Uniformidade de distribuição volumétrica de pontas de pulverização de jato plano duplo com indução de ar.

Abstract

The volumetric distribution pattern is an important parameter for the spray nozzles selection for each pesticide application. Thus, the objective of this study was to evaluate the volumetric distribution of air induction twin flat spray nozzles, with different nominal flows, under different work pressures and heights on the test table (patternator). It was evaluated the deposition pattern of each nozzles individually, in a test table, and then the coefficient of variation of the nozzle distribution influenced by the relationship between nozzles spacing and height was simulated. The uniformity of volumetric distribution was influenced by the nominal flow, by the liquid pressure, and by the working height. The nozzles, in a general way, presented good distribution uniformity, mainly the ones of larger nominal flow. The accomplished simulations allowed the selection of the best operational conditions for each nozzle.