Distribuição volumétrica de pontas 11002 com e sem indução de ar.

Abstract

This study evaluated the characteristics of spray distribution and uniformity by flat fan nozzles with and without air induction. Twenty units of flat fan 11002 nozzles with and without air induction were tested in patternator table. Each one of the units was tested separately, at the 0.30, 0.40 and 0.50 m above the patternator table and submitted to pressures of 300 and 500 kPa. The means of the colleted spray volume distribution of each nozzle types was evaluated and entered in a PC program. Based on the deposition patterns, distribution uniformity for nozzles spaced at 0.30, 0.40, 0.50 and 0.60 m was simulated in PC Program. The distribution uniformity was estimated by the Coefficient of Variation of the deposition simulated for 8 m boom. The PC Program simulated the distribution pattern of 8 m boom and calculated the Coefficient of Variation (CV) corresponding to each configuration. The results pointed out differents deposition for each nozzle type and the nozzle with air induction resulting in lower deposition area. That behavior was observed in all the bar heights and in the two pressures, could be inferred that behavior can be characteristic of the tips with air induction.