Arrhenius Equation

Related terms

Auto-Ignition Temperature

The minimum temperature at which a material ignites spontaneously without a pilot flame or spark. Relevant to the assessment of ignition scenarios...

Carboxyhaemoglobin (COHb)

The compound formed when carbon monoxide binds to haemoglobin at the oxygen-binding site, with an affinity 200-250 times greater than oxygen. Produces...

Conductive Heat Transfer

Transfer of thermal energy through a solid material by molecular vibration. Rate depends on thermal conductivity, temperature gradient, cross-sectional area, and path...

Convective Heat Transfer

Transfer of heat by bulk movement of a fluid (gas or liquid). In compartment fires, the buoyant hot gas plume carries most...

Fire Tetrahedron

The model of sustained combustion requiring four concurrent elements: fuel, oxidiser, heat, and an uninhibited radical chain reaction. Replacing the older fire...

Flaming Combustion

Gas-phase oxidation of volatile pyrolysis products above the fuel surface, producing a visible flame at 800-1200°C. Produces less CO than smouldering under...

Flash Point

Lowest temperature at which a liquid gives off enough vapour to form an ignitable mixture in air, but the vapour does not...

Glowing (Smouldering) Combustion

Surface-phase oxidation of solid char without a gas-phase flame, typically at 400-700°C. Produces large amounts of CO and can persist at lower...

Radiative Heat Transfer

Transfer of heat by electromagnetic waves (infrared). Scales as the fourth power of absolute temperature; at near-flashover temperatures it can simultaneously ignite...

Explained in

• Fire Chemistry: Combustion, Oxidation and the Fire TetrahedronMathematical expression relating reaction rate to temperature: k = A × exp(-Ea/RT). The exponential dependence explains the self-accelerating nature of combust...