LIMA, Luiz Antônio.; SPÍNDOLA, Luciano Carneiro.; ROCHA, Felizardo Adenilson.; ALVES, Dálcio R.
Résumé:
This work relates and compares the distribution characterístics of water by the microsprinkler RAINBIRD BLUE, model SP30-340 when new and after artificially, simulating a period of exposition in the field of three years(ASTM G-53). This work evaluated the Christiansen coefficient of uniformity (CUC), the volume that drops along the shaft and a relation flow x pressure of the microsprinkler, when operating under pressure values recommended by the manufacturer. The applied water depth was measured at catch cans, in a square grid of (11x11), with one extra catch can in the center, containing the emitter. We observed during the tests that a volume of water as much as 1.18% drops along the shaft of the microsprinkler. The results demonstrate that the Christiansen coefficient of uniformity (CUC) varied from 46 to 63%, allowing the conclusion that it had a worse performance after aged.
