Cogeneration System
Mostrando 13-24 de 35 artigos, teses e dissertações.
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13. Case Study: Economic analysis for natural gas operation of cogeneration system in buildings and facilities commercial and dwelling approach through system dynamics / Estudo de Caso: Analise econômica da utilização do gás natural em sistemas de cogeração aplicados a instalações prediais comerciais e residenciais Via Dinâmica de Sistemas
Cogeneration systems must increase the installed brazilian power generation capacity. It can also improve the reliability of the transmission system, using different energy sources in new power plants and enlarging the business opportunities for private capital in the brazilian market. Brazil presents expressive potential for distributed generation plants of
Publicado em: 2008
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14. Development of ammonia-water absorption refrigeration systems simulator and its application in a project of a system moved by exhaust gases of diesel engine / Aperfeiçoamento de um simulador de sistemas de refrigeração de absorção agua-amonia e sua aplicação para projeto de um sistema movido a gas de escape de motor diesel
This work shows the development of an ammonia-water absorption refrigeration system pre-existing simulation program, which uses diesel engine exhaust gases from a diesel-generator group as energy source. The project was implemented in four stages. An initial design of its components involved solely thermodynamic relations, and was based on the arbitration of
Publicado em: 2008
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15. Simulador para estudo de operação e análise econômica de um sistema de cogeração utilizando microturbina a gás natural em complexos residenciais
The present work consists on a study of a cogeneration system using natural gas microturbine simulator for technical and economical analyze. The residential environment was chosen for its favorable cogeneration system characteristics, because it presents a representative electrical demand, and also an expressive thermal demand. From the load side, the model
Publicado em: 2007
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16. ANÁLISE DO DESEMPENHO DE UM SISTEMA DE COGERAÇÃO COM UMA MICROTURBINA A GÁS NATURAL / PERFORMANCE ANALYSIS OF A GAS FIRED MICROTURBINE BASED COGENERATION SYSTEM
In this dissertation the performance of a cogeneration system was simulated using data obtained in tests of a natural gas fired 30 kW microturbine, operated during peak hours, and coupled to a heat recovery unit to generate hot water to be consumed in the showers of the PUC-Rio Gymnasium, together with a thermal reservoir to match the demand. Initially, the
Publicado em: 2007
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17. Analise termodinamica de um sistema de cogeração com gaseificação de licor negro / Termodynamic analysis of a cogeneration system with blak liquor gasification
The pulp and paper industries generate most part of energy for self consumption burning two different fuels: biomass and black liquor, which is more used than the first one. This industrial sector has been used cogeneration systems, to produce electric energy from the combustion of these fuels. In the last years an increase in the production of the industrie
Publicado em: 2007
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18. Protótipo de uma unidade com tri-geração de energia para utilizações remotas: aplicação de módulo secondutivo gerador termoelétrico
The generation for termoeletricity is characterized as a solid process of conversion of thermal energy (heat) in electric without the necessity of mobile parts. Although the conversion process is of low efficiency the system presents high degree of trustworthiness and low requisite of maintenance and durability. Its principle is based on the studies of termo
Publicado em: 2007
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19. Exergy analysis of thermal systems in a pulp and paper production process. / Análise exergética dos sistemas térmicos em um processo de produção de celulose e papel.
This work presents a comparative evaluation from thermodynamic performance view of thermal systems in a Kraft pulp and paper mill. The design information and the data of the industrial operation were collected for the current utility system and for the new system that has been buit. The exergy analysis is applied as the quantitative and qualitative evaluatio
Publicado em: 2007
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20. METODOLOGIA PARA DETERMINAÇÃO DO MERCADO POTENCIAL DE UM SISTEMA DE COGERAÇÃO COM MICROTURBINA PARA PRODUÇÃO DE ENERGIA ELÉTRICA E ÁGUA QUENTE / METHODOLOGY FOR DETERMINING THE POTENTIAL MARKET OF A MICROTURBINE BASED COGENERATION SYSTEM FOR ELECTRIC ENERGY AND HOT WATER PRODUCTION
O uso seqüencial de energia elétrica e energia térmica a partir da energia química do mesmo combustível tem sido estudado para melhorar o custo benefício de uma geração distribuída. O objetivo deste estudo é determinar o mercado potencial desta tecnologia na região de influência da concessionária local de energia elétrica. Para alcançar este o
Publicado em: 2007
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21. PERFORMANCE ANALYSIS OF THE CO-GENERATON POTENCIAL OF A 5 KW PEMFC / ANÁLISE DE DESEMPENHO DE UMA CÉLULA DE COMBUSTÍVEL TIPO PEM DE 5 KW COM REFORMADOR DE GÁS NATURAL E COGERAÇÃO
A 5 kW proton exchange membrane fuel cell (PEMFC) with a reformer has been installed and tested at the Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Brazil, aiming the experimental determination of its performance and co-generation potential to increase the fuel chemical energy usage. The unit uses a fuel processor to convert energy from natura
Publicado em: 2006
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22. GENERATION OF THERMAL AND ELECTRIC LOAD PROFILES FOR THE OPTIMIZATION OF A COGENERATION SYSTEM / GERAÇÃO DE PERFIS ELÉTRICO E TÉRMICO PARA OTIMIZAÇÃO DE UM SISTEMA DE COGERAÇÃO
The cogeneration will be an always present concept in the forms of energy conversion in the future, since it proposes to optimize the use of the energy resources. The system specification goes primarily through a technical economic analysis, where all the investments and operational costs are quantified for minimizing the cost of the produced energy. In the
Publicado em: 2005
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23. Factor of decision to adoption of energy micro-cogeneration sistem by natural gas: a study in hjotels three stars / Fator de decisão na adoção de um sistema de micro-cogeração de energia a gás natural :um estudo em Hotéis três estrelas
The natural gas perform a essential paper, not only in primary sectors of energy, but also in others sectors of economy. The use natural gas will have expansion in Brazil, motivated by governmental decision to increase the participation of this fuel in the Brazilian energy matrix from 4% to 12% up until 2010. in order to reach the objective related to increa
Publicado em: 2005
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24. ANÁLISE DE UM SISTEMA DE PRODUÇÃO SIMULTÂNEA DE ELETRICIDADE, FRIO E CALOR / ANALYSIS OF A SYSTEM FOR THE SIMULTANEOUS PRODUCTION OF ELECTRICAL ENERGY, HEAT AND COLD
The simultaneous production of electric energy, heat and cooling capacity from the primary fuel burning on a heat engine (trigeneration) can emerge as a promising strategy, from the energy and project points of view, mostly, in food and chemistry industries. The present work describes the experimental study of a vapor compression system for chilled water pro
Publicado em: 2005