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Effect of pulsating pressure on labyrinth emitter clogging
Zhang, Lin1; Wu, Pute1; Zhu, Delan2; Zheng, Chao1; Zhang, L (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationIRRIGATION SCIENCE
ISSN0342-7188
description.correspondentemailzl0211wy@163.com
Volume35Issue:4Pages:267-274
AbstractEmitter clogging has a direct impact on the performance and service life of a drip irrigation system. A study of labyrinth emitter clogging was conducted to determine the effects of pulsating versus constant pressure on average emitter flow rate (), the Christiansen uniformity coefficient (Cu), and the location of clogged emitters. Under constant pressure, emitters in this study began to be clogged after the 8th irrigation, whereby 15 emitters eventually became clogged; the average emitter flow rate decreased to 75% of the original emitter flow rate () after the 15th irrigation, and Cu decreased rapidly by 68.2%. For pulsating pressure, emitters began to be clogged after the 14th irrigation, only 5 emitters became clogged, and only decreased to 85.3% of , and Cu declined by only 22.6%. These results demonstrate that the anti-clogging performance of emitters with pulsating pressure is better than with constant pressure. Emitter clogging at a constant pressure generally occurred at the inlet and front of labyrinth channels, mainly due to deposition of sediment particles. Emitter clogging with pulsating pressure is due to other impurities (e.g., debris of Teflon tape) besides sediment particles plugging the labyrinth channel. Pulsating pressure is recommended for use in drip irrigation to prevent emitter clogging.
Subject AreaAgriculture ; Water Resources
DOI10.1007/s00271-017-0532-1
URL查看原文
Indexed BySCI
Publication PlaceNEW YORK
Language英语
WOS IDWOS:000403503500001
PublisherSPRINGER
Funding OrganizationNational Natural Science Foundation of China [51409244]; West Light Foundation of the Chinese Academy of Sciences; Basic Scientific Research Business Special Fund Projects, Northwest AF University [2014YB061]; National Science and Technology Support Program [2015BAD22B01-02] ; National Natural Science Foundation of China [51409244]; West Light Foundation of the Chinese Academy of Sciences; Basic Scientific Research Business Special Fund Projects, Northwest AF University [2014YB061]; National Science and Technology Support Program [2015BAD22B01-02]
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7969
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorZhang, L (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Coll Water Resource & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Lin,Wu, Pute,Zhu, Delan,et al. Effect of pulsating pressure on labyrinth emitter clogging[J]. IRRIGATION SCIENCE,2017,35(4):267-274.
APA Zhang, Lin,Wu, Pute,Zhu, Delan,Zheng, Chao,&Zhang, L .(2017).Effect of pulsating pressure on labyrinth emitter clogging.IRRIGATION SCIENCE,35(4),267-274.
MLA Zhang, Lin,et al."Effect of pulsating pressure on labyrinth emitter clogging".IRRIGATION SCIENCE 35.4(2017):267-274.
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