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Showing 1 to 13 of 13 for “"Energy matrix"”.
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Product Basis Set Variational Calculations of Triatomic Rovibrational Energy Levels and Wavefunctions
If both the potential energy surface of a molecule and trial functions for a variational calculation are expanded in products of internal coordinate functions, the Hamiltonian matrix may be speedily built because all required integrals are one-dimensional. New methods, especially for calculating …
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Perfil do setor energético no Brasil
… Apparent way, the country has advantages in its energy matrix when compared to other countries, mainly due to the large share of renewable sources 39.4% and the use of hydroelectricity 11.5%, and other clean sources. The purpose of this work focuses on the energy profile of Brazil from its …
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Estimativa de vida residual de rotores de turbinas a vapor expostos aos mecanismos de dano por fluência e fadiga
… plants represent approximately 25% of Brazil’s energy matrix and operate, most of the times, in cyclic regime, in order to supply seasonal demand peaks. This operational behavior may lead in a series of non predicted damages and losses, because most of the plants are designed to operate in base …
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Ligas à base de ferro-titânio para aplicações de armazenamento de hidrogênio
… last decades, some countries have changed their energy matrix motivated by environmental and economic issues. Hydrogen (H2) stands out as a source of clean energy and your storage in the form of hydrides in metal alloys is promising. Among these, titanium-iron alloys (TiFe) present low cost and …
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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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Cogeração no setor sucroalcooleiro a partir do reaproveitamento energético da biomassa do bagaço de cana
This study aims to evaluate the energy cogeneration from sugarcane sector as the main alternative to Brazilian energy matrix. Through the case study Distillery Japungu Agroindustrial S/A, it is possible to observe the main advantages in investment for more powerful equipment with lower specific …
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Methodology for the development of hydroelectric power plants
… promoted by Governments as part of their energy matrix, but its development is constrained by the difficulty of addressing location particularities, including technical features such as geology or hydrology, and institutional features such as social acceptance, environmental constraints …
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Análise de estabilidade para inversores LCL conectados à rede elétrica baseada em expressões analíticas e estimativas de impedâncias no domínio síncrono DQ
The diversification in the energy matrix has been driving the emergence of new forms of electricity generation, often integrated into the grid through the inverter. The control of this device is usually designed without considering the impact of the connection with the grid. One approach to assess …
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Low Voltage Ride-Through for Indirect Matrix Converter Based Open-End Winding Drives
… the DC bus capacitor provides an inbuilt energy storage mechanism, which could be used for ride-through operations during fault conditions. In some applications like wind turbines, the presence of large capacitive and reactive components in the drive could be a drawback due to lesser …
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Alternativa para redução do consumo de combustível fóssil em uma fábrica de celulose kraft de eucalipto
Tem aumentado grandemente os esforços para desenvolvimento de novas fontes de energia proveniente de recursos renováveis. Grandes esforços têm sido realizados, em fábricas de celulose, para que, num futuro próximo, possam ser incorporadas nestas empresas operações de biorefinarias, visando produção …
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Advancements in Monte Carlo many body methods
… the operational cost to compute the k-order energy correction with many-body perturbation theory (MBPT) is O (n k+3 ), with n being proportional to the molecular size. Additionally, many-body methods are typically cast into complex series of dense matrix-matrix multiplications, which is …
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Propuesta de alternativa de matriz energética del sector transporte a partir de la cuantificación de emisiones de “GEI” en el departamento de Boyacá
El transporte ha sido parte central de la historia económica de la humanidad al igual que lo ha sido la energía. Un sistema de transporte eficiente y sostenible es también sinónimo de desarrollo económico y bienestar, así como un termómetro cualificado sobre el grado de avance de una sociedad. El …
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A Framework for Interoperability on the United States Electric Grid Infrastructure
… to interconnect intermittent distributed energy resources (DERs), portable electric vehicles (EVs), and load-altering home automation devices, that create bidirectional power flow or stochastic load behavior. In order for this grid of the future to effectively embrace the high penetration …