Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence

The dependence of the lower flammability limit on the initial temperature was studied for a total set of 26 compounds. It was found that the adiabatic flame temperature at the lower flammability limit cannot always be assumed to be constant. A method that can be used to estimate the LFLs at different initial temperatures was developed; this method had an average absolute relative error of 1.85% and a squared correlation coefficient of 0.9987.