Journal ArticleDOI
Influence on fluorocarbons flammability limits in the mixtures of H2-N2O and CH4-N2O
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In this paper, the flammability limits for combustible gas (methane, hydrogen)-nitrous oxide-fluorinated hydrocarbon (trifluoromethane CHF3, pentafluoroethane C2HF5, perfluorobutane C4F10) mixtures are experimentally determined.Abstract:
The flammability limits for combustible gas (methane, hydrogen)-nitrous oxide-fluorinated hydrocarbon (trifluoromethane CHF3, pentafluoroethane C2HF5, perfluorobutane C4F10) mixtures are experimentally determined The upper and lower flammability limits turned out to be, respectively, significantly higher and lower as compared to those characteristic of the combustion in air The compositions of the mixtures at the peaks of the flammability curves are characterized by lower values of the fuel equivalence ratio φ (in most cases, φ 05) It was established that the inhibiting concentrations of fluorinated hydrocarbons for the combustion of methane and hydrogen in nitrous oxide are similar, in contrast to the combustion in oxygen- nitrogen oxidative media A qualitative interpretation of the results is givenread more
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Propagation indices of methane-nitrous oxide flames in the presence of inert additives
TL;DR: In this article, the propagation indices of CH4-N2O flames in the presence of inert gases (He, Ar, N2 and CO2) were determined by experiments performed in a spherical vessel with central ignition.
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Deflagration Characteristics of N2-Diluted CH4-N2O Mixtures in the Course of the Incipient Stage of Flame Propagation
TL;DR: In this paper, experimental measurements in a spherical combustion bomb were performed in order to investigate the flame propagation in N2-diluted CH4-N2O mixtures with stoichiometric equivalence ratio, at several initial pressures (0.5-1.75 bar) and ambient initial temperatures.
Journal ArticleDOI
Nitrous Oxide: Oxidizer and Promoter of Hydrogen and Hydrocarbon Combustion
TL;DR: In this paper , the gas-phase oxidations of hydrogen and other fuels (ammonia, hydrazine, hydrocarbons) with nitrous oxide, running as self-ignitions, deflagrations, or detonations are examined.
References
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ReportDOI
Flammability characteristics of combustible gases and vapors
TL;DR: In this article, a summary of the available limit of flammability, autoignition, and burning rate data for more than 200 combustible gases and vapors in air and other oxidants, as well as empirical rules and graphs that can be used to predict similar data for thousands of other combustibles under a variety of environmental conditions are given.
Journal ArticleDOI
Proceedings of the international symposium - innovation for the management of echinococcosis besançon, march 27-29, 2014.
Journal ArticleDOI
Burning velocities and flammability limits of gaseous mixtures at elevated temperatures and pressures
Yu. N. Shebeko,S. G. Tsarichenko,A. Ya. Korol'chenko,A. V. Trunev,V.Yu. Navzenya,S. N. Papkov,A. A. Zaitzev +6 more
TL;DR: In this paper, burning velocities and flammability limits of gaseous mixtures of combustible gas (hydrogen and methane), oxidizer (oxygen and air), and diluent (nitrogen, argon, helium, carbon dioxide, steam, water aerosol formed by evaporation of superheated water) have been measured at elevated temperatures ( up to 250°C) and pressures (up to 4.0 MPa).
Journal ArticleDOI
Spherical expanding flames in H2–N2O–Ar mixtures: flame speed measurements and kinetic modeling
Rémy Mével,Rémy Mével,Fabien Lafosse,Nabiha Chaumeix,G. Dupré,G. Dupré,Claude-Etienne Paillard,Claude-Etienne Paillard +7 more
TL;DR: In this paper, the flame speed of a hydrogen-nitrous oxide mixture diluted in Ar (60% mol) was measured in a spherical bomb as a function of equivalence ratio.
Journal ArticleDOI
Reaction mechanism and rate constants in lean hydrogen-nitrous oxide flames
TL;DR: In this paper, the concentrations of all stable and unstable species were measured in the reaction zone of a lean nitrous oxidehydrogen flame (68.6% N2O and 31.4% H2) burning at 40 Torr.
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