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Previous issue date: 2007-10-29 / In energy systems, the balance of entrances, exits and losses are fundamental to rationalize the energy consumption, independently of the source (sun, natural gas, wind, water, firewood or oil). This estimate is important so much in the phase of project of the facilities, as in the exploration or operation. In the project phase it indicates the energy needs of the process and the contribution of the energy in the cost of the product and the capacity of storage of the fuel and in the operation phase it allows to evaluate the use of the energy in the process of it burns, showing the weak points that should suffer intervention to improve the efficiency. With this tool, it can be implemented routines of calculation of thermal balances in ovens of it burns of structural ceramic, in way to generate an optimized mathematical model for application in the current and promising structural ceramic brazilian industry. The ceramic oven in study is located in the metropolitan area of Natal (Rio Grande do Norte) and it is a continuous oven of the type wagons tunnel, converted of firewood for natural gas and it produces blocks of red ceramic. The energy balance was applied in the oven tunnel before and after the conversion and made the comparisons of the energy efficiencies (it burns to the firewood and it burns to natural gas), what showed that the gaseous fuel is more efficient when we burn structural ceramic in ovens tunnels. When we burn natural gas, the requested energy is smaller and better used. Tests were accomplished in the burned product that showed the best quality of the burned brick with natural gas. That quality improvement makes possible to accomplish new interventions for the most rational use of the energy in the oven tunnel of the Ceramic in study and in the industries of structural ceramic of the whole Brazil, that need control tools of burning and of quality / Em sistemas energ?ticos, o balan?o de entradas, sa?das e perdas s?o fundamentais para racionalizar o consumo energ?tico, independentemente da fonte (sol, g?s natural, vento, ?gua, lenha ou ?leo). Esta estimativa ? importante tanto na fase de projeto das instala??es, quanto na explora??o ou opera??o. Na fase de projeto indica as necessidades energ?ticas do processo e a contribui??o da energia no custo do produto e a capacidade de armazenamento do combust?vel e na fase de opera??o permite avaliar a utiliza??o da energia no processo de queima, mostrando os pontos fracos que devem sofrer interven??o para melhorar a efici?ncia. Com esta ferramenta, pode-se implementar rotinas de c?lculo de balan?os t?rmicos em fornos de queima de cer?mica estrutural, de forma a gerar um modelo matem?tico otimizado para aplica??o na atual e promissora ind?stria cer?mica estrutural brasileira. O forno cer?mico em estudo est? localizado na regi?o metropolitana de Natal e trata-se de um forno cont?nuo do tipo t?nel de vagonetas, convertido de lenha para g?s natural e produz blocos de cer?mica vermelha. Foi aplicado o balan?o energ?tico no forno t?nel antes e depois da convers?o e feita as compara??es das efici?ncias energ?ticas (queima ? lenha e queima a g?s natural), o que mostrou que o combust?vel gasoso ? mais eficiente na queima de cer?mica estrutural em fornos t?neis. Na queima gasosa a energia requerida ? menor e melhor aproveitada. Foram realizados testes no produto queimado que mostraram a melhor qualidade do tijolo queimado a g?s natural. Essa melhoria de qualidade possibilita realizar-se novas otimiza??es para o uso mais racional da energia no forno t?nel em quest?o e nas ind?strias de cer?mica estrutural de todo o Brasil, que necessitam de ferramentas de controle de queima e de qualidade
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15871 |
| Date | 29 October 2007 |
| Creators | Freitas, Fernando C?sar Garcia de |
| Contributors | CPF:04514998320, http://lattes.cnpq.br/5840621182000517, Pereira, Enilson Ara?jo, CPF:14661594487, http://lattes.cnpq.br/1482072933537042, Silveira, Jair, CPF:13244434487, Carvalho, Lair Pereira de, CPF:13053205491, Nascimento, Rubens Maribondo do, CPF:80732810400, http://lattes.cnpq.br/8671649752936793, Melo, Dulce Maria de Ara?jo, Melo, Marcus Ant?nio de Freitas |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Qu?mica, UFRN, BR, Pesquisa e Desenvolvimento de Tecnologias Regionais |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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