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	Provedor de dados AGRIAMBI (2) REA (1) Autor Alves,Dinara G. (3) Pinto,Marinaldo F. (3) Camargo,Antonio P. de (2) Ait-Mouheb,Nassim (1) Botrel,Tarlei A. (1) Carvalho,Daniel F. de (1) Frizzone,José A. (1) Molle,Bruno (1) Pereira,Diego J. de S. (1) Salvador,Conan A. (1) Saretta,Ezequiel (1) Mais... Palavra-chave Clogging (1) Economic analysis (1) Emitter clogging (1) Emitters (1) Energy efficiency (1) Pumping system (1) Screen filter (1) Trickle irrigation (1) Water quality (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2021 (1) 2017 (1) 2016 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última TECHNICAL AND ECONOMIC FEASIBILITY OF USING A VARIABLE-FREQUENCY DRIVE IN MICRO-IRRIGATION SYSTEMS REA Pinto,Marinaldo F.; Pereira,Diego J. de S.; Carvalho,Daniel F. de; Alves,Dinara G.; Salvador,Conan A.. ABSTRACT Irrigation is essential for the development of crops in regions with scarcity or irregular rainfall distribution, enabling high productivity. However, the use of water resources and electrical energy leads to a concern with irrigation efficiency. Pressure demand varies during the operations of irrigation systems and the appropriate pressure can be regulated by variable-frequency drives for the power supply of the motor-pump set. This study aimed to analyze the technical and economic feasibility of using a variable-frequency drive to adjust the pressure in subunits of micro-irrigation systems. Laboratory tests were carried out to determine the electrical power consumed in each irrigated subunit for different slopes and the application or not of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pumping system; Energy efficiency; Economic analysis. Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000100112 Development of a filtration system with high-frequency flow reversal AGRIAMBI Pinto,Marinaldo F.; Alves,Dinara G.; Saretta,Ezequiel; Camargo,Antonio P. de; Botrel,Tarlei A.. ABSTRACT The aim of this study was to develop a filtration system with high-frequency flow reversal and minimum requirement of water for cleaning routines. The system was developed in the period from 2011 to 2013 and consists of three screen filters and eleven solenoid valves electronically controlled by a controller that operates based on head loss measurements. The following evaluations were carried out: head loss curve as a function of flow rate; filtrating efficiency as a function of solids concentration, frequency of flow reversal and increment in head loss. The experimental design was completely randomized in a factorial scheme with three replicates and two treatment levels for each factor. The filtration efficiency was equal to 98.6% for particles... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water quality; Emitter clogging; Screen filter. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400295 Flow rate dynamics of pressure-compensating drippers under clogging effect AGRIAMBI Pinto,Marinaldo F.; Molle,Bruno; Alves,Dinara G.; Ait-Mouheb,Nassim; Camargo,Antonio P. de; Frizzone,José A.. ABSTRACT The clogging dynamics of pressure-compensating drippers is still poorly addressed, and its understanding is quite important to control clogging. The aim of this study was to evaluate the flow performance of pressure-compensating drippers under clogging effect. Eight pressure-compensating emitters, model J-SC Jain PC-PLUS with nominal flow rate of 2.2 L h-1 were evaluated. The tests were run for 8 h d-1 for 4 weeks, a total of 160 h. Every 40 h, the concentration and granulometry of suspended particles were increased, by adding 125 mg L-1 of solids, composed of sand. The flow rate of the emitters was determined using a weight measurement system. Flow rate variations of the emitters did not follow a defined pattern. Clogging seems to occur randomly... Tipo: Info:eu-repo/semantics/article Palavras-chave: Emitters; Trickle irrigation; Clogging. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500304 Registros recuperados: 3 Primeira ... 1 ... Última

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