Boiler Efficiency
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. THERMAL BEHAVIOR OF FOREST BIOMASS WASTES PRODUCED DURING COMBUSTION IN A BOILER SYSTEM
RESUMO Durante a queima da biomassa em sistemas industriais haverá a formação de resíduos contendo cinzas e carbono residual, cujo teor será variável em função da eficiência e dos parâmetros de operação das câmaras de combustão. A caracterização destes resíduos é ferramenta essencial para visualizar a sua potencialidade de reuso energético
Rev. Árvore. Publicado em: 23/09/2019
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2. STATSSCANDLEPLOT: A NEW WAY OF MONITORING OPERATIONAL PERFORMANCE INDICATORS
ABSTRACT Operational KPIs play an extremely important role in the process industry, aiding in decision making. However, they need to be reliably calculated to be representative. The present work presents a schematic methodology for the calculation of these KPIs, including techniques of steady-state detection, denoising, error propagation and sensitivity anal
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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3. 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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4. 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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5. SimulaÃÃo e avaliaÃÃo de um sistema de aquecimento solar de Ãgua utilizando balanÃo energÃtico / Simulation and evaluation of a system of solar water heating using energy balance
This work was developed at the State University of West of Paranà â UNIOESTE, campus de Cascavel and was aimed at developing a computer program to simulate and scale, optimally, a system of solar water heating. To determine the efficiency parameters of the system were installed three solar collectors of 1.05 m2 each, brand Pro Sol, coupled to a thermal res
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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6. CFD analysis of the pulverized coal combustion processes in a 160 MWe tangentially-fired-boiler of a thermal power plant
The strategic role of energy and the current concern with greenhouse effects, energetic and exergetic efficiency of fossil fuel combustion greatly enhance the importance of the studies of complex physical and chemical processes occurring inside boilers of thermalpower plants. The state of the art in computational fluid dynamics and the availability of commer
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12
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7. 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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8. 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
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9. Drying coffee spent ground in Cyclonic Dryer / Secagem da borra de cafà em secador ciclÃnico
Due to trade liberalization, competitive scenery was created in relation to the exigencies with the environment preservation. Industries began to worry about the waste treatment and by-products generated by the in activity. The coffee spent ground, by-product of the coffee industry, previously discarded without commercial value, is now seen as solid fuel, a
Publicado em: 2009
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10. Reduction efficiency prediction of CENIBRA's recovery boiler by direct minimization of gibbs free energy
The reduction efficiency is an important variable during the black liquor burning process in the Kraft recovery boiler. This variable value is obtained by slow experimental routines and the delay of this measure disturbs the pulp and paper industry customary control. This paper describes an optimization approach for the reduction efficiency determination in
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
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11. Avaliação termoeconomica do sistema de cogeração da usina vale do rosário
In the present work, a cogeneration system of a sugar-alcohol cane mill isevaluated. Using the Exergetic Cost Theory, a thermoeconomic analysis is made for three crops, corresponding to the years of 1996, 1997 and 1998. Previusly, na energetic and exergetic analysis was made, determining the first and second law equipment s efficiencies and also some perform
Publicado em: 1999