165 resultados para Optimização energética
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Pós-graduação em Engenharia Mecânica - FEG
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Pós-graduação em Engenharia Elétrica - FEB
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Pós-graduação em Engenharia Mecânica - FEG
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The reason of this work is perform a study about using of electrical energy to identify the opportunities through rational use of electrical energy. For that it was necessary perform an analysis of hired energy against consumption. Based in a guide of energy analysis were found the main consumers and verified the main problems, which generate excessive use of electrical energy in a plastic injection factory. It was also analyzed the painting line because there are some thermal equipment that use electrical energy. Based on the data obtained will be proposed ways to reduce the needless consumption and energy use of rationally and efficiently, in addition to re-evaluate the contracted demand based on the new policy of supplying and charging.It were also proposed thermodynamics solutions to reduce the energy consumed in thermal process
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This paper aims at comparing the national and international incentive policies in energy efficiency investment and presenting the main trends, measures adopted and economical and environmental results obtained, as well as possible improvements and expansions of these programs. This analysis is justified by the current moment, not only of the Brazilian Power Systems (SEB) but also of the global power systems with the constant increase of demand and depletion of natural resources implying in a need of a better use of them and of the power they generate, which directly affects the losses on the generation, transmission, distribution and consumption of energy, in addition to reducing the impacts on the environment. At last but not least, through this study it was possible to gleam not only at new possible ways for these programs, but also failures and inefficiencies that can be improved in the measures currently being used
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This paper addresses methods of reducing the electric energy consumption on residences by the means of constructive measures and replacement of electric devices. Analyzing their impacts on residential and national level based on data issued by IBGE (Brazilian Institute of Geography and Statistics) and PROCEL (National Program for Electricity Conservation).
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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Com o crescimento significativo da pecuária bovina brasileira houve o aumento de pesquisas e estudos que buscam animais cada vez mais precoces e produtivos. O presente trabalho é uma revisão de literatura com base em trabalhos que demonstram a eficiência da suplementação energética na maturação sexual de novilhas Nelore, visando a melhora da eficiência reprodutiva e antecipação da puberdade
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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Pós-graduação em Ciências da Motricidade - IBRC
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Pós-graduação em Engenharia Mecânica - FEG
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The objective of this work was the analysis of the energetic ethanol production systems using as source of carbohydrates, manioc, sugar cane and maize crops. The searches were carried from the field in the Paranapanema River Valley, state of Sao Paulo in the operations of cultivation and industrial processing of raw materials for analysis. The expenditure of energy concerning the agricultural part was made by the energy consumption of stage production of one hectare of sugar cane, cassava and corn, tillage and planting procedure, inputs, driving the crop, harvest, transport industry and energy draining. The expenditure of energy referring to the part was made by the industry energy consumption of stage processing of one tonne of sugar cane, cassava and corn, in the operations of disintegration / milling, hydrolysis / treatment of the broth, fermentation, distillation and maintenance of equipment. Under the system of agronomic production of raw materials, manioc presented an energy expenditure below that of sugar cane and maize (9,528.33 MJ ha-1; 14,370.90 MJ ha-1 and 15,633.83 MJ ha-1, respectively). For the ethanol produced, the operations of cultivation has consumed 1.54 MJ l-1 with manioc; MJ 1.99 l-1 with sugar cane, and 7.9 MJ l-1 with the corn. In the industrial processing of a ton of raw material, sugar cane presented an energy cost less than the cassava and maize (1,641.56 MJ t-1; 2,208.28 MJ t-1 and MJ 3,882.39 t-1, Respectively), however, showed a higher cost than when they related to ethanol produced (19.38 MJ l-1; 11.76 MJ l-1 and 11.76 MJ l-1, respectively). In the final energy balance for each megajoules of energy invested in sugar cane were required 1.09 MJ (9%), for each megajoules of energy invested in manioc were required 1.76 MJ (76%) and for each megajoules energy invested in maize were required 1.19 MJ (19%). Overall, it appears that the manioc consumes less energy than sugar cane and corn crops in the process of agribusiness obtaining ethanol.
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This research leads to a meta-analysis of scientific production in energy efficiency in industrial sectors, recorded in ten (10) leading journals in Administration and Engineering Production in Brazil, between 2001 and 2011. To this end, this scholarship was examined based on the following parameters: a) the total contribution and journal articles, b) methods used in studies, and c) the theoretical gaps to exploit. The diagnosis is that one infers: academic work in energy efficiency industries accounted for only twenty-nine (29) published articles, and only eight (8) have energy efficiency as a central theme of the work. Although the results still showed a rising trend in the number of publications since the last five (5) years analyzed showed 65.5% of all published files relating to energy efficiency. It contributes, therefore, the systematization of the academic production in the area of energy efficiency and business subsidies are provided for this field of research in Brazil.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)