Changes on emitter discharge under different water temperature and pressure
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/227040 |
Resumo: | The study was conducted at the Research Laboratory of Hydraulic and Irrigation Group in the Rural Engineering Department, Technical University of Madrid (Universidad Politecnica de Madrid), Madrid, Spain. Water temperatures of 20, 30, 40°C and system pressures often encountered in irrigation practices of 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190 and 200 kPa were applied to determine the effects of different water temperatures and pressures on emitter discharge. Non-pressure compensating in-line emitter which has turbulent flow regime with a long-path (labyrinth), emitter discharge was 4 L h-1 at system pressure of 100 kPa according to the manufacturer recommended, was used. Emitters were spaced 20 cm along the drip laterals with 16 mm diameter. Discharge equations and coefficients of variation related to temperatures of 20, 30 and 40°C were obtained as q = 0.375H0.51, q = 0.358H0.52, q = 0.346H0.53 and 2.68, 2.09, 3.65, respectively. Discharge of the emitter was affected by different system pressures and increased as potentially (R = 0993-0996). In general, the emitter discharge increased with increasing temperature. However, especially in the common system pressures of 90-120 kPa, differences of obtained emitter discharges between the different water temperatures were not significant (1%). |
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Changes on emitter discharge under different water temperature and pressureDischargeEmitterPressureTemperatureThe study was conducted at the Research Laboratory of Hydraulic and Irrigation Group in the Rural Engineering Department, Technical University of Madrid (Universidad Politecnica de Madrid), Madrid, Spain. Water temperatures of 20, 30, 40°C and system pressures often encountered in irrigation practices of 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190 and 200 kPa were applied to determine the effects of different water temperatures and pressures on emitter discharge. Non-pressure compensating in-line emitter which has turbulent flow regime with a long-path (labyrinth), emitter discharge was 4 L h-1 at system pressure of 100 kPa according to the manufacturer recommended, was used. Emitters were spaced 20 cm along the drip laterals with 16 mm diameter. Discharge equations and coefficients of variation related to temperatures of 20, 30 and 40°C were obtained as q = 0.375H0.51, q = 0.358H0.52, q = 0.346H0.53 and 2.68, 2.09, 3.65, respectively. Discharge of the emitter was affected by different system pressures and increased as potentially (R = 0993-0996). In general, the emitter discharge increased with increasing temperature. However, especially in the common system pressures of 90-120 kPa, differences of obtained emitter discharges between the different water temperatures were not significant (1%).Suleyman Demirel University Agricultural Faculty Agricultural Structure and Irrigation Department, 32260, IspartaUniversity of Estadual Paulista Júlio de Mesquita Filho Rural Engineering Department, 18603-970 Botucatu, Sao PauloTechnical University of Madrid (Universidad Politecnica de Madrid) Rural Engineering Department Hydraulic and Irrigation Group, 28040, MadridUniversity of Sao Paulo Department of Biosystem Engineering, 13418-900, Piracicaba, Sao PauloUniversity of Estadual Paulista Júlio de Mesquita Filho Rural Engineering Department, 18603-970 Botucatu, Sao PauloAgricultural Structure and Irrigation DepartmentUniversidade Estadual Paulista (UNESP)Hydraulic and Irrigation GroupUniversidade de São Paulo (USP)Senyigit, UlasCruz, Raimundo Leite [UNESP]Rodriguez-Sinobas, LeonorSouza, Wanderley de Jesus2022-04-29T06:01:24Z2022-04-29T06:01:24Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article718-720Journal of Food, Agriculture and Environment, v. 10, n. 3-4, p. 718-720, 2012.1459-02631459-0255http://hdl.handle.net/11449/2270402-s2.0-84869109980Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Food, Agriculture and Environmentinfo:eu-repo/semantics/openAccess2024-04-30T14:00:11Zoai:repositorio.unesp.br:11449/227040Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:39:27.142259Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Changes on emitter discharge under different water temperature and pressure |
title |
Changes on emitter discharge under different water temperature and pressure |
spellingShingle |
Changes on emitter discharge under different water temperature and pressure Senyigit, Ulas Discharge Emitter Pressure Temperature |
title_short |
Changes on emitter discharge under different water temperature and pressure |
title_full |
Changes on emitter discharge under different water temperature and pressure |
title_fullStr |
Changes on emitter discharge under different water temperature and pressure |
title_full_unstemmed |
Changes on emitter discharge under different water temperature and pressure |
title_sort |
Changes on emitter discharge under different water temperature and pressure |
author |
Senyigit, Ulas |
author_facet |
Senyigit, Ulas Cruz, Raimundo Leite [UNESP] Rodriguez-Sinobas, Leonor Souza, Wanderley de Jesus |
author_role |
author |
author2 |
Cruz, Raimundo Leite [UNESP] Rodriguez-Sinobas, Leonor Souza, Wanderley de Jesus |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Agricultural Structure and Irrigation Department Universidade Estadual Paulista (UNESP) Hydraulic and Irrigation Group Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Senyigit, Ulas Cruz, Raimundo Leite [UNESP] Rodriguez-Sinobas, Leonor Souza, Wanderley de Jesus |
dc.subject.por.fl_str_mv |
Discharge Emitter Pressure Temperature |
topic |
Discharge Emitter Pressure Temperature |
description |
The study was conducted at the Research Laboratory of Hydraulic and Irrigation Group in the Rural Engineering Department, Technical University of Madrid (Universidad Politecnica de Madrid), Madrid, Spain. Water temperatures of 20, 30, 40°C and system pressures often encountered in irrigation practices of 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190 and 200 kPa were applied to determine the effects of different water temperatures and pressures on emitter discharge. Non-pressure compensating in-line emitter which has turbulent flow regime with a long-path (labyrinth), emitter discharge was 4 L h-1 at system pressure of 100 kPa according to the manufacturer recommended, was used. Emitters were spaced 20 cm along the drip laterals with 16 mm diameter. Discharge equations and coefficients of variation related to temperatures of 20, 30 and 40°C were obtained as q = 0.375H0.51, q = 0.358H0.52, q = 0.346H0.53 and 2.68, 2.09, 3.65, respectively. Discharge of the emitter was affected by different system pressures and increased as potentially (R = 0993-0996). In general, the emitter discharge increased with increasing temperature. However, especially in the common system pressures of 90-120 kPa, differences of obtained emitter discharges between the different water temperatures were not significant (1%). |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2022-04-29T06:01:24Z 2022-04-29T06:01:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Journal of Food, Agriculture and Environment, v. 10, n. 3-4, p. 718-720, 2012. 1459-0263 1459-0255 http://hdl.handle.net/11449/227040 2-s2.0-84869109980 |
identifier_str_mv |
Journal of Food, Agriculture and Environment, v. 10, n. 3-4, p. 718-720, 2012. 1459-0263 1459-0255 2-s2.0-84869109980 |
url |
http://hdl.handle.net/11449/227040 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Food, Agriculture and Environment |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
718-720 |
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_ |
1808128258957377536 |