Método de otimização para a reabilitação de redes de distribuição de água.

Abstract

This work presents a methodology for economic optimization aimed at the rehabilitation of networks of water distribution, which have flow and pressure deficiency in the consumption nodes. The methodology used is based on the Granados Method (GRANADOS, 1986) of the economic design of pressurized networks. It is an interactive process where by a selection step by step regarding the possibilities of changes of the network pipe and/or the pumping head, so as to optimize the investment and the energy cost of the system rehabilitated. The process, alters the diameters of the pipes of the distribution network, the available pressures and the best pumping head, in such a way that the combined cost, of the investment (physical intervention in the network) and pumping operation (up-to-date energy cost) of the distribution system be minimized. The proposed method has been applied the two networks of water distribution, one threshed and other branched: a fictitious network and Sector 11 of Irrigated the Perimeter Senador Nilo Coelho in Juazeiro - BA, respectively. Also, the proposed model can serve as an effective tool for decision making, being viable your application in real cases.