Steam Generation
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. INCREASED ENERGY COGENERATION IN THE SUGAR-ENERGY SECTOR WITH THE USE OF SUGARCANE STRAW, ELECTRIFICATION OF DRIVES, AND HIGH-DRAINAGE ROLLERS IN THE EXTRACTION
ABSTRACT The sugar-energy sector stands out in the production of electrical energy in the Brazilian energy matrix. The updating of Law 9,427 allowed increasing the limit of power injected in the transmission or distribution systems of existing projects from 30 to 50 MW, encouraging studies of expansion and/or implementation of new cogeneration projects. This
Eng. Agríc.. Publicado em: 2020-04
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2. Multi-criteria Selection of Distributed Mini Generation Systems Using Rice Husk
ABSTRACT This paper presents a multi-criteria methodology to support decision making for management and selection of distributed mini generation sources (GD) using rice husk. Considering the potential of residual biomass, the developed model is based on the Analytic Hierarchy Process (AHP) method to evaluate the main technological arrangements of generation
Braz. arch. biol. technol.. Publicado em: 22/10/2018
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3. Combined Cycle Performance Evaluation and Dynamic Response Simulation
ABSTRACT Power plants operating in combined cycle present higher thermal efficiency (over 60%) and increased power generation when compared to traditional simple cycles, such as gas or steam turbines operating alone. Considering that the power plant evaluated in this paper is already operational, a further development concerning to the power plant control sy
J. Aerosp. Technol. Manag.. Publicado em: 2016-12
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4. REUSE OF DAIRY WASTEWATER TREATED BY MEMBRANE BIOREACTOR AND NANOFILTRATION: TECHNICAL AND ECONOMIC FEASIBILITY
Abstract This study evaluated the technical and economic feasibility of membrane bioreactors (MBR) followed by nanofiltration (NF) for dairy wastewater treatment in order to reuse the treated effluent. It was observed that the MBR efficiently removed the organic matter and color of the feed effluent; however, due to the high concentration of dissolved solids
Braz. J. Chem. Eng.. Publicado em: 2015-09
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5. Estudos de processos avançados em geração termelétrica utilizando leitos fluidizados consumindo biomassa / Advanced studies on power generation processes based on fluidized beds consuming biomass
A study aiming maximizing the efficiency of an advanced combined power generation process has been developed. The process applies a pressurized fluidized bed boiler consuming sugar cane bagasse fed as slurry. The generated steam is diverted to a reheated Rankine cycle while the gas exiting the boiler is directed to a gas turbine process. Many assumptions hav
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2012
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6. Análise da influência de variáveis operacionais de um sistema de trigeração sobre o desempenho termodinâmico e a distribuição das utilidades / Analysis of operational variables in a trigeneration system and their influence over thermodynamic performance and distribution of utilities
In this work a trigeneration system, simultaneous production of power, heat and cooling using only one energy source, was analyzed, aiming at a better energetic efficiency of the system, showing the influence of some operating variables of the process on the utilities generated and the efficiency of the overall system. In this study the influence of the comp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2012
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7. Efeito do teor de umidade sobre o pré-tratamento a vapor e a hidrólise enzimática do bagaço de cana-de-açúcar
The effect of moisture content in the steam treatment and enzymatic hydrolysis of sugarcane bagasse was evaluated. Steam treatment was perfomed at 195-210 ºC for 4-8 min using cane bagasse with moisture contents in the range 16-100 wt% (dry basis). Increased moisture contents not only had a positive influence in recovery of main cane biomass components but
Quím. Nova. Publicado em: 2012
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8. Avaliação da viabilidade de implementação de ciclo combinado em uma usina termelétrica / Evaluation Viability of combined cycle implementation in a thermo power plant
Grande parte das termelétricas brasileiras a gás natural construídas recentemente foi projetada para operar em ciclo combinado. No entanto, em uma primeira etapa, estas termelé-tricas são colocadas em operação em ciclo aberto. Dos vários tipos de ciclo combinados, o ciclo combinado Brayton/Rankine é o mais desenvolvido e amplamente utilizado. O trab
Publicado em: 2011
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9. Estudo inicial da adaptação de uma usina termoelétrica para combustão de hidrogênio / Initial study of the adaptation of a thermoelectric plant for hydrogen combustion
O presente trabalho apresenta o estudo para a adaptação de uma usina termoelétrica a carvão pulverizado para a utilização de hidrogênio como combustível. São apresentadas as metodologias de cálculo das eficiências da caldeira, do ciclo térmico e da unidade, além da nova configuração sugerida para o ciclo adaptado. Nesta nova configuração o h
Publicado em: 2010
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10. Thermodynamic simulation of biomass gas steam reforming for a solid oxide fuel cell (SOFC) system
This paper presents a methodology to simulate a small-scale fuel cell system for power generation using biomass gas as fuel. The methodology encompasses the thermodynamic and electrochemical aspects of a solid oxide fuel cell (SOFC), as well as solves the problem of chemical equilibrium in complex systems. In this case the complex system is the internal refo
Brazilian Journal of Chemical Engineering. Publicado em: 2009-12
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11. Hydrogen from biomass gas steam reforming for low temperature fuel cell: energy and exergy analysis
This work presents a method to analyze hydrogen production by biomass gasification, as well as electric power generation in small scale fuel cells. The proposed methodology is the thermodynamic modeling of a reaction system for the conversion of methane and carbon monoxide (steam reforming), as well as the energy balance of gaseous flow purification in PSA (
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
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12. Integração das principais tecnologias de obtenção de etanol através do processamento de celulose (2ª geração) nas atuais usinas de processamento de cana-de-açúcar (1ª geração). / Integration of ethanol production technologies throw the cellulose processing (2nd generation) on existing sugar cane processing units (1st generation).
The demand for energy has been increasing due to world development. Renewable energy of biomass, biofuel and electric energy have an important role to assist this growth, due to sustainable development policies and to the pressure of global organizations. The main aim of this dissertation is to demonstrate that the integration of second-generation technologi
Publicado em: 2009