Effect of pulsating pressure on labyrinth emitter clogging

doi:10.1007/s00271-017-0532-1

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	Effect of pulsating pressure on labyrinth emitter clogging
	Zhu, Delan 1; Zheng, Chao 2; Zhang, L (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Wu, Pute 2; Zhang, Lin 2
刊名	IRRIGATION SCIENCE
	2017
卷号	35 期号:4 页码:267-274
ISSN号	0342-7188
DOI	10.1007/s00271-017-0532-1
文献子类	Article
英文摘要	Emitter 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.
学科主题	Agriculture ; Water Resources
URL标识	查看原文
出版地	NEW YORK
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000403503500001
资助机构	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] ; 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] ; 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] ; 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]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7969]
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Zhang, L (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, Coll Water Resource & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Delan,Zheng, Chao,Zhang, L ,et al. Effect of pulsating pressure on labyrinth emitter clogging[J]. IRRIGATION SCIENCE,2017,35(4):267-274.
APA	Zhu, Delan,Zheng, Chao,Zhang, L ,Wu, Pute,&Zhang, Lin.(2017).Effect of pulsating pressure on labyrinth emitter clogging.IRRIGATION SCIENCE,35(4),267-274.
MLA	Zhu, Delan,et al."Effect of pulsating pressure on labyrinth emitter clogging".IRRIGATION SCIENCE 35.4(2017):267-274.