Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations

Detalhes bibliográficos
Autor(a) principal: Silva, Patrícia Ferreira da
Data de Publicação: 2016
Outros Autores: Matos, Rigoberto Moreira de, Dantas Neto, José, Gomes, Roberta de Cássia Barros, Lima, Vera Lúcia Antunes de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Semina. Ciências Agrárias (Online)
DOI: 10.5433/1679-0359.2016v37n2p639
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20923
Resumo: The aim of the present study was to evaluate hydraulic characteristics such as manufacturing and flow variation coefficient, characteristic equation of self-compensating emitters and the variation between nominal flow and that obtained by the emitter equation using waters of different salt concentrations. The research was conducted in the greenhouse of the Academic Unit of the Agricultural Engineering, Federal University of Campina Grande-PB. Treatments consisted of five salinity levels in the irrigation water (ECwi) (0.6; 1.5; 2.5; 3.5 and 4.5 dS m-1 at 25 ° C) and four working pressures (60, 100, 140, and 160 kPa), with three replicates. The flow variations of emitters were considered small over time, being within recommendation of ± 7% of the nominal flow with “x” exponent values between 0.02 and 0.09, as recommended by the manufacturer, which was classified as self-compensating. The manufacturing and flow variation coefficients were considered excellent in all evaluations and the operating time did not influence the hydraulic performance of emitters. At pressure of 60 kPa and electric conductivity of 0.6 dS m-1, flow rates near values provided by the manufacturer and more economically viable to the farmer were obtained.
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spelling Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrationsCaracterização da performance hidráulica de emissor autocompensante com água de diferentes concentrações salinasNominal flowManufacturing variation coefficientSalinityCharacteristic equation.Vazão nominalCoeficiente de variação de fabricaçãoSalinidadeEquação característica.The aim of the present study was to evaluate hydraulic characteristics such as manufacturing and flow variation coefficient, characteristic equation of self-compensating emitters and the variation between nominal flow and that obtained by the emitter equation using waters of different salt concentrations. The research was conducted in the greenhouse of the Academic Unit of the Agricultural Engineering, Federal University of Campina Grande-PB. Treatments consisted of five salinity levels in the irrigation water (ECwi) (0.6; 1.5; 2.5; 3.5 and 4.5 dS m-1 at 25 ° C) and four working pressures (60, 100, 140, and 160 kPa), with three replicates. The flow variations of emitters were considered small over time, being within recommendation of ± 7% of the nominal flow with “x” exponent values between 0.02 and 0.09, as recommended by the manufacturer, which was classified as self-compensating. The manufacturing and flow variation coefficients were considered excellent in all evaluations and the operating time did not influence the hydraulic performance of emitters. At pressure of 60 kPa and electric conductivity of 0.6 dS m-1, flow rates near values provided by the manufacturer and more economically viable to the farmer were obtained.Objetivou-se, com o presente estudo, avaliar as características hidráulicas, como coeficiente de variação de fabricação e vazão, equação característica do emissor autocompensante e a variação entre a vazão nominal e a obtida pela equação do emissor utilizando águas de diferentes concentrações salinas. A pesquisa foi conduzida na casa de vegetação da Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande-PB. Os tratamentos foram compostos por cinco níveis de salinidade da água de irrigação (CEai) (0,6; 1,5; 2,5; 3,5 e 4,5 dS m-1 a 25 °C) e quatro pressões de serviço (60, 100, 140, e 160 kPa), com três repetições. As variações de vazão dos emissores foram consideradas pequenas ao longo do tempo, de modo que estavam dentro da recomendação de ± 7% da vazão nominal, com valores de expoente “x” entre 0,02 e 0,09, segundo recomendação do fabricante, que os classificou como autocompensantes . Os Coeficientes de variação de fabricação e de vazão foram considerados excelentes em todas as avaliações e o tempo de funcionamento não influenciou no desempenho hidráulico dos emissores. Na pressão de 60 kPa associada à condutividade elétrica da água de 0,6 dS m-1, obtiveram-se vazões dos emissores mais próximas da declarada pelo fabricante e a mais economicamente viáveis ao produtor.UEL2016-04-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Centificaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2092310.5433/1679-0359.2016v37n2p639Semina: Ciências Agrárias; Vol. 37 No. 2 (2016); 639-650Semina: Ciências Agrárias; v. 37 n. 2 (2016); 639-6501679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20923/18584http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSilva, Patrícia Ferreira daMatos, Rigoberto Moreira deDantas Neto, JoséGomes, Roberta de Cássia BarrosLima, Vera Lúcia Antunes de2022-12-01T16:05:26Zoai:ojs.pkp.sfu.ca:article/20923Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-12-01T16:05:26Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
Caracterização da performance hidráulica de emissor autocompensante com água de diferentes concentrações salinas
title Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
spellingShingle Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
Silva, Patrícia Ferreira da
Nominal flow
Manufacturing variation coefficient
Salinity
Characteristic equation.
Vazão nominal
Coeficiente de variação de fabricação
Salinidade
Equação característica.
Silva, Patrícia Ferreira da
Nominal flow
Manufacturing variation coefficient
Salinity
Characteristic equation.
Vazão nominal
Coeficiente de variação de fabricação
Salinidade
Equação característica.
title_short Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
title_full Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
title_fullStr Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
title_full_unstemmed Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
title_sort Characterization of the hydraulic performance of self-compensating emitters with water of different salt concentrations
author Silva, Patrícia Ferreira da
author_facet Silva, Patrícia Ferreira da
Silva, Patrícia Ferreira da
Matos, Rigoberto Moreira de
Dantas Neto, José
Gomes, Roberta de Cássia Barros
Lima, Vera Lúcia Antunes de
Matos, Rigoberto Moreira de
Dantas Neto, José
Gomes, Roberta de Cássia Barros
Lima, Vera Lúcia Antunes de
author_role author
author2 Matos, Rigoberto Moreira de
Dantas Neto, José
Gomes, Roberta de Cássia Barros
Lima, Vera Lúcia Antunes de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva, Patrícia Ferreira da
Matos, Rigoberto Moreira de
Dantas Neto, José
Gomes, Roberta de Cássia Barros
Lima, Vera Lúcia Antunes de
dc.subject.por.fl_str_mv Nominal flow
Manufacturing variation coefficient
Salinity
Characteristic equation.
Vazão nominal
Coeficiente de variação de fabricação
Salinidade
Equação característica.
topic Nominal flow
Manufacturing variation coefficient
Salinity
Characteristic equation.
Vazão nominal
Coeficiente de variação de fabricação
Salinidade
Equação característica.
description The aim of the present study was to evaluate hydraulic characteristics such as manufacturing and flow variation coefficient, characteristic equation of self-compensating emitters and the variation between nominal flow and that obtained by the emitter equation using waters of different salt concentrations. The research was conducted in the greenhouse of the Academic Unit of the Agricultural Engineering, Federal University of Campina Grande-PB. Treatments consisted of five salinity levels in the irrigation water (ECwi) (0.6; 1.5; 2.5; 3.5 and 4.5 dS m-1 at 25 ° C) and four working pressures (60, 100, 140, and 160 kPa), with three replicates. The flow variations of emitters were considered small over time, being within recommendation of ± 7% of the nominal flow with “x” exponent values between 0.02 and 0.09, as recommended by the manufacturer, which was classified as self-compensating. The manufacturing and flow variation coefficients were considered excellent in all evaluations and the operating time did not influence the hydraulic performance of emitters. At pressure of 60 kPa and electric conductivity of 0.6 dS m-1, flow rates near values provided by the manufacturer and more economically viable to the farmer were obtained.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-26
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa Centifica
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20923
10.5433/1679-0359.2016v37n2p639
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20923
identifier_str_mv 10.5433/1679-0359.2016v37n2p639
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20923/18584
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 37 No. 2 (2016); 639-650
Semina: Ciências Agrárias; v. 37 n. 2 (2016); 639-650
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
_version_ 1822182751103614976
dc.identifier.doi.none.fl_str_mv 10.5433/1679-0359.2016v37n2p639

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