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URI permanente para esta coleçãohttps://repositorio.fei.edu.br/handle/FEI/5123

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20112

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Autor: search.filters.author.Paulo de MelloAssunto: search.filters.subject.EFGT cycle

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2
  • N/D
    Artigo de evento 1 Citação(ões) na Scopus
    Thermal performance and pressure drop in a ceramic heat exchanger evaluated using CFD simulations
    (2011-07-07) MONTEIRO, D. B.; Paulo de Mello
    There is one potential demand for heat exchangers capable of supporting high temperatures, typically higher than 800°C, for use in thermal power plants. These heat exchangers could be used in the implementation of EFGT (Externally Fired Gas Turbines) cycles. To support these working conditions the heat exchanger must be constructed with ceramics. This work presents the results obtained with CFD simulations of one plate-fin ceramic heat exchanger. Correlations for the Colburn and friction factors, for a range of Reynolds number between 500 and 1500, are evaluated from the numerical results obtained with CFD. These correlations may be used for the thermal design of ceramic heat exchangers. One validation procedure is conducted comparing the simulation results with experimental data for a compact heat exchanger of similar configuration.
  • N/D
    Artigo de evento 7 Citação(ões) na Scopus
    Thermodynamic study of an EFGT (Externally Fired Gas Turbine) cycle with one detailed model for the ceramic heat exchanger
    (2011-07-07) Paulo de Mello; MONTEIRO, D. B.
    The EFGT cycle has been considered as an option to burn biomass in gas turbines. One key element on the implementation of one EFGT cycle is the ceramic heat exchanger necessary to support the high temperatures of operation. The performance of the ceramic heat exchanger, its effectiveness and pressure drop imposed to the gas flow, may have significant influence over the thermal efficiency of the EFGT cycle. The simulations of the EFGT cycle presented herein use correlations for the pressure drop and heat transfer of one ceramic heat exchanger of the plate and fin type, evaluated numerically. The results obtained show that the type of ceramic heat exchanger simulated presents adequate performance to be implemented in one EFGT cycle.