Flow rate dynamics of pressure-compensating drippers under clogging effect

Revista Brasileira de Engenharia Agricola e Ambiental

Ait-Mouheb, Nassim¹  Molle, Bruno²  Frizzone, José A.²  Pinto, Marinaldo F.³  Camargo, Antonio P. de³  Alves, Dinara G.⁵ 

[1] Irrigation, Aix-En-Provence, França;Laboratoire d’Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil;Universidade de São Paulo, Piracicaba, Brazil;Études et Recherches sur les Matériels d’

关键词: emitters;    trickle irrigation;    clogging.;   

DOI  :  10.1590/1807-1929/agriambi.v21n5p304-309

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The clogging dynamics of pressure-compensating drippers is still poorly addressed, and its understanding is quite important to control clogging. The aim of this study was to evaluate the flow performance of pressure-compensating drippers under clogging effect. Eight pressure-compensating emitters, model J-SC Jain PC-PLUS with nominal flow rate of 2.2 L h-1 were evaluated. The tests were run for 8 h d-1 for 4 weeks, a total of 160 h. Every 40 h, the concentration and granulometry of suspended particles were increased, by adding 125 mg L-1 of solids, composed of sand. The flow rate of the emitters was determined using a weight measurement system. Flow rate variations of the emitters did not follow a defined pattern. Clogging seems to occur randomly and abruptly. Sometimes the flow rate exceeded the nominal value (maximum relative flow rate of 182%) and other times it was lower than the nominal value (minimum relative flow rate of 0%).

【 授权许可】

CC BY