Influence on fluorocarbons flammability limits in the mixtures of H2-N2O and CH4-N2O

Autor: A. V. Zuban, V. V. Azatyan, V. Yu. Navtsenya, A. Yu. Shebeko, Yu. N. Shebeko
Rok vydání: 2014
Předmět:
Zdroj: Russian Journal of Physical Chemistry B. 8:65-70
ISSN: 1990-7923
1990-7931
DOI: 10.1134/s1990793114010072
Popis: 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 0.5). 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 given.
Databáze: OpenAIRE