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Modelagem termodinâmica de uma planta heliotérmica de calhas parabólicas utilizando sais fundidos como fluido de transferência de calor
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Abstract(s)
RESUMO: O presente trabalho tem por foco a modelagem termodinâmica de uma planta heliotérmica de calhas parabólicas, com capacidade de 30 MWe, que utiliza sais fundidos como fluido de transferência de calor e armazenamento térmico. O modelo desenvolvido abarcou o funcionamento do campo solar, dos tanques de armazenamento direto e do bloco de potência. O desempenho da planta termossolar foi avaliado a partir da energia elétrica acumulada produzida, do fator de capacidade e da eficiência solar-elétrica mensal e anual. Os resultados obtidos mostram uma geração acumulada anual de 124 GWh, fator de capacidade anual de 47% e eficiência solar-elétrica anual de 20%. Os resultados foram também calculados através do software System Advisor Model (SAM) com diferenças inferiores a 2%, indicando a boa aderência dos resultados de simulação.
ABSTRACT: The present work focuses on the thermodynamic modeling of a CSP plant of parabolic troughs, with a capacity of 30 MWe, which uses molten salts as heat transfer fluid and thermal storage. The model developed covered the operation of the solar field, the direct storage tanks and the power block. The performance of the thermosolar plant was evaluated based on the accumulated electric energy produced, the capacity factor and the monthly and annual solar-electric efficiency. The results obtained show an annual accumulated generation of about 124 GWh, annual capacity factor of 47% and annual solar-electric efficiency of 20%. The results were also calculated through the System Advisor Model (SAM) software with differences lower than 2%, thus indicating the proper compliance of the simulation results.
ABSTRACT: The present work focuses on the thermodynamic modeling of a CSP plant of parabolic troughs, with a capacity of 30 MWe, which uses molten salts as heat transfer fluid and thermal storage. The model developed covered the operation of the solar field, the direct storage tanks and the power block. The performance of the thermosolar plant was evaluated based on the accumulated electric energy produced, the capacity factor and the monthly and annual solar-electric efficiency. The results obtained show an annual accumulated generation of about 124 GWh, annual capacity factor of 47% and annual solar-electric efficiency of 20%. The results were also calculated through the System Advisor Model (SAM) software with differences lower than 2%, thus indicating the proper compliance of the simulation results.
Description
CIES2020 - XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar
Keywords
Solar energy Solar thermal energy Parabolic system Energetic efficiency
Citation
Oliveira, L.A.J... [et.al.] - Modelagem termodinâmica de uma planta heliotérmica de calhas parabólicas utilizando sais fundidos como fluido de transferência de calor. In: CIES2020: As Energias Renováveis na Transição Energética: Livro de Comunicações do XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar. Helder Gonçalves, Manuel Romero (Ed.). Lisboa, Portugal: LNEG, 3-5 Novembro, 2020, p. 563-571
Publisher
LNEG - Laboratório Nacional de Energia e Geologia