Thermal Autoignition Temperatures for Hydrogen-Air and Methane-Air Mixtures

Abstract

The autoignition temperature and ignition delay times for hydrogen-air mix tures and methane-air mixtures as a function of concentration were measured in the Bureau of Mines 1.2-L ignitability furnace. The data shows that the minimum autoignition temperature (MAIT) values obtained for hydrogen-air and methane-air mixtures are in excellent agreement with previously reported AIT values of other researchers. There is also good agreement in the gas con centrations at which the minimum AITs occurred.