- Author
-
Saito, N.
- Title
- Flammability Limit and Adiabatic Flame Temperature of Fuel/Air/Inert Gas Mixtures.
- Journal
-
Report of Fire Research Institute of Japan,
No. 78,
15-21,
September 1994
- Keywords
-
gas mixtures
|
inert gases
|
fuels
|
air
|
flammability limits
|
flame temperature
- Abstract
- [ABSTRACT IN ENGLISH] An estimation method on a flammable region of fuel/air/inert gas mixture is proposed using a thermal model. The method is based on a hypothesis that the flammable region of the mixture is in composition ranges where adiabatic flame temperatures are equal to or higher than the flame temperature at upper or lower limit of flammability in rich or lean mixture, respectively. To verify the availability, the method was applied to combustible mixtures of four inorganic fuels and three organic fuels with four inert gases, and the estimated results were compared with reported data in literature. It is a good estimation for combustible mixtures of inorganic fuels, but there are some differences between estimate flammable regions and the observed data of organic fuels, especially in fuel rich side. This is because the method overestimates effect of preferential diffusion in combustible mixtures near to stoichiometry and does not include influence of difference of burnt gas compositions between real combustion and calculation.