Pumping System
Mostrando 13-24 de 99 artigos, teses e dissertações.
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13. Comportamento elétrico, mecânico e hidráulico de um sistema de bombeamento sob o enfoque da qualidade de energia elétrica e eficiência energética
The objective of this thesis is to present a methodology of comparison of the electric, mechanical and hydraulical performance of a pump system, under the point of view of the energy efficiency, when supplied with signals power quality. The form used for this intention was to the variation of controlled outflow for strangulation of valve or variation of freq
Publicado em: 2010
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14. São Paulo in the middle of the marginals: the paulistan image reflectedon the rivers Pinheiros and Tietê / São Paulo no centro das marginais: a imagem paulistana refletida nos Rios Pinheiros e Tietê
The rivers Pinheiros and Tietê have always stood out as a unique landscape on the hilly plateau over which São Paulo has settled. In a process of transformation already begun at the end of the 19th century and whose apex occurred during the 1940s and 1960s decades - when these creeks were channelized and rectified and a pair of urban freeways were built on
Publicado em: 2010
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15. Sistemas de análises químicas em fluxo explorando mecanismos de re-alimentação, calibração multivariada e outras abordagens para melhoria em desempenho / Flow systems exploiting feed-back mechanisms, multivariate calibration and other strategies for improving the analytical performance
Studies focusing on performance of intelligent analytical flow systems, association with multivariate calibration or use of nanocrystals as sensitizers were carried out. Moreover, improvements related to modifications in flow pattern were evaluated with emphasis to in-line dialysis. To this end, a strategy for implementing simultaneous determinations of iron
Publicado em: 2010
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16. Algoritmos evolucionÃrios multipopulaÃÃo na otimizaÃÃo multiobjetiva da remediaÃÃo de Ãguas subterrÃneas / Multi-population Evolutionary Algorithm Multi-Objective Optimization of Groundwater Remediation
Through the last three decades the evolutionary algorithms have been successful on application to many areas. Easily applied, efficiency and confidence are the main advantages of the evolutionary algorithms. In the groundwater remediation, generally, the objectives are the cost minimization, minimization of contaminant presence, maximization of pumping effic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/07/2009
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17. Tempo de residÃncia da Ãgua em um sistema experimental de aquicultura integrada com camarÃes, ostras e macroalgas. / Residence time of water in an experimental integrated aquaculture with shrimp, oysters and seaweeds.
Shrimp culture presented at a world-wide level a significant growth in recent years, mainly in tropical and subtropical regions, however, this expansion comes with diverse environment negative impacts, mainly related to the cultures effluents, which are rich in nitrogen and phosphorous, that are many times discarded in the environment without any previous tr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2009
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18. Evaluation of Photovoltaic Pumping Systems / Avaliação de sistemas fotovoltaicos de bombeamento
The present dissertation shows the evaluation of three Photovoltaic Pumping Systems, which involves two configurations: the equipment dedicated to the photovoltaic technology and the alternative equipment with nominal powers between 0.75 CV and 1.0 CV. The results show that the alternative configuration attained minor daily efficiency of the motopump system.
Publicado em: 2009
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19. Sistemas de análises químicas em fluxo explorando multi-impulsão, interface única ou quimiometria / Flow systems exploiting multi-pumping, single interface or chemometry
Multi-pumping flow systems (MPFS) present as an unique feature the use of solenoid pumps as fluid propelling devices, which deliver pulsed flows. This flow regime was evaluated in order to improve mixing conditions between the involved solutions, heating transfer and gas diffusion.The association of the chemometric methods of analysis and MPFS systems was de
Publicado em: 2009
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20. Estimativa do indice de nacionalização dos sistemas fotovoltaicos no Brasil / Estimates of nationalization index of PV systems in Brazil
The Law nº 10.438/02 established the Program of Incentives for Alternative Electric Power Sources - PROINFA, which is the only national program aimed to foster alternative renewable energy sources and to increase the share of electric energy production from enterprises based on wind power, small hydropower plants and biomass in the interconnected national p
Publicado em: 2009
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21. UTILIZAÇÃO DE SISTEMAS, SOLAR E EÓLICO, NO BOMBEAMENTO DE ÁGUA PARA USO NA IRRIGAÇÃO / SOLAR AND WIND SYSTEMS UTILIZATION IN WATER PUMPING FOR USE IN IRRIGATION
No presente trabalho, foi realizado uma pesquisa aplicada em duas estações, a primeira localizada na localidade de Canabarro e a segunda no Colégio Politécnico da Universidade Federal de Santa Maria na cidade de Santa Maria , RS, com equipamentos eólicos e fotovoltaicos para bombeamento de água . Esses foram utilizado para irrigação em frutíferas, e
Publicado em: 2009
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22. Real-time optimization of water supply system operation / Otimização energética em tempo real da operação de sistemas de abastecimento de água
This work presents a computational model for real-time optimization of water-distribution networks operation. An integrated software tool has been developed which is composed of three main modules: (i) a hydraulic simulator that performs the extended period simulation of the system (EPANET); (ii) a short-term demand-forecasting model, based on the moving Fou
Publicado em: 2009
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23. Construção de uma armadilha magneto-ótica para aplicações em informação quântica e física atômica / Construction of a Magnet-Optical Trap for Aplications at Quantum Information and Atomic Physics
We built a magneto-optical trap (MOT) for rubidium as a first step for the trapping of a cloud of cold atoms in a periodic potential formed by light beams. This system will be used for experiments in atom physics, with possible applications in quantum information. A MOT is necessary to avoid the problems imposed by the thermal agitation of the atoms to the m
Publicado em: 2009
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24. Impulse control with liquid level limits and minimization of actuations / Controle impulsional limitação da variação de nivel com minimização das atuações
Os elevados custos de produção na extração de petróleo marítimo são reduzidos com um sistema inovador que a Petrobras está desenvolvendo, denominado VASPS (do inglês, Vertical Annular Separation and Pumping System), capaz de separar gás e líquido ainda no assoalho oceânico. Esta dissertação trata do ajuste do nível de l´iquido no reservatóri
Publicado em: 2009