Electric Power Trade
Mostrando 1-10 de 10 artigos, teses e dissertações.
-
1. New concept of space radiator with variable emittance
A new concept of space radiator of variable emittance for satellite thermal control is presented. The radiator is composed of two stages which exchange heat through radiation between finned surfaces covered with variable emittance coatings, whose emissivity is increased with temperature. Under cold conditions the radiative heat coupling between the stages is
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12
-
2. Multiobjective optimization techniques applied to engineering problems
Optimization problems often involve situations in which the user's goal is to minimize and/or maximize not a single objective function, but several, usually conflicting, functions simultaneously. Such situations are formulated as multiobjective optimization problems, also known as multicriteria, multiperformance or vector optimizations. Because multiobjectiv
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
-
3. Basic risk concepts in electric power trade in Brazilian Electric Sector and the Governmental performance. / Conceitos básicos de risco na comercialização de energia elétrica no Setor Elétrico Brasileiro e a atuação governamental.
Buscou-se refletir de que forma as decisões governamentais afetam o setor energético e como os agentes reagem ao modelo e à instabilidade das regras vigentes. O estudo compreende uma breve revisão da estrutura do atual modelo e dos principais riscos que envolvem a comercialização de eletricidade. Partiu-se do pressuposto que o preço é o maior risco p
Publicado em: 2009
-
4. APROVEITAMENTO DA CASCA DE ARROZ EM UMA MICRO CENTRAL TERMOELÉTRICA AVALIAÇÃO DOS IMPACTOS ECONÔMICOS E AMBIENTAIS PARA O SETOR ARROZEIRO DO RIO GRANDE DO SUL
The rice husk production in Rio Grande do Sul, state responsible for more than half of this cereals country production, leads to the need of an appropriate environmental management in view the impacts produced by this residue in the environment, whether they be local or global, like greenhouse effect impacts. Therefore, a rational utilization of this energet
Publicado em: 2009
-
5. Artificial neural networks applied on the forecast of the spot market prices for electricity. / Redes neurais artificiais aplicadas na previsão de preços do mercado spot de energia elétrica
A comercialização de energia elétrica no Brasil e no mundo sofreu diversas modificações nos últimos 20 anos. Com o objetivo de alcançar o equilíbrio econômico entre oferta e demanda do bem chamado eletricidade, os agentes deste mercado seguem as regras definidas pela sociedade (governo, empresas e consumidores) e também as leis da natureza (hidrolo
Publicado em: 2009
-
6. Conflito, consenso, democracia e capitalismo em estados periféricos : o processo de privatização do setor elétrico no Brasil e na Argentina
This thesis analyzes the political and economical arguments that furnished a broad consensus for the implementation of the structural adjustments in the 1990s, amongst them the privatization programme of the electrical energy sector in Brazil and Argentina. It is considered whether the restructuring of the electric section accomplished the presuppositions on
Publicado em: 2009
-
7. A trade-off study of a bleedless and conventional air conditioning systems.
The objective of this work is to present a trade-off study between aircraft air conditioning systems based on conventional technology (Engine Pneumatic Bleed based) and the proposed bleedless architecture, based on the MEA (More Electric Aircraft) and Bleedless Engines concepts. The pneumatic bleed system components are thus eliminated and a dedicated compre
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2008
-
8. The consolidation of the transmission and distribution networks in the brazilian electric system in the face of the state s interrence with the propiety / A consolidação das redes de trasmissão e de distribuição do sistema eletrico brasileiro em face da intervenção do Estado na propiedade
The restructuring and privatization of the Brazilian electric sector started in 1995, has redefined the State?s role within this sector that now starts to play the regulating and controlling functions instead of those of a contractor agent. With the non-intervention, the State has become the responsible for regulating, supervising and controlling the granted
Publicado em: 2007
-
9. Uma metodologia de planejamento da expansÃo da transmissÃo baseada em trade-off e indicador de mÃrito econÃmico
Since the last ten years the electrical industry have been experiencing an intensive restructuring process worldwide. This process varies from country to country in accordance with their characteristics. However a common objective has been identified: the increase in terms of efficiency through the introduction of competition in the energy production and tra
Publicado em: 2000
-
10. Otimização da operação de fornos eletricos de arco direto
An optimisation model for the operation of direct arc electric furnaces that use scrap as the main raw material is presented in this thesis. A knowledge of the electric circuit to which the furnace is connected, as well as the design and operational characteristics of the equipment, are required for the modelling. A backward dynamic programming routine is em
Publicado em: 1998