Reservoir Operation
Mostrando 25-36 de 77 artigos, teses e dissertações.
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25. AplicaÃÃo da teoria dos nÃmeros difusos em um modelo de operaÃÃo de reservatÃrio, para estudar o comportamento da vazÃo regularizada e do rendimento. / The Application of Fuzzy Number Theory to a reservoir operation model,in order to study the regularized flow beharior and the efficiency.
Este trabalho trata da aplicaÃÃo da Teoria Fuzzy em balanÃo hidrolÃgico de um reservatÃrio, para avaliar sua capacidade de previsÃo, na determinaÃÃo do cÃlculo do risco de falha de sistemas compostos por este tipo de corpo hÃdrico. No desenvolvimento da pesquisa, uma metodologia, transformando as equaÃÃes do balanÃo hidrolÃgico em equaÃÃes fu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/01/2008
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26. Effect of ammonia load on efficiency of nitrogen removal in an SBBR with liquid-phase circulation
The removal of biological nitrogen from a synthetic wastewater with different ammonium nitrogen concentrations (50 and 100 mgN-NH4+/L) by a nitrification and denitrification process using a sequencing batch biofilm reactor (SBBR) with liquid-phase circulation was studied. The system with a total working volume of 4.6 L (3.7 L in the reactor and 0.9 L in the
Brazilian Journal of Chemical Engineering. Publicado em: 2008-06
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27. Heterogeneidade espacial e a qualidade das águas superficiais do Reservatório Guarapiranga (São Paulo-SP-Brasil) / Spatial heterogeneity and water quality of superficial water at the Guarapiranga reservoir (São Paulo-SP- Brazil)
Environmental heterogeneity studies are of great importance in ecology, once it interferes on ecosystems structure and working. Water reservoirs in particular are artificial ecosystems with high spatial and temporal heterogeneity. To test the hypothesis of existence of a pattern of longitudinal heterogeneity, and discuss water quality according to CONAMA 357
Publicado em: 2008
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28. Estudo sobre injeção de agua acima da pressão de propagação de fratura / Study of water injection with fracture propagation pressure
Produced water re-injection is a valuable method of water disposal and pressure and energy support. A common water re-injection problem is the injectivity loss, which affects negatively the process and restrains optimal water injection rates. The injectivity loss can be minimized by water injection with fracture propagation pressure (IFPP), which aims to res
Publicado em: 2008
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29. Operations planning of large-scale hydrothermal systems. / Planejamento da operação de sistemas hidrotérmicos de grande porte.
This paper presents the development of a Decision Support System (DSS) for the operational planning of large-scale hydrothermal systems formed by a series of hydroelectric and thermoelectric power plants, operated for the production and service demands for energy. Other sources of energy production, the expansion of the system, water transfers, multiple uses
Publicado em: 2008
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30. Medidas não convencionais de reservação dágua e controle da poluição hídrica em lotes domiciliares / Unconventional measures of reservoir water and control water pollution in urban lots
This paper aims to analyze the reduction of hydropollution through monitoring non conventional reservation of water applied in urban lots starting from individual and global efficiency integrated to the lot. It also prioritizes the monitoring of both quality and quantity of pollution and the rain flow from its draining. The inclusion of these measurements on
Publicado em: 2008
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31. Uso de poços inteligentes em desenvolvimento de campos de petroleo sob incertezas / Use of smart wells in petroleum field developments under uncertainties
The selection of a production strategy is one of the most important tasks to ensure success of petroleum fields development. In order to improve the performance of fields, the use of smart wells is becoming a common practice. In such wells, devices like valves and sensors are able to monitor and control the production in real time, adding flexibility to the
Publicado em: 2008
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32. ANÁLISE DO DESEMPENHO DE UM SISTEMA DE COGERAÇÃO COM UMA MICROTURBINA A GÁS NATURAL / PERFORMANCE ANALYSIS OF A GAS FIRED MICROTURBINE BASED COGENERATION SYSTEM
In this dissertation the performance of a cogeneration system was simulated using data obtained in tests of a natural gas fired 30 kW microturbine, operated during peak hours, and coupled to a heat recovery unit to generate hot water to be consumed in the showers of the PUC-Rio Gymnasium, together with a thermal reservoir to match the demand. Initially, the
Publicado em: 2007
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33. RegularizaÃÃo de VazÃe em ReservatÃrios AtravÃs dos Modelos Mensal e Bi-Sazonal: A DuraÃÃo da EstaÃÃo Seca e a Proposta da EvaporaÃÃo Equivalente / ADJUSTMENT OF RESERVOIR IN OUTFLOWS THROUGH MODELS MONTHLY AND BI-SAZONAL: THE DURATION OF THE SEASON DRY AND THE PROPOSAL EQUIVALENT EVAPORATION
The Brazilian Semi-Arid Region is marked by physical and climatic factors that influence directly in the survival of the population. The irregular pluviometric regimen, the high taxes of evaporation and the crystalline ground predominance make the Cear? a satiated State of intermittent rivers. x the reservoirs are calculeted to regularize outflows with rando
Publicado em: 2007
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34. Aditivação de pastas geopoliméricas com tetraborato de sódio e látex não iônico para cimentação de Poços de Petróleo
The development of activities in the oil and gas sector has been promoting the search for materials more adequate to oilwell cementing operation. In the state of Rio Grande do Norte, the cement sheath integrity tend to fail during steam injection operation which is necessary to increase oil recovery in reservoir with heavy oil. Geopolymer is a material that
Publicado em: 2007
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35. Modelo de planejamento da operação de sistemas hidrotérmicos de produção de energia elétrica. / Operation planning model of electrical energy hydrothermal systems.
Esta tese trata do desenvolvimento de um modelo de otimização para planejamento da operação de sistemas hidrotérmicos de produção de energia elétrica, chamado SolverSIN. São abordados ao longo do texto os seguintes itens: a estruturação do problema de planejamento da operação hidrotérmica, o reservatório equivalente de energia potencial, o bal
Publicado em: 2007
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36. Use of evolutionary algorithms on hydrologic model calibration and on operation of reservoir systems / Uso de Algoritmos EvolucionÃrios na CalibraÃÃo de Modelos HidrolÃgicos e na OperaÃÃo de Sistemas de ReservatÃrios
A experiÃncia tem mostrado que buscas de Ãtimos baseadas em apenas um objetivo, por mais cuidadosas que sejam, nÃo conseguem determinar uma soluÃÃo que modele satisfatoriamente um dado fenÃmeno. O uso de abordagens multiobjetivo pode ainda ser justificado pela natureza dos problemas reais, a qual requer a utilizaÃÃo de mÃltiplos objetivos, muitas ve
Publicado em: 2007