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| Soccol,Olívio José; Ullmann,Mario Nestor; Frizzone,José Antônio. |
| Studies were carried out to evaluate the "xique-xique" irrigation system of a trickle irrigated subunit. Initial results showed that the system's performance was average, any Emission Uniformity, Statistical Uniformity and Coefficient of Global Variation were 74.51, 77.69, and 22.31%, respectively. The efficiency parameters were below expectations, and values of Application Efficiency (Ae), Storage Efficiency (Se), Deep Percolation (Dp), Deficit Degree (DD) and Adequacy Degree (a) were 100, 47.83, 0, 52.17 and 0% respectively. By adopting new management procedures, it was possible to improve the system's efficiency, reaching values of 90.20, 91.68, 9.80, 8.32 and 52.87% for Ae, Se, Dp, DD and "a", respectively. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Irrigation; Efficiency; Uniformity. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600017 |
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| Soccol,Olívio José; Rodrigues,Lineu Neiva; Botrel,Tarlei Arriel; Ullmann,Mario Nestor. |
| The objective of this work was to evaluate the efficiency of a hydrocyclone to separate sand in irrigation water. To do this, it an experiment was conducted where the hydrocyclone was operated with pressures and discharge that varied from 10 to 60 kPa and from 1,159.90 L h-1 to 2,603.60 L h-1, respectively. During the tests, the sand concentration in suspension varied from 2.81 g L-1 to 7.01 g L-1. The results showed that the best efficiency was obtained with pressure differentials of 10 and 30 kPa, with cut size (d70) of 50 µm. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water quality; Pre-filters; Efficiency. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200003 |
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