Spray nozzles designed for evaporative cooling

Vortec has introduced spray nozzles for ultrafine droplet-sized sprays suitable for evaporative cooling. They atomize the liquid stream by high-velocity compressed air to create 20- to 200-micron spray droplets.

Droplet size and production are not dependent on liquid pressure, and the spray nozzles can produce finer drops than hydraulic nozzles, says the company. This efficient use of the liquid accelerates air-liquid interaction to give more effective cooling, while the smaller droplets expose more surface area, increasing evaporation rate. Consistent and effective cooling of surfaces reduces heat distortion of parts.

Three types of spray nozzles are available. The fogging nozzle produces a directed spray with 20- to 60-micron droplets, and the atomizing nozzle has a directed spray of 60- to 200-micron droplets. Both have flow rates of 0 to 30 GPM with liquid viscosities up to 1,100 cPs. The humidifying nozzle features a wide spray with droplet sizes of 20 to 200 microns and a flow rate of 0 to 15 GPM, with liquid viscosity up to 100 cPs.