Reservoir Operation
Mostrando 49-60 de 77 artigos, teses e dissertações.
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49. Integration of a water quantity mathematical net-flux model (ACQUANET) with a water quality mathematical reservoir model (CE-QUAL-R1) - Case Study: Jaguari-Jacarei Reservoir Cantareira System. / Integração de um modelo matemático de quantidade de água em rede de fluxo (ACQUANET) com um modelo matemático de qualidade de água em represas (CE-QUAL-R1) - Estudo de Caso: Represa Jaguari-Jacareí - Sistema Cantareira.
A methodology was developed for the integration of two mathematical models, one of water quantity in network named ACQUANET with other of water quality, in one dimension, applied in revervoirs, named CE-QUAL-R1. In order to achieve this goal, an INTERFACE was developed to link the CE-QUAL-R1 with ACQUANET outflow results. It should be highlighted that ACQUAN
Publicado em: 2004
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50. ESTUDOS PIEZOMÉTRICOS E ANÁLISE DE ESTABILIDADE DE TALUDES DA BARRAGEM BICO DA PEDRA
In this work, an attempt was made to establish a simple field procedure to be used on the Bico de Pedra dam stability and safe operation. This dam is located at Janaúba city, state of Minas Gerais, Brazil. This procedure was called Risk Table. For the Risk Table elaboration a sequence of studies and numerical simulations were developed, based on laboratory
Publicado em: 2004
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51. Life Cycle Inventory of Brazilian hydroelectric generation- Itaipu Power Plant: first approximation. / "Inventário de ciclo de vida da geração hidrelétrica no Brasil - Usina de Itaipu: primeira aproximação"
The Life Cycle Assessment (LCA) has been proven to be an important environmental assessment tool, mainly due to its focus on function, which allows the consideration of the environmental performance of products, itself a proceeding that has been more and more requested by different social actors. However, for LCA to be widely and trustfully used, the dev
Publicado em: 2004
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52. COMPORTAMENTO GEOTÉCNICO DA BARRAGEM DE CURUÁ-UNA, PARÁ / GEOTECHNICAL BEHAVIOR OF CURUÁ-UNA DAM, PARÁ.
The geotechnical behavior of Curuá-Una dam, Pará, was studied due its importance to the North Region of Brazil. The power plant, in operation since 1977, is located in the Amazon forest, next to the city of Santarém. The study was comprised of the evaluation of current operation conditions of the dam and prediction of its performance after a possible rise
Publicado em: 2003
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53. SPOT PRICE FORECASTING IN THE ELECTRICITY MARKET / PREVISÃO DO PREÇO SPOT NO MERCADO DE ENERGIA ELÉTRICA
This thesis focuses on spot price forecasting and risk management in the Brazilian electricity industry. It is proposed a new methodology for the problem based on neuro- fuzzy systems and the dispatching and planning operation programs. The main advantage of the approach is to be able to get more informative spot price distributions than using the operation
Publicado em: 2003
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54. Sistema de suporte a decisão para alocação de água em projetos de irrigação. / Decision support system for water allocation in irrigation projects.
In this work, an adaptation in the ModSimLS surface reservoir has been made in order to make it work as a soil reservoir. The model is called IrrigaLS. When compared to the water balance method, it was ascertained that IrrigaLS is suitable for determining supplementary and/or total irrigation demands. The model adaptation considers agricultural production as
Publicado em: 2003
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55. Sistemas de automação e supervisão do laboratório de avaliação dos processos de medição de vazão e BSW
During a petroleum well production process, It is common the slmultaneous oil and water production, in proportion that can vary from 0% up to values close to 100% of water. Moreover, the production flows can vary a lot, depending on the charaeteristies of eaeh reservoir. Thus being, the meters used in field for the flow and BSW (water in the oil) measurement
Publicado em: 2003
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56. "Methodology for determination of organic geochemistry biomarkers in sediment - Aliphatic hydrocarbons, PAHs, Sterols and Alkenones" / "Metodologia para determinação de biomarcadores geoquímicos orgânicos em sedimentos - Hidrocarbonetos Alifáticos e Aromáticos, Esteróis e Alquenonas"
The fate of most organic matter in the oceans is the marine sediment. This preserved organic matter became an unique reservoir of information about the operation of biogeochemical processes in the geological past, and how these processes responded to environmental changes. Some molecules are only synthesized by sea organisms, others only by higher plants. Th
Publicado em: 2003
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57. Program of waste and sewage from small craft inland harbors, passengers waterway terminals and recreational boating in reservoirs. / Um estudo sobre a gestão de resíduos e efluentes em marinas, terminais hidroviários de passageiros e embarcações de turismo e lazer no Reservatório de Bariri/Hidrovia Tietê-Paraná.
The environmental aspects related to the daily operations in small craft inland harbors, in passenger waterway terminals, in leisure and tour vessels, in addition to other supporting facilities such as fluvial shipyards, indicate the need for adoption of sustainable models of management of such organizations, due to the fact that their activities are directl
Publicado em: 2003
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58. ANÁLISE DA APLICAÇÃO DE UM SISTEMA DE BOMBEAMENTO MULTIFÁSICO SUBMARINO NA PRODUÇÃO DE PETRÓLEO / EVALUATION OF A SUBSEA MULTIPHASE PUMPING SYSTEM APPLIED ON PETROLEUM PRODUCTION
A subsea oil production system allows simultaneous production of several wells with different flow rates when the system has a subsea manifold. In order to balance the different flow rates, the higher production wells have their flow rates reduced via a choking system. As a result, the total flow is lower than the summmation of all individual well flow rates
Publicado em: 2003
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59. Analyze of the environmental impact study (EIS) and the water quality - the case in Brejo Santo borough,CearÃ,Brazil / AnÃlise do estudo de impacto ambiental e da qualidade da Ãgua - o caso AÃude Atalho - Brejo Santo,CearÃ
This work has as objective to analyze the Environmental Impact Study (EIS), carried through by SIRAC Consultant, and the water quality of Atalho reservoir situated in Brejo Santo borough, CearÃ, Brazil; to evaluate the EIS under the point of view of the released norms in Resolution 01/86 of CONAMA. The period of study was understood from January 2001 to Jan
Publicado em: 2002
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60. Otimização de sistemas hidroenergéticos. / Hydropower systems optimization.
An application analysis of nonlinear programming is developed for hydropower systems optimization. The Paranapanema system is chosen like case study and treats aspects tied to hydrological series, that constitute the main input of optimization process. Different objective functions performance are analyzed for the hydropower optimization. It analyzes rules f
Publicado em: 2001