The Accuracy of Distribution Uniformity Test under Different Moving Irrigation Systems

2018 ◽  
Author(s):  
Abdelmoneim Zakaria Mohamed ◽  
Troy Robert Peters ◽  
Abid Sarwar ◽  
Don McMoran
Keyword(s):  
Irrigation Systems ◽  
Uniformity Test ◽  
Distribution Uniformity

scholarly journals AVALIAÇÃO DO DESEMPENHO DE SISTEMAS DE IRRIGAÇÃO POR ASPERSÃO CONVENCIONAL FIXO E GOTEJAMENTO EM VILA RURAL

Irriga ◽  
2008 ◽  
Vol 13 (1) ◽  
pp. 47-62 ◽  
Author(s):  
Eguimar Amorim Maciel de Souza ◽  
Paula Cristina de Souza ◽  
Márcio Antônio Vilas Boas
Keyword(s):  
Water Distribution ◽  
Irrigation System ◽  
Field Tests ◽  
Irrigation Systems ◽  
Rural Village ◽  
System A ◽  
De Se ◽  
Distribution Uniformity ◽  
And Storage

AVALIAÇÃO DO DESEMPENHO DE SISTEMAS DE IRRIGAÇÃO POR ASPERSÃO CONVENCIONAL FIXO E GOTEJAMENTO EM VILA RURAL  Eguimar Amorim Maciel de Souza; Paula Cristina de Souza; Márcio Antônio Vilas BoasCentro de Ciências Exatas e Tecnológicas, Universidade do Oeste do Paraná,  Cascavel , Pr, [email protected]  1 RESUMO           O manejo racional da irrigação consiste na aplicação da quantidade necessária de água às plantas no momento correto. É recomendável após a instalação de um sistema de irrigação, proceder-se a testes de campo, com o objetivo de se verificar a adequação da irrigação recomendando, quando necessário, ajustes na operação e, principalmente, no manejo. O propósito deste trabalho foi avaliar dois sistemas de irrigação, sendo um por aspersão convencional fixo e outro por gotejamento,  implantados na Vila Rural Flor do Campo, localizada na região Noroeste do Estado do Paraná, através da determinação dos parâmetros de uniformidade e eficiência de distribuição de água.  Foram utilizadas as metodologias propostas na norma ABNT NBR ISO 7749-2, Asae (1995) e por Keller & Karmeli (1975).   Foram realizados trinta ensaios em cada sistema de irrigação. Para o sistema de irrigação por aspersão foi obtido  CUC  de 77,9%, considerado abaixo do valor mínimo aceitável de 80%, sendo que  a velocidade do vento variou de 0 a 2,4 m s-1. As eficiências de aplicação (Ea) e armazenagem (Es) obtidas neste sistema foram, respectivamente, de 77,0% e 48,8%. No sistema de irrigação por gotejamento foi obtido CUC de 93,7% considerado valor excelente. A Uniformidade de Emissão (UE) encontrada foi de 89,3% sendo considerada boa. As eficiências de aplicação (Ea) e armazenagem (Es) obtidas neste sistema foram, respectivamente, de 100% e 65,0 %. UNITERMOS: Irrigação, aspersão convencional, gotejamento,       uniformidade, eficiência,  avaliação.  SOUZA, E. A. M.; SOUZA, P.C.; VILAS BOAS, M. A. PERFORMANCE EVALUATION OF FIXED CONVENTIONAL ASPERSION AND DRIPPING IRRIGATION SYSTEMS IN  A RURAL VILLAGE  2 ABSTRACT The rational handling of the irrigation consists of the application of the necessary amount of water to the plants at the correct moment. After the installation of an irrigation system, it is recommended the field tests be carried out in order to  verify the adequacy of the recommended irrigation and , when necessary, to adjust the operation and, mainly, the handling. The aim of this work was to evaluate two irrigation  systems,  a fixed conventional aspersion system and a dripping one, installed in the l Flor do Campo, a rural village located in the Northwest of Paraná state, through the determination of the parameters of water distribution uniformity and efficiency. The methodologies used were according to the  ABNT NBR ISO 7749-2 norm, Asae (1995) and for Keller & Karmeli (1975). Thirty assays in each irrigation system were tested. In the irrigation system with  aspersion CUC of 77.9%, which is considered below the minimum acceptable value of 80%, was found  considering that the wind speed varied from   0 to  2.4 ms-1. The efficiencies of application (Ea) and storage (Es) obtained in this system were 77.0% and 48.8 %, respectively. In the dripping  irrigation system, a CUC of 93.7%, considered an excellent value,  was found. The EU was 89.3% and considered good. The efficiencies of application (Ea) and storage (Es) gotten in this system were  100% and 65. 0 %, respectively. KEY WORDS: Irrigation, conventional aspersion, dripping, uniformity, efficiency, evaluation.

scholarly journals Performance of irrigation systems located in the culture of sweet potato in Guaraciaba do Norte-CE

2020 ◽  
Vol 13 (4) ◽  
pp. 35
Author(s):  
J. B. Martins Filho ◽  
M. F. Farias
Keyword(s):  
Sweet Potato ◽  
Drip Irrigation ◽  
Potato Crop ◽  
Sweet Potatoes ◽  
Irrigation Systems ◽  
Flow Rates ◽  
Uniformity Coefficient ◽  
Application Efficiency ◽  
Distribution Uniformity

Irrigation systems may exhibit variations in performance when poorly dimensioned or depending on the time of use. In this sense, the objective of this study was to evaluate the performance of irrigation systems located by micro sprinkler and drip irrigation in the sweet potato crop in a family property in the municipality of Guaraciaba do Norte-CE. The property under study in this research has a total area of 2.5 ha. The area cultivated with sweet potatoes is 120 m2 with 50% of the area irrigated by drip irrigation and the remainder irrigated by micro sprinkler. In order to analyze the performance of the irrigation systems, the methodology proposed by Keller and Karmeli (1975) was adopted, in which the flow rates of the emitters are determined in pre-established positions. Were determined the coefficients of uniformity of Christiansen (CUC); coefficient of statistical uniformity (CUE); Hart uniformity coefficient and distribution uniformity coefficient (CUD). Irrigation systems presented uniformity coefficients higher than 90%, for all the equations applied in this work, both also presented application efficiency higher than 85%. Due to the high coefficients of uniformity found it was concluded that the irrigation systems located on the property were well sized and mounted

scholarly journals COMPARAÇÃO ENTRE METODOLOGIAS PARA DIMENSIONAMENTO DE LINHAS LATERAIS PAREADAS DE GOTEJAMENTO EM DESNÍVEL

Irriga ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 747-753
Author(s):  
Icaro Monteiro Galvão ◽  
João Jesus Guimarães ◽  
Alberto Mario Arroyo Avilez ◽  
João Carlos Cury Saad
Keyword(s):  
Drip Irrigation ◽  
Irrigation Systems ◽  
Second Best ◽  
Flow Variation ◽  
Lateral Lines ◽  
Distribution Uniformity ◽  
E Mail

COMPARAÇÃO ENTRE METODOLOGIAS PARA DIMENSIONAMENTO DE LINHAS LATERAIS PAREADAS DE GOTEJAMENTO EM DESNÍVEL     ÍCARO MONTEIRO GALVÃO1; JOÃO DE JESUS GUIMARÃES2; ALBERTO MARIO ARROYO AVILEZ3 E JOÃO CARLOS CURY SAAD4     [1] Departamento de Engenharia de Biossistemas, ESALQ/USP, Av. Pádua Dias, São Judas, CEP 13418-900, Piracicaba, SP, Brasil. e-mail: [email protected] 2 Departamento de Engenharia Rural e Socioeconomia, FCA/UNESP, Av. Universitária 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. e-mail: [email protected] 3 Departamento de Engenharia Rural e Socioeconomia, FCA/UNESP, Av. Universitária 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. e-mail: [email protected]  4 Prof. Titular, Departamento de Engenharia Rural e Socioeconomia, FCA/UNESP, Av. Universitária 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. e-mail: [email protected]     1 RESUMO   O objetivo deste trabalho foi comparar diferentes metodologias para a determinação dos trechos em aclive e em declive de linhas laterais pareadas em terreno com desnível uniforme, para um sistema de irrigação por gotejamento. Para tal utilizou-se as metodologias propostas por Keller e Bliesner (1990), Jiang e Kang (2010) e Monserrat; Barragan e Cots (2018). Calculou-se o comprimento das linhas em aclive e declive, o coeficiente de uniformidade de distribuição (CUD) e as variações de vazão e de pressão para ambas as condições topográficas. A metodologia de Keller e Bliesner (1990) foi a que melhor dimensionou as linhas pareadas, com menor diferença de desempenho entre os trechos em aclive e declive, em termos de CUD e de variação de vazão e de pressão, além de permanecer dentro do limite máximo de variação de vazão de 10%. O segundo melhor desempenho foi obtido pelo método de Monserrat; Barragan e Cots (2018). O procedimento de Jiang e Kang (2010) foi o menos adequado, tendo gerado no trecho em aclive variação de vazão de 10,9%.   Palavras-chave: gotejamento, linha lateral, comprimento, declividade.     GALVÃO, I. M.; GUIMARÃES, J. J.; AVILEZ, A. M. A.; SAAD, J. C. C. METHODOLOGIES COMPARISON FOR DESIGN OF PAIRED DRIP LATERALS ON UNIFORMLY SLOPING FIELDS     2 ABSTRACT   This work aimed to compare different methodologies for designing paired laterals of drip irrigation systems on uniformly sloping fields. For this purpose, the methodologies proposed by Keller e Bliesner (1990), Jiang e Kang (2010), and Monserrat; Barragan e Cots (2018) were evaluated. The length of uphill and downhill lateral lines, distribution uniformity (DU), flow, and pressure variations were calculated for both topographic conditions. The Keller e Bliesner (1990) methodology generated the best design for paired laterals, with the lowest DU difference between the uphill and downhill sections; also, the flow variation remained under the 10% limit. The second-best performance was obtained by the method of Monserrat; Barragan e Cots (2018). Jiang e Kang (2010)’s procedure was the least adequate, generating a 10.9% flow variation in the uphill section.   Keywords: drip irrigation, hydraulic, uniformity.

scholarly journals Chemical treatment to unclogg dripper irrigation systems due to biological problems

2008 ◽  
Vol 65 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Túlio Assunção Pires Ribeiro ◽  
José Euclides Stipp Paterniani ◽  
Christiane Coletti
Keyword(s):  
Chemical Treatment ◽  
Water Distribution ◽  
Irrigation System ◽  
Trickle Irrigation ◽  
Irrigation Systems ◽  
Before And After ◽  
Excellent Method ◽  
Distribution Uniformity ◽  
Two Sectors ◽  
Frequent Problem

Many producers use drippers for trickle irrigation systems for flower production in the field and in protected environments. A frequent problem in this type of irrigation system is the clogging of drippers, which is directly related to water quality and filtering system efficiency. The objective of this study was to conduct an experimental investigation to evaluate the efficiency of using nitric acid and sodium hypochlorite to unclogg drippers due to the use of water with high algae content. The evaluation was conducted in six, 4216 m² greenhouses, each with two sectors comprised of ten spaces or lines, totaling 12 sectors of a dripper irrigation system in a rose producing property of Holambra, State of SP, Brazil. Chemical and physical analyses and the bacteriological count in water were carried out in the three water sources that supply the irrigation system to check the factors causing the clogging. Evaluations were carried out on water distribution uniformity in all sectors before and after chemical treatment in order to evaluate efficiency. The treatment improved water distribution uniformity and a lead to a reduction in the coefficient of variation (CV) for dripper flow in all sectors. There was a good correlation between CV and the water distribution uniformity index. Therefore, this is an excellent method to be used to unclogg drippers due to biological problems.

scholarly journals EVALUATION CENTER PIVOT SYSTEMS USING NEW AND OLD SPRAYS AND PRESSURE REGULATORS

Irriga ◽  
2001 ◽  
Vol 6 (1) ◽  
pp. 42-47
Author(s):  
Antonio Evaldo Klar ◽  
Renato De Castro Santana ◽  
Charles Duroha
Keyword(s):  
Performance Characteristics ◽  
Irrigation Systems ◽  
Uniformity Coefficient ◽  
Hydraulic Conditions ◽  
Center Pivot ◽  
Distribution Uniformity ◽  
Water Depths

EVALUATION CENTER PIVOT SYSTEMS USING NEW AND OLD SPRAYS AND PRESSURE REGULATORS  Antonio Evaldo KlarRenato de Castro SantanaCharles DurohaDepartamento de Engenharia Rural – FCA/UNESP18603-970 – Botucatu/SP Fone: (0xx14)6802-7165; Fax: 6802-7194,[email protected]  1 ABSTRACT The objectives of this study were to appraise the performance characteristics for two center pivot irrigation systems (1 and 2) installed on identical areas with different hydraulic conditions: new and old pressure regulators and sprays and the wear out of the equipments. The experiment was been conducted in the Madeira Farm, Silvânia, GO.The Christiansen Uniformity Coefficient (CUC) was been used for the evaluation of the efficiency of systems. The values gotten for the CUC showed that there was an increase in 24.22% and 9.2% after changing old for the new kits and the water depths were 9.20 and 25.02% lower before changing the kits, for pivots 1 and 2, respectively. KEYWORDS: center pivot irrigation, distribution uniformity, old and new pressure regulators and sprays.  KLAR, A.E.,SANTANA, R.C., , DUROHA, C. AVALIAÇÃO DE SISTEMAS DE IRRIGAÇÃO POR PIVÔ CENTRAL USANDO DIFUSORES E REGULADORES DE PRECISÃO USADOS E NOVOS  2 RESUMO Os objetivos deste trabalho foram: 1. avaliar as características de desempenho de dois equipamentos de irrigação por pivô central (pivôs 1 e 2), com áreas idênticas, mas em condições hidráulicas diferentes, com reguladores de pressão e difusores novos e usados; 2. através de comparações, quantificar o desgaste do equipamento em condições de campo.Para a avaliação do desempenho dos sistemas, utilizou-se o coeficiente de uniformidade de Christiansen (CUC). Os ensaios foram realizados na Fazenda da Madeira, no município de Silvânia - GO. Os valores encontrados para os coeficientes de uniformidade demonstraram que após a troca dos kits de difusores e de reguladores de pressão, os CUC’s aumentaram em 24,22 % e 34,76 % e as lâminas aplicadas, com os kits usados, foram inferiores ao kits novos em 9,2 % e 25,06%, nos pivôs 1 e 2 respectivamente. UNITERMOS: irrigação por pivô central, uniformidade de distribuição, reguladores de pressão e difusores novos e usados. 

scholarly journals ANÁLISE DA UNIFORMIDADE DE APLICAÇÃO DE ÁGUA PELO ASPERSOR PLONA-RL250 EM SISTEMAS AUTOPROPELIDOS DE IRRIGAÇÃO

Irriga ◽  
2007 ◽  
Vol 12 (2) ◽  
pp. 249-262 ◽  
Author(s):  
Giuliani Do Prado ◽  
Alberto Colombo
Keyword(s):  
Water Distribution ◽  
Digital Simulation ◽  
Group Iv ◽  
Operating Conditions ◽  
Geometric Shape ◽  
Water Application ◽  
Irrigation Systems ◽  
Irrigation Uniformity ◽  
Distribution Uniformity ◽  
Application Profile

ANÁLISE DA UNIFORMIDADE DE APLICAÇÃO DE ÁGUA PELO ASPERSOR PLONA-RL250EM SISTEMAS AUTOPROPELIDOS DEIRRIGAÇÃO  Giuliani do Prado; Alberto ColomboDepartamento de Engenharia, Universidade Federal de Lavras, Lavras, MG, [email protected]  1 RESUMO Este trabalho apresenta características técnicas do aspersor PLONA-RL250 (vazão, raio de alcance e perfil radial de aplicação de água) e valores de uniformidade de aplicação de água, obtidos em simulações digitais, para o mesmo aspersor operando em sistemas autopropelidos de irrigação com diferentes combinações de ângulos de giro (de 180º a 360º) e espaçamentos de carreadores (de 50% a 100% do diâmetro molhado). Os valores de uniformidade foram apresentados em quatro grupos distintos, cada um dos quais contendo condições operacionais (bocal e pressão) que determinam a ocorrência de uma mesma forma geométrica (I, II, III ou IV) do perfil radial adimensional de aplicação de água do aspersor PLONA-RL250. Nos grupos I, II e III observou-se que espaçamentos de carreadores entre 80 e 90% do diâmetro molhado proporcionaram os maiores valores de uniformidade. Para o grupo IV, os maiores valores encontram-se entre 70 e 80% do diâmetro molhado. Em todas as formas geométricas do perfil, os melhores valores de uniformidade de aplicação de água foram obtidos com ângulos de giro do aspersor entre 210 e 240º. UNITERMOS: simulação, uniformidade de irrigação, ângulo de giro de aspersores.  PRADO, G. do; COLOMBO, A. ANALYSIS OF WATER APPLICATION UNIFORMITY FROM THE PLONA-RL 250 SPRINKLER IN TRAVELER IRRIGATION SYSTEMS  2 ABSTRACT This study presents measured performance data from an PLONA-RL250 sprinkler (discharge, radius of throw and radial water application profile) and water uniformity application values, obtained by digital simulation, from this same sprinkler when operating in traveler irrigation systems under different combinations of wetted sectors (from 180º to 360º) and towpath spacings (from 50% to 100% of the wetter diameter). Simulated water distribution uniformity values were presented in four different groups, according to the geometric shape (I, II, III or IV) assumed by the dimensionless sprinkler application curve, as determined by operating conditions (main nozzle diameter and pressure). For groups I, II, and III, it was observed that towpath spacings with values around 80 to 90% of the wetted diameter resulted on higher uniformity values. For group IV, higher uniformity values were obtained with spacings around 70 to 80% of the wetted diameter. For all geometric shapes (groups), the higher uniformity values were obtained with wetted sectors from 210 to 240o. KEYWORDS: sprinkler simulation, irrigation uniformity, sprinkler wetted sector

Homeowners’ Preferences for Smart Irrigation Systems and Features

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
pp. 5
Author(s):  
Hayk Khachatryan ◽  
Alicia Rihn ◽  
Dong Hee Suh ◽  
Michael Dukes
Keyword(s):  
Water Use ◽  
Water Policy ◽  
Resource Economics ◽  
Irrigation Systems ◽  
Policy Makers ◽  
Fact Sheet ◽  
Drought Conditions ◽  
Economics Department ◽  
Irrigation Technologies

Drought conditions make landscape irrigation and reducing water use top-of-mind for many Floridians. Encouraging wise water use is of particular importance to the smart irrigation industry and water policy makers. This 5-page fact sheet written by Hayk Khachatryan, Alicia Rihn, Dong Hee Suh, and Michael Dukes and published by the UF/IFAS Food and Resource Economics Department pinpoints key attributes and barriers affecting consumers' irrigation purchases and their adoption of smart irrigation technologies. https://edis.ifas.ufl.edu/fe1080

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