Critical and transition conditions of gaseous explosion |
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| Institution: | 1. Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic;2. Institute of Chemistry, NAWI Graz, University of Graz, Heinrichstrasse 28/III, 8010, Graz, Austria;3. ARENA Arbeitsgemeinschaft für Ressourcenschonende & Nachhaltige Technologien, Inffeldgasse 21b, 8010, Graz, Austria;4. The Czech Academy of Sciences, Biology Centre, v.v.i., Branisovska 31, 370 05, Ceske Budejovice, Czech Republic;5. University of South Bohemia, Faculty of Science, Branisovska 31, 370 05, Ceske Budejovice, Czech Republic;6. The Czech Academy of Sciences, Institute of Scientific Instruments, v.v.i., Kralovopolska 147, 612 64, Brno, Czech Republic;1. Department of Criminology, Law and Society and Department of Sociology, University of California, Irvine, United States;2. School of Social Sciences, Monash University, Victoria, Australia;1. Electrophysiology Department, Hospital Militar Central, Bogotá, Colombia;2. Fundarritmia-Fundación Cardiovascular, Bogotá, Colombia |
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| Abstract: | The critical and transition conditions of a gaseous explosion at constant pressure and varying pressure is investigated. The study covered the solutions of the problem in pressure-time plane, temperature-time plane, as well as pressure-temperature plane. The explosion characteristics of combustible gases using the definition of criticality as an inflection point in critical trajectory. as well as other definitions of criticality are presented. The analytical study showed that the critical parameters for constant pressure explosion are lower than those for constant volumes where θ1tr is lowered from 0.5 to 0.29 and θatr is also lowered from 0.25 to 0.17. The sensitivity of the critical pressure to the ambient temperature and the boundary between ignition and non-ignition regions are also offered. It was also found that the critical parameters in the temperature–pressure plane were different from those obtained in the temperature-time plane or the pressure–time plane. |
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