CURVA CARACTERÍSTICA DO MICROASPERSOR NAANDAN HADAR 7110
DOI:
https://doi.org/10.15809/irriga.2009v14n1p95-101Abstract
CURVA CARACTERÍSTICA DO MICROASPERSOR NAANDAN HADAR 7110
Ezequiel Cesar Carvalho Miola; Alexandro Luiz Vielmo; Karine Lançanova dos Santos; Ricardo Luis Schons; Adroaldo Dias Robaina; Márcia Xavier Peiter
Departamento de Engenharia Rural, Universidade Federal de Santa Maria, RS, ezequielmiola@yahoo.com.br
1 RESUMO
Este trabalho foi desenvolvido com o objetivo de determinar alguns parâmetros hidráulicos de um microaspersor NaanDan Hadar 7110 com bocal vermelho de diâmetro 1,10 mm e vazão nominal de 61 l h-1. Conduziram-se testes no Laboratório de Hidráulica Agrícola da Universidade Federal de Santa Maria (UFSM), onde foram determinados a equação característica vazão x pressão e o coeficiente de variação de fabricação (CVf). A equação característica obtida foi , ajustada através de regressão linear, com coeficiente de determinação (r²) de 0,998, caracterizando fluxo turbulento, segundo Pizarro (1990); o coeficiente de variação de fabricação (CVf) médio foi considerado excelente, segundo Solomon (1979), bom, segundo a ABNT (1986) e de categoria A, segundo a ISO 9260 (1991).
UNITERMOS: coeficiente de variação de fabricação, relação vazão x pressão, hidráulica.
MIOLA, E. C. C.; VIELMO, A. L.; SANTOS, K. L.; SCHONS, R. L.; ROBAINA, A. D.; PEITER, M. X. CHARACTERISTIC CURVE OF THE NAANDAN HADAR 7110 MICROSPRINKLER
2 ABSTRACT
This paper was developed with the objective of determining some hydraulic parameters of a microsprinkler NaanDan Hadar 7110 with red mouthpiece of diameter 1,10 mmand nominal flow of 61 lh-1, they behaved tests in the Laboratory of Agricultural Hydraulics of Santa Maria Federal University (UFSM), where they were certain the equation characteristic flow x pressure and the coefficient of production variation (CVf). the obtained characteristic equation was , was adjusted through linear regression, with a coefficient of determination (r²) equal to 0,998, characterizing turbulent flow according to Pizarro (1990); The coefficient of variation of manufacture (CVf ) medium was considered excellent according to Solomon (1979), good according to ABNT (1986) and of category TO according to ISO 9260 (1991).
KEY WORDS: manufacturing variation coeffient, flow x pressure relationship, hydraulic.
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