Flammability of mixed gases. Investigations report. [Hydrogen-methane-carbon monoxide-air]
About 100 tests of flammability were carried out with H2, CH4, and CO in mixtures with air using the Federal Bureau of Mines 12-ft-diameter spherical pressure vessel as an explosion test chamber. The LeChatelier approximation gave slightly conservative estimates of the limits of downward flame propagation (onset of significant pressure rise) using the following measured values for the individual gases, in percent: H2, 8.5; CH4, 5.25; CO, 13.0. No justification could be offered for using the LeChatelier law for upward flame propagation limits and indeed reported data suggest that calculated values would not be conservative. The observed upward limit for methane-air mixtures (4.85 pct) was less than the widely accepted lean limit for this fuel; those for lean hydrogen-air mixtures and carbon monoxide-air mixtures did not differ from the lowest accepted values. Diffusional effects on the propagation of single, binary, and ternary fuel mixtures are discussed.
- Research Organization:
- Federal Highway Administration, Washington, DC (USA)
- OSTI ID:
- 6780596
- Report Number(s):
- PB-83-129510
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of gravity on laminar premixed gas combustion. I. Flammability limits and burning velocities
The effect of time exposure of ethylene-air mixtures to elevated temperatures on their flammability limits
Related Subjects
034000 -- Natural Gas-- Combustion
08 HYDROGEN
080800 -- Hydrogen-- Properties & Composition
090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
AIR
ALKANES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMBUSTION PROPERTIES
CONTAINERS
DISPERSIONS
ELEMENTS
FLAMMABILITY
FLUIDS
FUELS
GASES
HYDROCARBONS
HYDROGEN
METHANE
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRESSURE VESSELS