Design of microirrigation systems in sloping lands using linear programming
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/66393 |
Resumo: | When the area to be irrigated has a high slope gradient in the manifold line direction, an option is to use a tapered pipeline to economize on pipe costs and to keep the pressure head variations within desired limits. The purpose of this paper is to develop a linear programming model to design a microirrigation system with tapered manifold lines in the downhill condition, minimizing the equivalent annual cost of the hydraulic network and the energy annual cost, and assuring that the maximum variation in the pressure head previously established will be observed. The input data are: irrigation system lay-out, cost of all hydraulic network components and energy cost. The output are: equivalent annual cost, pipeline diameter in each line of the system, pressure head in each node, and total operating pressure head. To illustrate its capability, the model is applied in a citrus orchard in Sao Paulo State, Brazil. The model proved to be efficient in the design of the irrigation system in terms of the emission uniformity desired. The annual pumping cost must be considered in the microirrigation system design because it yields a lower total annual cost when compared with the same alternative without that cost. |
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Design of microirrigation systems in sloping lands using linear programmingLinear programmingMicroirrigationOptimizationSlope landCostsMathematical modelsPressure effectsSlope protectionEnergy costsHydraulic networksIrrigationWhen the area to be irrigated has a high slope gradient in the manifold line direction, an option is to use a tapered pipeline to economize on pipe costs and to keep the pressure head variations within desired limits. The purpose of this paper is to develop a linear programming model to design a microirrigation system with tapered manifold lines in the downhill condition, minimizing the equivalent annual cost of the hydraulic network and the energy annual cost, and assuring that the maximum variation in the pressure head previously established will be observed. The input data are: irrigation system lay-out, cost of all hydraulic network components and energy cost. The output are: equivalent annual cost, pipeline diameter in each line of the system, pressure head in each node, and total operating pressure head. To illustrate its capability, the model is applied in a citrus orchard in Sao Paulo State, Brazil. The model proved to be efficient in the design of the irrigation system in terms of the emission uniformity desired. The annual pumping cost must be considered in the microirrigation system design because it yields a lower total annual cost when compared with the same alternative without that cost.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FCA - Botucatu - UNESP/FAPESP, Botucatu, SPDept. of Land, Air/Water Resources University of California, Davis, CA 95616FCA - Botucatu - UNESP/FAPESP, Botucatu, SPUniversidade Estadual Paulista (Unesp)University of CaliforniaSaad, João Carlos Cury [UNESP]Mariño, Miguel A.2014-05-27T11:20:12Z2014-05-27T11:20:12Z2000-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject3325-33392000 ASAE Annual Intenational Meeting, Technical Papers: Engineering Solutions for a New Century, v. 2, p. 3325-3339.http://hdl.handle.net/11449/663932-s2.0-2342520169Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng2000 ASAE Annual Intenational Meeting, Technical Papers: Engineering Solutions for a New Centuryinfo:eu-repo/semantics/openAccess2024-04-30T14:02:51Zoai:repositorio.unesp.br:11449/66393Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:02:57.634259Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Design of microirrigation systems in sloping lands using linear programming |
title |
Design of microirrigation systems in sloping lands using linear programming |
spellingShingle |
Design of microirrigation systems in sloping lands using linear programming Saad, João Carlos Cury [UNESP] Linear programming Microirrigation Optimization Slope land Costs Mathematical models Pressure effects Slope protection Energy costs Hydraulic networks Irrigation |
title_short |
Design of microirrigation systems in sloping lands using linear programming |
title_full |
Design of microirrigation systems in sloping lands using linear programming |
title_fullStr |
Design of microirrigation systems in sloping lands using linear programming |
title_full_unstemmed |
Design of microirrigation systems in sloping lands using linear programming |
title_sort |
Design of microirrigation systems in sloping lands using linear programming |
author |
Saad, João Carlos Cury [UNESP] |
author_facet |
Saad, João Carlos Cury [UNESP] Mariño, Miguel A. |
author_role |
author |
author2 |
Mariño, Miguel A. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University of California |
dc.contributor.author.fl_str_mv |
Saad, João Carlos Cury [UNESP] Mariño, Miguel A. |
dc.subject.por.fl_str_mv |
Linear programming Microirrigation Optimization Slope land Costs Mathematical models Pressure effects Slope protection Energy costs Hydraulic networks Irrigation |
topic |
Linear programming Microirrigation Optimization Slope land Costs Mathematical models Pressure effects Slope protection Energy costs Hydraulic networks Irrigation |
description |
When the area to be irrigated has a high slope gradient in the manifold line direction, an option is to use a tapered pipeline to economize on pipe costs and to keep the pressure head variations within desired limits. The purpose of this paper is to develop a linear programming model to design a microirrigation system with tapered manifold lines in the downhill condition, minimizing the equivalent annual cost of the hydraulic network and the energy annual cost, and assuring that the maximum variation in the pressure head previously established will be observed. The input data are: irrigation system lay-out, cost of all hydraulic network components and energy cost. The output are: equivalent annual cost, pipeline diameter in each line of the system, pressure head in each node, and total operating pressure head. To illustrate its capability, the model is applied in a citrus orchard in Sao Paulo State, Brazil. The model proved to be efficient in the design of the irrigation system in terms of the emission uniformity desired. The annual pumping cost must be considered in the microirrigation system design because it yields a lower total annual cost when compared with the same alternative without that cost. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-12-01 2014-05-27T11:20:12Z 2014-05-27T11:20:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
2000 ASAE Annual Intenational Meeting, Technical Papers: Engineering Solutions for a New Century, v. 2, p. 3325-3339. http://hdl.handle.net/11449/66393 2-s2.0-2342520169 |
identifier_str_mv |
2000 ASAE Annual Intenational Meeting, Technical Papers: Engineering Solutions for a New Century, v. 2, p. 3325-3339. 2-s2.0-2342520169 |
url |
http://hdl.handle.net/11449/66393 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2000 ASAE Annual Intenational Meeting, Technical Papers: Engineering Solutions for a New Century |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3325-3339 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128309093990400 |