Atomization occurs when a liquid jet is broken down into more or less fine droplets. The ideal spray consists of drops of the same diameter. Atomization methods can be divided into hydraulic atomization and pneumatic atomization.
A media passing through a nozzleincreases in speed as the cross section diameter becomes smaller. Potential energy becomes kinetic energy (velocity). After the medium passes through the nozzles orifice, it develops an aerodynamic wave pattern, which later leads to droplets in different sizes.
This atomization method achieves the highest degree of atomization: the finest droplets. Under certain conditions, the droplets can completely evaporate. Pneumatic nozzles can be used, for example, to atomize more viscous media than water. A distinction is made between internal and external mixing pneumatic nozzles.