Navegando por Autor "LOPES, Antonio Dimael de Almeida"

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    Influência de Incrustações na Eficiência de Trocadores de Calor: O Caso da Perda de Produtividade em Hidrelétricas
    (Universidade Federal do Pará (UFPA), 2011) LOPES, Antonio Dimael de Almeida; MACÊDO, Emanuel Negrão
    Heat exchangers are widely used in industrial processes, including hydroelectric plants, where they are employed to control the temperature of systems that generate heat during energy production. This work evaluates the influence of fouling on the efficiency of heat exchangers, focusing on productivity losses in hydroelectric plants. The study proposes the application of an automated mechanical cleaning process to eliminate or minimize the loss of efficiency in heat exchangers in the cooling system of hydraulic generators. The research was conducted at the Balbina Hydroelectric Plant, where the impacts of fouling on thermal efficiency and plant productivity were analyzed. The results indicate that automated cleaning significantly reduces maintenance shutdowns, increasing system efficiency and productivity.
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    INFLUÊNCIA DE INCRUSTAÇÕES NA EFICIÊNCIA DE TROCADORES DE CALOR: O CASO DA PERDA DE PRODUTIVIDADE EM HIDRELÉTRICAS
    (Universidade Federal do Pará, 2011) LOPES, Antonio Dimael de Almeida; MACÊDO, Emanuel Negrão
    Heat exchangers are widely used in industrial processes and various applications. In hydroelectric power plants, they are essential for cooling key components, employing open cooling systems that draw water directly from reservoirs. However, this method can lead to fouling buildup, reducing equipment efficiency and impacting productivity. This study evaluated whether the application of an automated mechanical cleaning process could minimize or eliminate efficiency loss in heat exchangers used in hydro generator cooling systems. The research showed that periodic removal of fouling significantly improves thermal efficiency and reduces unplanned shutdowns in hydroelectric plants.