Dimensionamento econômico de uma parcela de irrigação por gotejamento.

Abstract

The high costs of installing drip systems make diffusion of this technique difficult. The design of these systems is based on plots, basic units where most of the pipes are installed. The usual design methodology is based on the recommendations of Keller and Karmeli (1975) for the optimum design of a plot, based on parameters related to the format and distribution of the head loss in branch and branch, based on costs equipment that portrays a particular market reality. The present work, in addition to reassessing and updating this design methodology, includes the determination of the delivery point as a new optimization parameter, and is based on more detailed elements, such as: "layout" of the parcel pipes, variation of the pressure in the plot, flow of the drippers, spacing between the drippers and the cost factors of the pipes. A classic analytical optimization model was used which resulted in generic, concise and easy to apply expressions. The results of the application of the proposed methodology highlighted its importance.