Hydraulic Equipment
Mostrando 1-12 de 37 artigos, teses e dissertações.
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1. BIOGAS YIELD AND PRODUCTIVENESS OF SWINE MANURE FOR DIFFERENT REACTOR CONFIGURATIONS
ABSTRACT The progression of the organic loading rate (OLR) up to a certain limit increases biogas production. The limit and operation range vary according to the configuration of the reactor and are associated with other variables that generate different results with respect to biogas yield (BY) and biogas productiveness (BP). The aim of this study was to in
Eng. Agríc.. Publicado em: 2020-12
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2. Numerical study of upstream disturbances on the performance of electromagnetic and ultrasonic flowmeters
ABSTRACT Electromagnetic and ultrasonic flowmeters are high precision devices that can measure the water flow in pressurized irrigation networks. In these networks, the inadequate installation distance of flow control valves generates upstream disturbances which will increase measurement errors and reduce the accuracy of the equipment. Therefore, estimating
Sci. agric. (Piracicaba, Braz.). Publicado em: 04/11/2019
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3. SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY
RESUMO A caracterização da estrutura de variabilidade espacial de propriedades hidráulicas e da salinidade do solo é de grande importância para um adequado manejo agrícola de vales aluviais e para proteção da vegetação ciliar. Dessa forma, o objetivo deste trabalho foi a verificação da precisão de medições indiretas da condutividade elétrica
Rev. Caatinga. Publicado em: 09/05/2019
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4. Estimativa do coeficiente de transferência de massa de oxigênio com o uso da técnica das sondas solúveis flutuantes: um estudo de laboratório
RESUMO A sonda solúvel flutuante (SSF) é considerada uma técnica de baixo custo para a estimativa do coeficiente de transferência de massa de oxigênio na interface ar-água (KL). Essa técnica se baseia no fato que KL pode ser correlacionado com a velocidade de dissolução do sólido solúvel (VS), uma vez que ambos os parâmetros são influenciados pe
Eng. Sanit. Ambient.. Publicado em: 21/03/2019
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5. Distribuição do tempo de residência e letalidade no processamento térmico contínuo de líquidos com escoamento laminar não ideal em trocadores bitubulares. / Residence time distribution and lethality in the continuous thermal processing of liquids with non ideal laminar flow in bitubular exchangers.
Tubular heat exchangers are widely used for thermal processing of viscous liquid foods because they have larger hydraulic diameters than the plate heat exchangers. The calculation of lethality in this type of exchanger is directly related to velocity profile and the residence time distribution (RTD). For the laminar flow of viscous fluids, Newtonian and non-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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6. New mechanized system for circle spraying of oil palms seedling emergence
A new machine system has been designed, developed and evaluated for extensive circle spraying of oil palms (Elaeis guineensis Jacq.) in an effort to overcome the inefficient spraying problem with the conventional spraying system. The machine system consists of a four-wheeled drive 4WD prime mover with front mounted machine attachments for the circle spraying
Scientia Agricola. Publicado em: 2012-04
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7. Coeficiente de descarga em emissores de pivô central / Discharge coefficient for center pivot emitters
A crescente busca por tecnologias com melhor desempenho energético faz com que a engenharia da irrigação desenvolva emissores que apresentem coeficientes de descarga mais elevados. O presente trabalho teve como objetivo determinar os coeficientes de descarga dos emissores comerciais (Senninger, Nelson e Fabrimar), utilizados em sistema de irrigação piv�
Publicado em: 2011
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8. Desenvolvimento de equipamento para realização de ensaios HCT com o uso da bomba de fluxo
In general, the tailings are disposed in the form of pulp, mainly because the condition of the residue is the natural byproduct of the minerals concentrations activities, always associated with large water demands. The final disposal of wastes in pulp occurs by hydraulic filling techniques in large reservoirs of check dams. In the case of more granular taili
Publicado em: 2010
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9. Sistema de irrigação por capilaridade na produção de porta-enxertos de mudas citricas na fase de sementeira / Irrigation system by capillary action in the citrus rootstocks production in seedings stage
The water and nutrition management in the production of citrus rootstocks in the seedling phase performed by sprinkler systems, manually operated, presents the environmental outcome of water or residual solution disposal from the fertigation. The generated wastewater is generally discarded directly in the soil with the risk to reach the groundwater and conta
Publicado em: 2010
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10. Partition of root water extraction between soil layers with distinct hydraulic properties / Partição da extração da água do solo por plantas entre camadas com propriedades hidráulicas distintas
Root water extraction is determined by soil hydraulic conductivity and water potential gradients, both dependent on soil water content. In this dissertation the experimental test of a root water extraction and partition model is described for a plant whose root system is divided over soil layers with distinct hydraulic properties. An experiment was conducted
Publicado em: 2009
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11. Partição da extração da água do solo por plantas entre camadas com teores de água distintos / Partition of root water extraction between soil layers with distinct water contents
Water shortage is one of the most limiting factors for agricultural production. The understanding of factors that rule the extraction of soil water by plants and its distribution along the root system under contrasting hydraulic conditions is important for fine-tuning hydrological models which are a reference for crop growth models, meteorological models, am
Publicado em: 2009
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12. Building systems of gas water heating: parameters of design and management / Sistemas prediais de aquecimento de água a gás: Parâmetros de dimensionamento e gerenciamento
The building systems of water heating are responsible for a significant parcel of energy consumption in country, and the efficiency of use of this energy is related to the quality of projects and constructive alternatives that allow rationalizing the use of natural resources. With the trend of incorporating the measurement of individual water and solar heati
Publicado em: 2009