The lean flammability limits in air of methane,hydrogen and carbon monoxide at low temperatures

The lean flammability limits in air for methane, hydrogen and carbon monoxide at atmospheric pressure were established under isothermal initial conditions at temperatures extending down to ?130°C. Simple guidelines are then suggested for predicting these limits on the basis of the calculated flame temperature of the limiting mixtures. Estimates were also made of the extent of changes in these limits due to heat transfer over a wide mixture temperature range.