This work aimed to evaluate spray distribution uniformity for nozzle TT 11002 using varying nozzle spacing, spray height and pressure, as well as the possibility of reducing spray volume by increasing nozzle spacing. Nozzle deposition pattern was evaluated for 30, 40 and 50 cm spray heights, at pressures of 100, 200, 300 and 400 kPa, on a pattern table, using a "V" channel and 5 cm spacing. Ten nozzles were individually placed at the center of the pattern table followed by collection and measurement of the volume sprayed for 60 seconds and determination of the distribution pattern. Based on the deposition patterns, distribution uniformity for nozzles spaced at 40, 50, 80, 100, 120 and 150 cm was simulated using a computer program. Nozzle TT 11002 showed good distribution uniformity, with coefficient of variation (CV) below 7 at 100 kPa pressure for nozzles spaced up to 50 cm and at 40 and 50 cm spray heights. At pressures above 200 kPa, good distribution uniformity was verified at up to 50, 100 and 120 cm spacing at 30, 40 and 50 cm spray heights, respectively. Nozzle TT 11002 allows spray volume reduction by increasing nozzle spacing, with good distribution uniformity and increased operational capacity of the spraying equipment.
distribution uniformity; application technology; application volume; nozzle spacing; coefficient of variation
