How do mist blowers atomize spray?

How do mist blowers atomize spray?

• A. Airblast shearing effect.
• B. Hydraulic nozzle breakup.
• C. Thermal vaporization.
• D. Centrifugal atomization.

Answer: (A)

Mist blowers atomize spray through a high-velocity airstream that flows across the liquid as it exits the nozzle. The fast air shears the liquid, breaking it into tiny droplets and carrying them as a fine mist. This airblast or shear mechanism is what creates the spray cloud, and the droplet size is influenced by air speed, nozzle design, and the liquid’s properties like viscosity and surface tension. Other mechanisms—breaking up the liquid inside the nozzle by hydraulics, heating to vapor, or spinning to fling droplets outward—don’t describe how mist blowers generate their spray.

Mist blowers atomize spray through a high-velocity airstream that flows across the liquid as it exits the nozzle. The fast air shears the liquid, breaking it into tiny droplets and carrying them as a fine mist. This airblast or shear mechanism is what creates the spray cloud, and the droplet size is influenced by air speed, nozzle design, and the liquid’s properties like viscosity and surface tension. Other mechanisms—breaking up the liquid inside the nozzle by hydraulics, heating to vapor, or spinning to fling droplets outward—don’t describe how mist blowers generate their spray.