DOI: https://doi.org/10.36347/sajb.2025.v13i01.014

Pages: 137-147

This article covers a methodology for hydraulic sizing of a drip irrigation system using irrigation water supply tanks. After a general description of the different components of the pressure irrigation network which is here drip, the theory of hydraulic sizing and the technological quality test of the drippers are very detailed in order to assess the performance of the latter. The adequate design of localized irrigation networks must necessarily be based on a good understanding of hydraulic principles so as to be able to correctly size the different components of the irrigation system. The trial on the technological quality test of drippers in a drip irrigation system consisted of testing these emitters using an experimental device. To this end, 3 reservoirs containing drinking water from the NDE were used to supply 3 drip irrigation networks. Measurements of flow rates and volumes made at the level of drippers, booms, boom holders and networks made it possible to verify the quality of the drippers used and the hydraulic performance of the pressure irrigation system. Data relating to these measures were collected and analyzed. It appears from this study that the corresponding pressures at different heights in the tanks are low and vary by 0.11bar and 0.15bar and that the pressure is a function of height. As for the flow rates and volumes of water measured at the drippers, valves, ramps, ramp holders and networks, they are hydraulically the same. In other words, they are statistically identical but in absolute value the flow rate of valve 1 is slightly higher than flow rates 2 and 3. Finally, regarding the technological quality test of the drippers, the flow rate variation coefficients obtained during this test are 0.052; 0.055; 0.056; 0.061 and 0.052 respectively at the water heights in the tank h1, h2, h3, h4 and h5. Then the different uniformity coefficients obtained at these heights are respectively 93.73; 94.26; 94.45; 95.02 and 94.77%. These values above ...