Desempenho hidráulico e perfil de distribuição de água de emissores tipo microaspersor multifuncional

Abstract

1 Departamento de Engenharia Agricola Universidade Federal Rural de Pernambuco, Rua D Manoel Medeiros, s/n, Dois Irmaos, Recife/PE. E-mail: mjmguimaraes@hotmail.com/hresoares@hotmail.com 2 Colegiado de Engenharia Agricola e Ambiental Universidade Federal do Vale do Sao Francisco, Campus Juazeiro, Avenida Antonio Carlos Magalhaes, 510 Santo Antonio, Juazeiro-BA. Email: prfmede@hotmail.com 3 Programa de Pos-Graduacao em Engenharia Agricola Universidade Federal Rural de Pernambuco, Rua D Manoel Medeiros, s/n, Dois Irmaos, Recife/PE. Email: enio.silva@deagri.ufrpe.br 384 Guimaraes et al. Rev. Bras. Agric. Irr. v. 9, no.6, Fortaleza, p.383391 , Nov Dez, 2015 This study aimed to evaluate the hydraulic characteristics and uniformity of water distribution from the uniformity coefficients (CUC, CUE and CUD) of emitters microsprinkler type multifunctional. The tests were carried out in the experimental area of the Department of Rural Technology UFRPE. It were evaluated microsprinkler MFN with black ballerina and nozzles with colors graphite (ǿ = 0.80 mm) and orange (ǿ = 1.80 mm). For the determination the flow rate, each emitter was subjected to pressures of 250, 200, 150, 100 and 50 kPa. Flow rates were collected a period of six minutes (10% of average flow) and measured using a precision balance. To evaluate the distribution collectors were used with area 50 cm, arranged in rows of four quadrants spaced 0.3 m. The coefficient of manufacturing average variation for the nozzle of colors graphite and orange were 1.66% and 5.07%, respectively, classified as good uniformity, according to ABNT. As for the flow, it was verified that tests showed a small tendency to overestimate, around 8.02% on average. Despite all configurations tested overlays have presented good results of CUC, CUE and CUD, only the graphite nozzle obtained results with diameter next to that provided by the manufacturer.