Fuel Conservation
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Simulação computacional de dispositivos de mistura em câmara de combustão para gases de carbonização
Resumo O carvão vegetal proveniente de florestas plantadas é uma fonte de energia renovável utilizada na siderurgia do Brasil, todavia, em sua produção há liberação do gás de pirólise, que pode ser considerado um gás com baixo poder calorífico inferior. A sustentabilidade da produção de carvão vegetal tem demandado a queima destes gases, poden
Ciênc. Florest.. Publicado em: 30/09/2019
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2. Simulação computacional de escoamentos reativos com baixo número Mach aplicando técnicas de refinamento adaptativo de malhas / Computational simulation of low Mach number reacting flows applying adaptive mesh refinement techniques.
It is the main goal of the present work to extend a numerical methodology based on both the use of an adaptive mesh refinement technique (AMR) and the use of a multistep, implicit-explicit time-step strategy (IMEX) to applications involving low Mach number reactive flows. Originally developed for incompressible flows, the Eulerian formulation of that methodo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/06/2012
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3. Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting
Abstract: Rockets are powered by composite solid propellant, which is a heterogeneous system consisting of solid oxidizer and metallic fuel dispersed in a polymeric fuel binder matrix. The slurry casting technique under vacuum/gravity condition is well-established for performing a different class of large sized case bonded rocket motors. During propellant ca
J. Aerosp. Technol. Manag.. Publicado em: 2012-06
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4. Serrapilheira aplicada como biomonitor na avaliação do bosque urbano do Instituto de Pesquisas Energéticas e Nucleares, São Paulo,SP / Litterfall as biomonitors applied the evaluation of urban forest of the Nuclear and Energy Research Institute, São Paulo, SP
Several processes are considered responsible for ecosystems maintaining. Among them we can highlight mineral cycling that corresponds to the cycle of chemical elements that flow between the biotic compartments, leaves and litterfall, and abiotic, atmosphere and soil. These chemical elements accumulate of the active form through the absorption in the tissues
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/11/2011
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5. Remediation of soils contaminated by diesel fuel using a system of washing with microemulsion / Remediação de solos contaminados com óleo diesel utilizando um sistema de lavagem com microemulsão
The underground reservoirs of fuel retailing system represent an environmental threat, because once in bad conservation, these tanks allow fuel leakage and infiltration. For soil contaminated with fuel, such as diesel oil, the present study introduces the microemulsion systems used by the method of washing. In tests carried out in column with a sample of san
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/02/2011
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6. O Protocolo de Kyoto e o mercado de crédito de carbono: estudo de caso das emissões de gases de efeito estufa da fábrica de combustível nuclear pertencente às Indústrias Nucleares do Brasil no ano de 2008 / The Kyoto Protocol and the carbon credit market: case study of emissions of greenhouse gases from nuclear fuel factory belonging to the Nuclear Industries of Brazil in 2008
This dissertation discusses issues related to intensification of climate change by anthropogenic causes for the evolution in use of natural resources, innovations in production processes, economic, social, cultural, political and especially environmental. Approaches marketing of carbon credits through projects of Clean Development Mechanism (CDM), one of the
Publicado em: 2010
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7. Modelagem e controle de microturbina a gás do tipo split-shaft. / Modeling and control of slip-shaft gas microturbine.
The objective of the present work is the development of the model of a split-shaft micro gas turbine with feed back control system. A bibliographical review of the works on control of gas turbines indicated that there are very few works dealing this type of gas turbines. The model was developed starting from the basic geometry of the turbine and applying the
Publicado em: 2010
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8. Análise dos eventos de aceleração dos motores e dissipação de energia na fase de descida das aeronaves Boeing 737NG da VRG Linhas Aéreas
Esta dissertação propõe um método de análise dos eventos de aceleração dos motores e dissipação de energia através do uso dos freios aerodinâmicos na fase de descida das aeronaves Boeing 737 NG da VRG Linhas Aéreas, baseando-se nos conceitos de energia, de aproximações em descidas contínuas e desenho dos procedimentos de chegadas, revisando as
Publicado em: 2010
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9. Metais pesados e micronutrientes no solo e em folhas de Brachiaria decumbens às margens de rodovias / Heavy metals and micronutrients in soil and in leaves of Brachiaria decumbens on the margins of highways
The generation of various wastes, has become alarming in light of their growing volume and their disposal to form inappropriate, especially in soil. One of the characteristics of such waste is the possibility of being contaminated by heavy metals. The Fuel obtained the refining of oil, widely used in automobiles, are usually enriched with toxic elements. The
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2009
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10. NUMERICAL INVESTIGATION OF AMINE BASED ABSORPTION PROCESSES FOR CARBON DIOXIDE CAPTURE IN CCS PROJECTS / INVESTIGAÇÃO NUMÉRICA DO PROCESSO DE SEPARAÇÃO DE DIÓXIDO DE CARBONO POR ABSORÇÃO COM AMINA PARA APLICAÇÃO EM PROJETO DE ARMAZENAMENTO DE CARBONO DE (CCS)
Absorption is a process where the components of a gaseous stream are separated through the use of a liquid solvent. The process may be simply physical or be followed by a chemical reaction. In industry, one of the most important absorption processes is the removal of carbon dioxide (CO2), by using an aqueous solution of monoethanolamine (MEA), from flue gase
Publicado em: 2009
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11. AVALIAÇÃO DA SUSTENTABILIDADE BIOFÍSICA DO SOCIOECOSSISTEMA SÃO LUIS, ATRAVÉS DO ÍNDICE PEGADA ECOLÓGICA. / EVALUATION OF SUSTAINABILITY BIOPHYSICS SÃO LUIS SOCIOECOSYSTEMIC, THROUGH THE ECOLOGICAL FOOTPRINT CONTENTS
The 7,4 billion hectares of lands ecologically productive available for human use are decreasing in an abrupt way, since last century and, more intensely, in the last decades, mainly due to the significant increase of the world human population and the consumption produced by that. From this fact, the concept of sustainability began to be part of the scienti
Publicado em: 2008
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12. Experiment and numerical simulation on the performance of a kw-scale molten carbonate fuel cell stack
A high-temperature molten carbonate fuel cell stack was studied experimentally and computationally. Experimental data for fuel cell temperature was obtained when the stack was running under given operational conditions. A 3-D CFD numerical model was set up and used to simulate the central fuel cell in the stack. It includes the mass, momentum and energy cons
Brazilian Journal of Chemical Engineering. Publicado em: 2007-12