Eficiência térmica da cogeração na usina vale verde – produção de álcool e eletricidade
From the need for greater investments to diversify the Brazilian energy matrix, the energy generation coming from clean and renewable sources has been increasingly attractive. Thus, with the large number of sugarcane power plants on the Brazilian territory, this type of biomass shows great potential...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/42893 |
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| Resumo: | From the need for greater investments to diversify the Brazilian energy matrix, the energy generation coming from clean and renewable sources has been increasingly attractive. Thus, with the large number of sugarcane power plants on the Brazilian territory, this type of biomass shows great potential of energy generation through the burning of its bagasse in thermoelectrical centrals. Thereby, this work performs a case study of the cogeneration system of Vale Verde Power Plant, located in the interior of the state of Rio Grande do Norte. Firstly, a descriptive analysis of the plant’s production processes was made: the cane milling, the alcohol production, the steam generation and the energy generation and, then, the calculus of the systems’ global thermic efficiency was made. From the efficiency determination, it was discussed the humidity effect on the calorific value and on mass flow rate of bagasse, parameters that influence considerably the system’s performance. The plant’s cogeneration presents a global efficiency of 28.19%, a considered low value in energy use, however characteristic from systems that use sugarcane bagasse. Analyzing the humidity effect, the calorific value increases significantly when the bagasse becomes drier, which results in a much lower need of utilization of this biomass for steam generation. |
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