Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Planejamento Energético"”.
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Líquido iônico em matriz termorrígida como eletrólito para utilização em altas temperaturas
Flexible epoxy network loaded with high amount of ionic liquid 1-decyl-3- methylimidazolium bromide ([DMIM]Br) has been reported by using a mixture of polyol amine as curing agent. The ionic liquid presents good electrochemical response even at 170 °C, as no evidence of redox reactions was …
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Metodologia e aplicação da inserção de geração fotovoltaica distribuída e armazenamento de energia em sistema elétrico de potência
… as análises realizadas utilizou-se o software de planejamento energético, Homer, e o PSS ADEPT para o cálculo do fluxo de potência. Os cinco alimentadores de distribuição analisados são localizados na região metropolitana de Belo Horizonte, MG da concessionária CEMIG. Foi também analisado o índice …
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A inserção do biodiesel na matriz energética nacional: aspectos socioeconômicos, ambientais e institucionais
The work has its core guided by the atmosphere of interest in the expansion of the production and use of the biofuels in Brazil, particularly the biodiesel. It aims to contribute for the apprehension of the elements that guide the development of the renewable energy sources. It makes an evaluation …
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Etanol versus bioeletricidade: aplicação dos conceitos de fronteira eficiente de Markowitz para o aproveitamento do bagaço residual do setor sucroenergético
This work analyzes the competition for bagasse in the lignocellulosic ethanol and electricity productions using the modern portfolio theory developed by Markowitz, as the sector can further diversify its production, reducing risks and increasing returns. After literature review, about sugar-energy …
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Análise da viabilidade do uso de biogás como fonte energética na cadeia produtiva de frango de corte na Zona da Mata de Minas Gerais
… pode contribuir para um melhor desempenho energético nas operações que se desenvolvem na cadeia produtiva de frango de corte. Por meio da biodigestão anaeróbia é possível converter a cama de frango em biogás, cujo principal constituinte é o gás metano. Além do biogás pode-se obter também o …
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Apoio à seleção de materiais resistentes à corrosão por técnicas eletroquímicas
As important fields of oil production in Brazil are maturing, more water produced will be generated by the oil industry. The water produced can be much more aggressive in terms of corrosion than sea water, presenting high levels of chloride and carbon dioxide. The water produced in addition to …
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Sobrecustos e atrasos de megaprojetos de energia: quando maior é pior
Energy system success has historically been associated with the perception that megaprojects, projects whose investment exceeds one billion dollars, produce economies of scale. Planners use to believe that systems should be composed of a few, but large, units of supply and distribution. In view of …
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Estratégias cooperativas para o mercado brasileiro de gás natural: uma aplicação do método de Shapley
The Brazilian natural gas market was developed based on periods of significant increase in the offer, which followed investments in midstream infrastructure, as well as policies to stimulate the consumption. Recently, with the discovery of the pre-salt layer and growth of the natural gas production …
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Emissões de gases fluorados causadores de efeitoestufa: desenvolvimento e análise de cenários para o Brasil até 2050
Fluorinated gases are fluids with high global warming potential. Although, presently less than 2% a year, the total global emissions of these compounds have been growing sharply in the last years. This study aims to elaborate scenarios for fluorinated greenhouse gas (HFC, PFC and SF6) emissions in …
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Análise do potencial de geração distribuída de energia solar fotovoltaica nos setores bancário, de educação básica e postos de gasolina
Photovoltaic solar energy has been growing significantly in the world, and its expansion has taken place both via large centralized plants and via distributed generation. This work, through a methodology that included the sampling of more than 1,100 rooftops spread across Brazil, estimated the …
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Avaliação da torrefação e densificação de resíduos agrícolas no Brasil
Brazil is one of the major agricultural producers in the World. This large-scale production leads to a vast amount of residues left in the field, which ultimately carry a considerable potential to produce energy vectors. Nonetheless, the energy usage of this resource face technical and logistical …
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Bridging the energy divide and securing higher collective wellbeing in a climate-constrained world
In spite of the impressive gains in available energy over the last two centuries, the associated benefits remain unevenly distributed. Bridging this divide only adds to the already daunting challenge of securing climate stabilization. This thesis examines the potential incompatibility between these …
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Proposta metodológica para avaliação da demanda residencial de energia elétrica através do desenvolvimento de uma curva de carga horária
The growing electricity demand combined with the emerging power generation technologies have increased the importance of electric power demand models for the electric planning. In that way, demand side management (DSM) measures are being used more often, in order to guarantee de safety and …
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Caracterização microestrutural em função da temperatura de serviço de tubos de aços HP-Modificados ao Nb e Ti envelhecidos em fornos de reforma a vapor
Hydrogen is produced in reforming furnaces inside tubes, which are currently manufactured with HP-Nb and HP-NbTi steels. The service temperature of these tubes causes different degrees of metallurgical aging along their lengths. The purpose of the present work is to characterize the aging of these …
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A viabilidade ambiental de usinas hidrelétricas e a aplicação da avaliação ambiental estratégica no Brasil
Brazil has a predominantly renewable origin electricity generation matrix, with hydrogeneration accounting for about 69% of the supply. This thesis promotes hydropower projects in Brazil environmental licensing procedure critical assessment, with the aim of identifying and assessing possible …
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Potencial técnico e econômico para a produção de Fischer-Tropsch Diesel a partir de biomassa (FT-BTL) associada à captura de carbono no Brasil
In order to deal with the criticality of diesel fuel supply, due to a refining system incapable of attending the growing demand and the ever more restrictive specifications in act, the deployment of high quality biomass based diesel stands relevant to the national framework. This study aims to …
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Caracterização do resíduo pós-industrial de PVDF visando potencial utilização via reciclagem primária
Poly(vinylidene fluoride) (PVDF) is a polymer widely used by the oil & gas industry due to its special features that make it suitable for this application, like imperviousness to liquid and gases, good compatibility with most chemicals and good stability in high pressure/temperature. As a recycling …
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Cenários de consumo de energia domiciliar no estado do Rio de Janeiro: a contribuição da eficientização para uma reflexão sobre a pobreza energética
Energy efficiency has impacts in many areas, such as economy, environment and the quality of life enjoyed by individuals, as well as improved security of energy supply. In Brazil, there are already some energy efficiency programs to guide and encourage the practice of efficiency, including the …
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Avaliação de ciclo de vida de embalagens plásticas de óleo lubrificante: um estudo de caso
This thesis uses life cycle assessment methodology to evaluate the environmental impacts of lubricant oil plastic containers (LOPCs), from production to final disposal. Various scenarios are compared which use different combinations of quantities of LOPCs destined to recycling, to incineration with …
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Utilização de resíduos de madeira e lenha como alternativas de energias renováveis para o desenvolvimento sustentável da região nordeste do estado do Rio Grande do Sul
Para alcançar o desenvolvimento sustentável a energia tem um papel chave, sendo responsável por boa parte da poluição em todas as atividades humanas. O uso de energias renováveis é altamente desejável quando se quer reduzir ou eliminar essa poluição sem perder a oportunidade de desenvolvimento de …
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