Wood Fuel
Mostrando 1-12 de 24 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. Evaluation of Biomass Properties for the Production of Solid Biofuels
ABSTRACT The efficient use of biomass as fuel requires prior knowledge of the composition and properties of the material in order to be able to develop technologies for its efficient combustion while ensuring that emissions of pollutants remain within acceptable limits. Therefore, the analysis of the physical and chemical properties of these materials is ess
Floresta Ambient.. Publicado em: 05/09/2019
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3. Potencial utilitário da vegetação lenhosa em área de Caatinga no estado de Pernambuco, nordeste do Brasil
Resumo Este estudo teve como objetivo a análise da relação entre a população humana situada no Assentamento Olho d´Água do Félix, Caruaru-PE e as espécies florestais conhecidas e utilizadas, de forma a testar a hipótese de aparência ecológica. Foi realizado um inventário da vegetação arbórea através de parcelas amostrais de 400 m2 nos fragme
Ciênc. Florest.. Publicado em: 30/05/2019
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4. Comparison of carbon sequestration potential in agricultural and afforestation farming systems
In the last few decades, many forests have been cut down to make room for cultivation and to increase food or energy crops production in developing countries. In this study, carbon sequestration and wood production were evaluated on afforested farms by integrating the Gaussian diameter distribution model and exponential diameter-height model derived from sam
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-04
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5. Mudanças nos uso e preços de terras do Estado de São Paulo - período de 1995 a 2010 / Changes in land use and farmland prices in São Paulo State: from 1995 to 2010
This work has examined major changes in land occupation in different regions of São Paulo State to determine major vectors of the observed changes in farmland prices, between 1995 and 2010. This period encompasses both the period of retraction and deregulation of the sugarcane sector, after the extinction of Proálcool program, and the new stage of investme
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/12/2012
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6. MicrogeraÃÃo de energia elÃtrica com gÃs de sÃntese de um gaseificador concorrente utilizando ItaÃba mazilaurus / Microgeneration of electricity with syngas from a downtraft gasifier using ItaÃba mazilaurus
The use of biomass as energy source is one of the most promising, because it contributes to reduce emissions of carbon dioxide in the atmosphere and allow the decentralized energy generation. Gasification is a technology of processing biomass energy into a gaseous biofuel of low calorific value. The gas can be used in Otto cycle engine for power generation i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/09/2012
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7. 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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8. Biomassa e energia
Biomass was the dominating source of energy for human activities until the middle 19th century, when coal, oil, gas and other energy sources became increasingly important but it still represents ca. 10% of the worldwide energy supply. The major part of biomass for energy is still "traditional biomass" used as wood and coal extracted from native forests and t
Quím. Nova. Publicado em: 2009
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9. Construção de um modelo integrado de manejo de recursos para a sustentabilidade: o uso energético da madeira / An integrated framework construction of resource management for sustentability: the wood fuel use
O presente trabalho objetivou desenvolver uma proposta de manejo de recursos tendo como referência empírica o uso da madeira energética. Sendo orientado pela ciência clássica do manejo de recursos apoiada pelos princípios, pressupostos e hipóteses das ciências biológicas, a proposta da pesquisa consistiu em superar as vulnerabilidades teóricas dos
Publicado em: 2009
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10. Avaliação do potencial de produção e exportação de pellets combustivelno polo florestal da região Sul do Brasil / Assessment of the potential of woodpellets production and export in the forestry pole of Brazilian southern region
Pellets is a solid biofuel that has been fairly used in developed countries of temperate climate. In recent years its consumption has increased for residential heating and electricity and thermal generation in co-firing plants, particularly in Europe, that is worldwide the largest pellets market. Brazil has good potential to be a supplier in the emerging pel
Publicado em: 2009
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11. Controle e avaliação de um conjunto gaseificador-combustor de fluxo concorrente, utilizando como combustível a biomassa de lenha de eucalipto / Control and evaluation of a set gasifier-combustor with co-current flow using eucalyptus wood as a fuel
Recently, concern has grown considering environmental issues associated with the preservation of natural resources with the intention of improving the present and future quality of life. Biomass gasification shows to be a sustainable technology for power generation with low greenhouse gas emissions. One of the problems by using the gasifier for air heating p
Publicado em: 2008
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12. 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