consisted of four fans each of 64 cm diameter and containing 4 nozzle heads of 25 mm of
diameter each that delivered 7 L of water per hour, so each fan delivered 28 L of water per hour. Each fan motor was 1.1 HP at 1000 rpm; air velocity was 8.5 mph at 6 m distance (115/230 V,
single three-phase motor with air volume of 13592 m3/h, and water pressure of 17.58 cm3). The fanswere placed in pairswith a distance of 6 m between each other.