Ignition study of acetone/air mixtures by using laser-induced spark
| Autor: | Denis Blanc, Virginie Tihay, Philippe Gillard |
|---|---|
| Přispěvatelé: | Sciences pour l'environnement (SPE), Centre National de la Recherche Scientifique (CNRS)-Université Pascal Paoli (UPP), Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges) |
| Rok vydání: | 2012 |
| Předmět: |
Work (thermodynamics)
Environmental Engineering Health Toxicology and Mutagenesis 0211 other engineering and technologies Analytical chemistry 02 engineering and technology 7. Clean energy law.invention Acetone chemistry.chemical_compound Physics::Plasma Physics law Environmental Chemistry Laminar burning velocity Waste Management and Disposal Probability 021110 strategic defence & security studies Range (particle radiation) Chemistry Air Lasers Ignition probability Plasma 021001 nanoscience & nanotechnology Laser Pollution Ignition system Minimum ignition energy Attenuation coefficient Laser breakdown [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Atomic physics 0210 nano-technology |
| Zdroj: | Journal of Hazardous Materials Journal of Hazardous Materials, Elsevier, 2012, 209-210, pp.372-378. ⟨10.1016/j.jhazmat.2012.01.040⟩ |
| ISSN: | 0304-3894 1873-3336 |
| DOI: | 10.1016/j.jhazmat.2012.01.040 |
| Popis: | International audience; The breakdown and the laser-induced spark ignition of acetone-air mixtures were experimentally studied using a nanosecond pulse at 1064 nm from a Q-switched Nd:YAG laser. The breakdown was first characterized for different mixtures with acetone and air. This part of the work highlighted the wide variation in the energy absorbed by the plasma during a breakdown. We also demonstrated that the presence of acetone in air tends to reduce the energy required to obtain a breakdown. Next, the ignition of acetone-air mixtures in the equivalence ratio range 0.9-2.4 was investigated. The probabilities of ignition were calculated in function to the laser energy. However, according to the variability of energy absorption by the plasma, we preferred to present the result according to the energy absorbed by the plasma. The minimum ignition energies were also provided. The minimum ignition energy was obtained for an equivalence ratio of 1.6 and an absorbed energy of 1.15 mJ. Finally the characteristics of the plasma (absorption coefficient and kernel temperature) were calculated for the experiments corresponding to minimum ignition energies. |
| Databáze: | OpenAIRE |
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