified Hartmann apparatus (Report of investigations) out of 5 stars 5.

£ £ FREE Delivery. Electric ignition of lycopodium powder in a modified Hartmann apparatus. by T. Kubala | 1 Murphy's Dragon's Breath.

£ £ 7. £ delivery. Usually dispatched within 2 to. (d) Modified Hartmann apparatus: as (c) above, but with electric coil igniter. (e) Furnace qpparatus: a vertical silica tube, open at the bottom, heated externally by an electrical winding. The dust is blown through the tube from the top.

In apparatus (a) to (d) the source of ignition is regarded as small, in apparatus (e) it is larger. Experimental investigations of the minimum ignition energy and the minimum ignition temperature of inert and combustible dust cloud mixtures In this present paper a modified Godbert-Greenwald furnace was used.

The minimum ignition energy was measured using an electric spark igniter (Hartmann apparatus MIE III by the courtesy of. Ignition source Pmax(barg) dP/dt (bar/s) KSt (bar m/s) Lycopodium Electric fuse head 66 1 kJ Sobbe 5 kJ Sobbe 10 kJ Sobbe Aluminium nm (sample EC//07) 10 kJ Sobbe Commissioning tests – .We also performed measurements of the minimum ignition energy (MIE) in the Modified Hartmann Tube Apparatus (MIKE3).

We tested the following mixtures: Lycopodium–Nicotinic acid/air, Ascorbic acid–Nicotinic acid/air, Lycopodium–Ascorbic acid/air and Lycopodium–Nicotinic acid–Ascorbic acid/air.

2. Materials and methods Materials.MIKE 3 versus HARTMANN apparatus: comparison of measured minimum ignition energy (MIE) Article (PDF Available) in Journal of Hazardous Materials (1) April with Reads.