Spray Nozzles 27
Spray Nozzles 27 : Spray Characteristics 6: Spray Impact: Impact of a spray onto the target surface is expressed as the force/area, N/m2 or lbs/in2. This value depends on the spray pattern distribution and the spray angle. Generally solid stream nozzles or narrow spray angle flat fan nozzles are used for applications in which high impact is desired, such as cleaning. When a nozzle is used for cleaning, the impact or pressure is called impingement. As with all spray patterns, the unit impact decreases as the distance from the nozzle increases, thereby increasing the impact area size. The spray impact,, depends on the volumetric flowrate Q and pressure drop according to the equation below. The nozzle type and distance between the nozzle and surface affect the constant C
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