Desempenho de pontas de pulverização quanto a indução de ar nas gotas

• Autor(a) principal: Faggion, Francisco [UNESP]
• Data de Publicação: 2010
• Outros Autores: Antuniassi, Ulisses Rocha [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• DOI: 10.17224/EnergAgric.2010v25n4p72-82
• Texto Completo: http://dx.doi.org/10.17224/EnergAgric.2010v25n4p72-82; http://hdl.handle.net/11449/137387
• topic: Application technology; Pressure; Air inclusion; Tecnologia de aplicação; Pressão; Inclusão de ar

An efficient application of agrochemicals depends, among other factors, on the type of nozzles used. Several types of nozzles are available on the market. The air induction nozzles generate droplets with air in their interior, which alters both the behaviour and the spectrum of the droplets. The objective of this research was to assess the performance of air induction nozzles regarding the amount of air induced, in function of the nozzle output and the work pressure. A funnel was built in order to capture the droplets with air; those droplets were captured in order to find out the volume of the mixture and the weight of the mass of the liquid. The following agricultural air induction nozzles were evaluated: AI 110015, AI 11002, AI 11003 and AI 11004. The solution spread was composed of water with 0.1% v/v of a nonionic surfactant based on nonylphenoxy polyethyoxyethanol, sprayed at working pressures of 200, 250, 300, 350, and 400 kPa. The air induction nozzles induced an average of 21,51% of air on the droplets. The variation of the working pressure had influence on the percentage of air included and the nozzles where similar to each other regarding the induction of air maintaining constant the working pressure.