Droplet spectrum of standard flat fan and hollow cone spray nozzles

Detalhes bibliográficos
Autor(a) principal: Cunha, João Paulo Arantes Rodrigues da
Data de Publicação: 2004
Outros Autores: Teixeira, Mauri Martins, Vieira, Rogério Faria, Fernandes, Haroldo Carlos, Coury, José Renato
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6865
Resumo: The appropriate selection and use of spray nozzles are essential for the correct pesticides application. The objective of this study was to evaluate the droplet spectrum of hydraulic standard flat fan and hollow cone spray nozzles, with different nominal flows. In laboratory, droplet spectrum, using a real time laser particle size analyzer, was measured with the operating pressure ranging from 200 to 400 kPa, for flat fan, and from 400 to 600 kPa, for hollow cone. A theoretical study was also carried out on the horizontal distance traveled by droplets of known size. The hollow cone nozzles presented smaller droplets in relation to the flat fan, and provided larger droplets densities deposited on surface objective. All nozzles presented great density of deposited droplets, superior to 110 droplets cm-2. However, the drift potential was great, mainly regarding the hollow cone nozzles, requesting, therefore, strategies for its reduction. It is possible to estimate the horizontal distance traveled by droplets of known size.
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spelling Droplet spectrum of standard flat fan and hollow cone spray nozzlesEspectro de gotas de bicos de pulverização hidráulicos de jato plano e de jato cônico vaziodroplet size; drift; work pressuretamanho de gotas; deriva; pressão de trabalhoThe appropriate selection and use of spray nozzles are essential for the correct pesticides application. The objective of this study was to evaluate the droplet spectrum of hydraulic standard flat fan and hollow cone spray nozzles, with different nominal flows. In laboratory, droplet spectrum, using a real time laser particle size analyzer, was measured with the operating pressure ranging from 200 to 400 kPa, for flat fan, and from 400 to 600 kPa, for hollow cone. A theoretical study was also carried out on the horizontal distance traveled by droplets of known size. The hollow cone nozzles presented smaller droplets in relation to the flat fan, and provided larger droplets densities deposited on surface objective. All nozzles presented great density of deposited droplets, superior to 110 droplets cm-2. However, the drift potential was great, mainly regarding the hollow cone nozzles, requesting, therefore, strategies for its reduction. It is possible to estimate the horizontal distance traveled by droplets of known size.A escolha e o uso adequado de bicos de pulverização são essenciais para a correta aplicação de agrotóxicos. Este trabalho teve como objetivo avaliar o espectro de gotas de bicos de pulverização hidráulicos de jato plano padrão e de jato cônico vazio, com diferentes vazões nominais. Em ambiente controlado, avaliou-se o espectro de gotas por meio de um analisador a laser de gotas em tempo real, nas faixas de pressão de 200 a 400 kPa para os bicos de jato plano, e de 400 a 600 kPa para os bicos de jato cônico vazio. Realizou-se também um estudo teórico sobre a distância horizontal percorrida por gotas de tamanho conhecido. Os bicos de jato cônicovazio apresentaram gotas de menor tamanho em relação aos de jato plano e, por isso, proporcionaram maiordensidade de gotas depositadas sobre a superfície-alvo. Todos os bicos apresentaram densidade de gotassuperior a 110 gotas cm-2. No entanto, o potencial de deriva foi alto, principalmente o dos bicos de jato cônico,requerendo estratégias para sua redução. É possível estimar a distância horizontal percorrida por gotas detamanho conhecido.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCunha, João Paulo Arantes Rodrigues daTeixeira, Mauri MartinsVieira, Rogério FariaFernandes, Haroldo CarlosCoury, José Renato2004-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6865Pesquisa Agropecuaria Brasileira; v.39, n.10, out. 2004; 977-985Pesquisa Agropecuária Brasileira; v.39, n.10, out. 2004; 977-9851678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6865/3921info:eu-repo/semantics/openAccess2014-08-28T19:25:22Zoai:ojs.seer.sct.embrapa.br:article/6865Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-28T19:25:22Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Droplet spectrum of standard flat fan and hollow cone spray nozzles
Espectro de gotas de bicos de pulverização hidráulicos de jato plano e de jato cônico vazio
title Droplet spectrum of standard flat fan and hollow cone spray nozzles
spellingShingle Droplet spectrum of standard flat fan and hollow cone spray nozzles
Cunha, João Paulo Arantes Rodrigues da
droplet size; drift; work pressure
tamanho de gotas; deriva; pressão de trabalho
title_short Droplet spectrum of standard flat fan and hollow cone spray nozzles
title_full Droplet spectrum of standard flat fan and hollow cone spray nozzles
title_fullStr Droplet spectrum of standard flat fan and hollow cone spray nozzles
title_full_unstemmed Droplet spectrum of standard flat fan and hollow cone spray nozzles
title_sort Droplet spectrum of standard flat fan and hollow cone spray nozzles
author Cunha, João Paulo Arantes Rodrigues da
author_facet Cunha, João Paulo Arantes Rodrigues da
Teixeira, Mauri Martins
Vieira, Rogério Faria
Fernandes, Haroldo Carlos
Coury, José Renato
author_role author
author2 Teixeira, Mauri Martins
Vieira, Rogério Faria
Fernandes, Haroldo Carlos
Coury, José Renato
author2_role author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Cunha, João Paulo Arantes Rodrigues da
Teixeira, Mauri Martins
Vieira, Rogério Faria
Fernandes, Haroldo Carlos
Coury, José Renato
dc.subject.por.fl_str_mv droplet size; drift; work pressure
tamanho de gotas; deriva; pressão de trabalho
topic droplet size; drift; work pressure
tamanho de gotas; deriva; pressão de trabalho
description The appropriate selection and use of spray nozzles are essential for the correct pesticides application. The objective of this study was to evaluate the droplet spectrum of hydraulic standard flat fan and hollow cone spray nozzles, with different nominal flows. In laboratory, droplet spectrum, using a real time laser particle size analyzer, was measured with the operating pressure ranging from 200 to 400 kPa, for flat fan, and from 400 to 600 kPa, for hollow cone. A theoretical study was also carried out on the horizontal distance traveled by droplets of known size. The hollow cone nozzles presented smaller droplets in relation to the flat fan, and provided larger droplets densities deposited on surface objective. All nozzles presented great density of deposited droplets, superior to 110 droplets cm-2. However, the drift potential was great, mainly regarding the hollow cone nozzles, requesting, therefore, strategies for its reduction. It is possible to estimate the horizontal distance traveled by droplets of known size.
publishDate 2004
dc.date.none.fl_str_mv 2004-10-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6865
url https://seer.sct.embrapa.br/index.php/pab/article/view/6865
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6865/3921
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.39, n.10, out. 2004; 977-985
Pesquisa Agropecuária Brasileira; v.39, n.10, out. 2004; 977-985
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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