Loading losses in net and disc filters used in dropping irrigation / Perda de carga em filtros de tela e de discos utilizados na irrigação localizada
AUTOR(ES)
Cleomar Ferreira de Oliveira
DATA DE PUBLICAÇÃO
2006
RESUMO
Drip irrigation systems always require filtration systems for a basic water treatment. The filters are fundamental for the water quality used in irrigated farming, providing better performance of irrigation systems and their components. It was studied in this work the loading loss according to the flow in net and disc filters and it was determined the filter sets with the minimum cost for different flows. The trials were carried out in the irrigation laboratory of the Rural Engineering Department of the Superior School of Agriculture Luiz de Queiroz, São Paulo University, using AMIAD brand commercial filters, with net filtration elements (models 3/4, 1, 1 ½ , and 2), and discs (models 1, 1 ½ and 2).The maximum flow used in the trial, for each filter model, was that recommended by the manufacturer. It was observed for all the analyzed filters in the laboratory high values of determination coefficient (R2) indicating a strong potential relation between the flow and loading loss variables. Considering the conditions in which the study was carried out and based on the results obtained, it was concluded that: The potential mathematical model describes adequately the loading loss variation in the net and disc filters according to the flow variation; the net filters provide less loading loss than the disc filters; the water filtration using disc filters show higher total annual cost; for the studied flow limits and for the maximum allowed loading loss, in general the sets composed of 2 filters present the lowest total annual cost, overall, for the filters studied, the loading loss curves according to the flow showed in the manufacturers catalogue did not present accurately the curves obtained on this work in laboratory trial.
ASSUNTO(S)
consumo de energia elétrica filtração irrigação localizada perda de carga água de irrigação - qualidade filtration dropping irrigation water irrigation - quality vazão flow energy consumption loading loss economic cost custo econômico
Documentos Relacionados
- Efeito da qualidade da água na perda de carga em filtros utilizados na irrigação localizada
- Perda localizada de carga em conectores utilizados em microirrigação
- Analise de perda de carga em filtros de tela e disco de sistemas de irrigação localizada utilizando um sistema de aquisição de dados
- Contribuição da estrutura interna na perda de carga de filtros de areia utilizados na irrigação
- Avaliação dos componentes hidraulicos e do material filtrante em filtros de areia utilizados na irrigação