Calorific Value
Mostrando 25-36 de 50 artigos, teses e dissertações.
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25. Energetic use of wood waste in one center for the production of red ceramics in São Paulo State / Uso energético de resíduos madeireiros em um pólo de produção de cerâmicas vermelhas do Estado de São Paulo
The use of forest biomass is an important alternative of renewable energy source, economic, technical and environmentally viable, fighting for space with other energy sources, more expensive or non-renewable, such as natural gas, electricity, diesel and LPG. Within the industrial sector, biggest consumer of biomass energy, the segment of red ceramics represe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2012
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26. Potencial da extraÃÃo de Ãleo de peixe para produÃÃo de biodiesel / Potential extraction of fish oil for biodiesel production
Energy issues have been discussed intensively in the search for alternative energy sources, environmentally friendly and sustainable, since the prospect of depletion of fossil fuel reserves are eminent, thus reviving attention to alternative energy sources, among them, biofuels. Fish oil shows up as an alternative technology for the recovery of waste from pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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27. Caracterização de biomassas brasileiras para fins de aproveitamento energético / Characterization of brazilian biomasses for energy recovery
New energetic alternatives have been the subject of discussion about conservation of natural resources. Such discourses are based mainly on reducing emissions of greenhouse gases and other pollutants, caused mostly by the use of fossil fuels, major source of energy today. In view of the applicability of biomass as energy input, this paper presents an experim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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28. Qualidade da madeira de Eucalyptus para a produção de carvão vegetal / Wood quality of Eucalyptus for charcoal production
The present study aimed to determine the properties of wood and charcoal from different clones of Eucalyptus spp. Six clones at 7.5 years old were evaluated and the samples were from a clonal test of a forestry company, located in the city of Lassance, Minas Gerais, Brazil. For wood, basic density, heart/sapwood ratio, morphological analysis of fibers and po
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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29. Chitosan as flocculant agent for clarification of stevia extract
Stevia is used as a sweetener due to its low calorific value and its taste, which is very similar to that of sucrose. After extraction from dried leaves, stevia extract is dark in colour, and therefore needs to be whitened to increase acceptance by consumers. In this study we tested chitosan, a cationic polyelectrolyte, as flocculant agent for the whitening
Polímeros. Publicado em: 30/10/2012
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30. Caracterização e viabilidade econômica do bagaço de malte oriundo de cervejarias para fins energéticos / Characterization and economic viability of bagasse coming from malt beer for energy purposes.
This work aimed to study the energy capacity of the cake originating from malt beer at different moisture levels for energy, through description and analysis of economic viability. Sample collection was made in a company located in the city of João Pessoa-PB. Physical and chemical analysis were carried out to determine the chemical composition, where it was
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2011
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31. Poder calorífico e análise elementar de pneus automobilísticos inservíveis e de frutos da macaubeira
É certo que o sistema de produção industrial mundial gera muito resíduo os quais em grande parte, são lançados no meio ambiente. Entretanto, muitos deles podem se prestar para geração de energia ou outras aplicações. Esse é o caso da indústria de borracha aplicada à produção de rodados de veículos automotores. Não menos importante, desponta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2011
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32. Medidas da emissão de poluentes e da eficiência na combustão assistida do glicerol residual de biodiesel. / Measurements of emissions and fuel efficiency of the assisted residual glycerol biodiesel.
With increased global production of biofuels in particular biodiesel, an excess of glycerol is being generated worldwide. This has caused a sharp drop in the price of this compound in the world market. Much thought has been given to a destination for this residue, since no one can lay it in the environment and one of the alternatives be to use would its calo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2010
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33. Use of Jatropha oil methyl ester and its blends as an alternative fuel in diesel engine
Biomass derived vegetable oils are quite promising alternative fuels for agricultural diesel engines. Use of vegetable oils in diesel engines leads to slightly inferior performance and higher smoke emissions due to their high viscosity. The performance of vegetable oils can be improved by modifying them through the transesterification process. In the present
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-09
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34. Análise estatística do efeito da pressão na carbonização da madeira de Eucaliptus grandis
Brazil is the largest producer and consumer of charcoal with 75% for the steel industry. Carbonization processes are usually difficult to control craft technologies and offering relatively low mass yields. The average values are often admitted between 18 and 25%. New technologies are being developed to improve these numbers. Pyrolysis under pressure is one s
Publicado em: 2009
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35. Utilização de linter hidrolisado como fonte de energia
So as to obtain linter from cotton seeds originating from the chemical delinting process, diluted sulfuric acid was used. This was mixed with cotton seeds originating from the ginning process. The need for removal of the linter remaining on the cotton seeds facilitates sewing as this allows for adequate flow, and so avoids an excess of seeds being placed in
Publicado em: 2009
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36. Study of the chemical behavior during the ring formation of clinker in cement plant. / Estudo do comportamento quÃmico durante a formaÃÃo de anÃis de clÃnquer em fÃbrica de cimento.
The formation of thick collages in firing zone furnace of clinker in cement plants, called clinker ring, is a phenomenon that creates economical and environmental disorders. To remove the clinker ring it is necessary to cool up the oven for 24 hours cutting it with a breaking machine. This process is dangerous and highly cost-consuming, since the furnace fai
Publicado em: 2009