Estudo hidráulico de gotejadores sob pequenas cargas.

Abstract

This work aims to develop the study of the hydraulic behavior of a unconventional dripper working with small loads below 10 meters water small farmer use irrigation, providing a new alternative to drip systems. Three types of drippers were used, one unconventional type, glass, and two other types already marketed. These drippers were subjected to a between 0.50 m and 6.0 m, the load ratio being determined for the three types hydraulic - flow and pressure losses in the lateral line. The unconventional dripper presented flow rates of 3.2 l / h at 0.50 m hydraulic load, up to 23.0 l / h at 6.0 m load, these flows being compatible with those normally used in conventional dripping. A project developed for I ha using the unconventional dripper in the culture of the maize presented an initial cost within the reach of the small producer. Commercial drippers did not perform well when working under Cipla dripper presented highly variable flow rates that the dripper Dangotas presented very small flow rates.