Twin-fluid spray nozzle that employs air along with liquid for obtaining spray.

Advantages of air-assist atomizer


• Simple design.


• Produces nearly homogeneous spray.


• Fine droplets can be produced at low liquid injection pressures.


• Ensures thorough mixing of air and droplets.


• Very low soot production during combustion; reduction in flame radiation and exhaust smoke.

• Sauter Mean Diameter (SMD)
  
  



• Gas-to-liquid ratio (GLR)
  
  


Importance of SMD: Consumption of reactant mass is a volumetric process and evaporation is a surface phenomenon.