Evaluación técnica de un aspersor autocompensado
Loading...
Date
2025
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
Esta investigación tiene como objetivo evaluar técnicamente el desempeño del aspersor autocompensado Nelson R2000FX. Específicamente se evaluó el coeficiente de uniformidad, la curva característica de descarga y la curva de distribución de la tasa de aplicación. Para ello, se realizaron pruebas experimentales en el Laboratorio de Recursos Hídricos de la Universidad de Concepción, utilizando configuraciones específicas de presión: entre 0,5 y 3 bar para la obtención de la curva característica, y de 1 a 3 bar para la curva de distribución. Asimismo, se evaluó la uniformidad de riego en diferentes marcos de espaciamiento (9x9, 10x10, 12x9 y 12x12 m), buscando las condiciones óptimas de operación del aspersor. Los resultados mostraron que el aspersor mantiene un caudal constante dentro del rango de presión recomendado (1,5 - 2,5 bar), con una variación promedio del 1,5% respecto a los valores entregados por fabricante. Los resultados indicaron que las presiones de 1,5 y 2 bar son las óptimas para obtener una buena uniformidad de riego, mientras que los coeficientes de Christiansen (CUc) y Merriam y Keller (UD) fueron más altos en marcos de espaciamiento reducidos, como 9x9 y 12x9 m, debido a un mayor traslape entre aspersores. Este estudio confirma que el aspersor Nelson R2000FX es un emisor eficiente y sostenible para el manejo hídrico agrícola, destacándose por su capacidad de operación a bajas presiones y por contribuir a la optimización de los recursos Hídricos.
The purpose of this thesis is to technically evaluate the performance of the Nelson R2000FX self-compensating sprinkler. Specifically, the uniformity coefficient, the discharge characteristic curve and the application rate distribution curve were evaluated. To this end, experimental tests were carried out at the Water Resources Laboratory of the University of Concepción, using specific pressure settings: between 0.5 and 3 bar to obtain the characteristic curve, and from 1 to 3 bar for the distribution curve. Likewise, irrigation uniformity was evaluated in different spacing frames (9x9, 10x10, 12x9 and 12x12 m), seeking the optimal operating conditions of the sprinkler. The results showed that the sprinkler maintains a constant flow rate within the recommended pressure range (1.5 - 2.5 bar), with an average variation of 1.5% with respect to the values provided by the manufacturer. The results indicated that pressures of 1.5 and 2 bar are optimal for obtaining good irrigation uniformity, while the Christiansen (CUc) and Merriam and Keller (UD) coefficients were higher in reduced spacing frames, such as 9x9 and 12x9 m, due to a greater overlap between sprinklers. This study confirms that the Nelson R2000FX sprinkler is an efficient and sustainable emitter for agricultural water management, standing out for its capacity to operate at low pressures and for contributing to the optimization of water resources.
The purpose of this thesis is to technically evaluate the performance of the Nelson R2000FX self-compensating sprinkler. Specifically, the uniformity coefficient, the discharge characteristic curve and the application rate distribution curve were evaluated. To this end, experimental tests were carried out at the Water Resources Laboratory of the University of Concepción, using specific pressure settings: between 0.5 and 3 bar to obtain the characteristic curve, and from 1 to 3 bar for the distribution curve. Likewise, irrigation uniformity was evaluated in different spacing frames (9x9, 10x10, 12x9 and 12x12 m), seeking the optimal operating conditions of the sprinkler. The results showed that the sprinkler maintains a constant flow rate within the recommended pressure range (1.5 - 2.5 bar), with an average variation of 1.5% with respect to the values provided by the manufacturer. The results indicated that pressures of 1.5 and 2 bar are optimal for obtaining good irrigation uniformity, while the Christiansen (CUc) and Merriam and Keller (UD) coefficients were higher in reduced spacing frames, such as 9x9 and 12x9 m, due to a greater overlap between sprinklers. This study confirms that the Nelson R2000FX sprinkler is an efficient and sustainable emitter for agricultural water management, standing out for its capacity to operate at low pressures and for contributing to the optimization of water resources.
Description
Tesis presentada para optar al título de Ingeniero Civil Agrícola
Keywords
Riego, Aspersores, Riego por aspersión