Module 5: Premixed Flame
  Lecture 26: Flammability Limits
 


Ignition

Energy generated in flame = Ensible enthalpy Mass

Substituting quenching diameter

Substituting flame thickness

(Figure 26.3)
 

Fuel-Air

MIE (mJ)

Dependence on pressure

Methane-air

0.47

Ethane-air

0.4

 

Butane-air

0.34

 

Acetylene-air

0.03

 

CO-air

0.05

 

Hydrogen-air

0.02