Pumping System
Mostrando 1-12 de 99 artigos, teses e dissertações.
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1. DIRECT CONNECTION PHOTOVOLTAIC SYSTEM IN MULTI-MOTOR APPLICATION FOR THE RURAL SECTOR
ABSTRACT Photovoltaic pumping systems equipped with variable speed drive have been consolidated as an alternative for water supply in rural locations where energy services are unavailable. Such systems are of the direct connection type and, therefore, it is likely that their operation occurs in two situations: when energy is available and when the reservoir
Eng. Agríc.. Publicado em: 2020-06
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2. Analysis of the long-term effects of groundwater extraction on the water balance in part of the Urucuia Aquifer System in Bahia - Brazil
Resumo Em regiões agrícolas onde há insuficiência de chuva para o cultivo, entender a dinâmica das águas, superficiais e subterrâneas, é fundamental para avaliar o impacto do crescente bombeio de poços sobre o balanço hídrico. O Oeste do estado da Bahia-Brasil, maior área de agronegócio do estado, experimenta uma progressiva ocupação a partir
Rev. Ambient. Água. Publicado em: 28/11/2019
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3. ENERGY EFFICIENCY OF A CENTER PIVOT IRRIGATION SYSTEM
ABSTRACT This study aimed to evaluate the energy efficiency of a center pivot irrigation system operating in a terrain of variable topography. Values of Pumping Energy Efficiency (PEE), Supply Energy Efficiency (SEE), Global Energy Efficiency (GEE) and Specific Energy (Es in kWh m-3) computed at 18 different angular positions of the lateral line were used as
Eng. Agríc.. Publicado em: 2018-04
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4. CFD simulation of the mixing and dispersing of floating particles in a viscous system
Abstract Based on the Gidaspow model, the distributions of velocity, turbulence intensity, and solid concentration in stirred vessels equipped with a down-pumping propeller (TXL),a six flat-blade disc turbine (Rushton), or a down-pumping six 45° pitched-blade turbine (PBTD-6) in a viscous system were simulated. The power curve of the TXL propeller and the d
Braz. J. Chem. Eng.. Publicado em: 2017-10
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5. A Multi-Pumping Flow System with Pulsed Fluidization to Evaluate Soil Capacity for Phosphate Adsorption
Soils with high levels of iron and aluminum, thus negatively the phosphorous availability, affecting crop yields. A prior determination of the soil capacity to adsorb phosphate is relevant to attaining good agricultural performance. To this end, a multi-pumping flow system with pulsed fluidization is proposed. The procedure takes into account the amount of r
J. Braz. Chem. Soc.. Publicado em: 2017-07
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6. Perspectives on the integration of a supercritical fluid extraction plant to a sugarcane biorefinery: thermo-economical evaluation of CO2 recycle systems
Abstract In the present study, the software Aspen Plus® was used to analyse two different systems for CO2 recycle in a SFE process for extraction of more polar compounds using ethanol as co-solvent, the most common co-solvent used due to its environment-friendly nature. The extraction process of β-ecdysone from Brazilian ginseng roots was considered as exa
Food Sci. Technol. Publicado em: 08/05/2017
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7. Comparative study of energy costs in irrigation according to the new brazilian electricity tariff model
ABSTRACT The tariff flags on Brazil came into force in January 2015, applied to all electrical distribution agents of the national interconnected system (SIN) and all final consumers are being charged for this new model. Given this, the cost of electricity in irrigation suffered representative additions involving searches of alternatives, such as the use of
Eng. Agríc.. Publicado em: 2016-10
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8. Surface drainage system for dry docks in shipyards - Case study of Estaleiro Rio Grande (Technical Note)
Abstract This study aims to present a methodology for the design of a surface drainage system for dry docks in shipyards, taking into account the rainfall intensity at the site, the damping capacity of the hydraulic structures (drainage channels) and the pumping capacity of the pumping system. A case study of a dry dock owned by Estaleiro Rio Grande, located
Rem: Rev. Esc. Minas. Publicado em: 2016-06
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9. LOW COST ANALYZER FOR THE DETERMINATION OF PHOSPHORUS BASED ON OPEN-SOURCE HARDWARE AND PULSED FLOWS
The need for automated analyzers for industrial and environmental samples has triggered the research for new and cost-effective strategies of automation and control of analytical systems. The widespread availability of open-source hardware together with novel analytical methods based on pulsed flows have opened the possibility of implementing standalone auto
Quím. Nova. Publicado em: 2016-04
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10. Determinação experimental da curva do sistema e da potência consumida em unidade de bombeamento alimentando dois tanques em desnível com fluidos diferentes / Experimental determination of the curve of the system and power consumed in pumping unit feeding two tanks in different fluids with gap
A bomba centrífuga é uma máquina dinâmica que só pode trabalhar nos pontos de sua curva. Consequentemente, a soma das resistências da tubulação e seus componentes durante a operação deve se situar exatamente na sua curva ou curva da bomba. A literatura para a seleção e especificação deste equipamento alimentando apenas um ponto como um tanque o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2011
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11. Eficiência energética em estações elevatórias de esgotos : estudo de caso em Uberlândia-MG / Energy efficiency in pumping stations sewage : a case study in Uberlândia-MG
Proper operation of a system of collection and removal of sewage is directly related to the optimization of its operation. Given the use of equipment such as AC drives and control panels the distance to sewage pumping stations and large financial viability of installing such devices to sewage pumping stations in small and medium optimization arises to seek a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2011
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12. Sistema especialista fuzzy para dimensionamento de bombeio mecânico
Despite the emergence of other forms of artificial lift, sucker rod pumping systems remains hegemonic because of its flexibility of operation and lower investment cost compared to other lifting techniques developed. A successful rod pumping sizing necessarily passes through the supply of estimated flow and the controlled wear of pumping equipment used in the
Publicado em: 2010