Análisis energético y exergético de una planta de producción de hidrógeno electrolítico
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Data
2016
Autores
Galeano Espinola, Diego Osmar
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Resumo
Fue realizado un análisis termodinámico de una planta de producción de hidrógeno a partir la electrólisis
del agua, ubicada en la ciudad de Foz de Iguazú – Brasil, con una capacidad de producción de 10 Nm 3 /h.
Las diferentes etapas del proceso fueron evaluadas por medio de balances de masa, energía y exergía,
analizando desde el suministro de energía eléctrica y agua, hasta el almacenamiento del hidrógeno
presurizado a 350 bar. Los parámetros considerados para los cálculos son datos reales de operación
nominal de la planta, que fueron utilizados como variables de entrada de un modelo termodinámico
implementado en el EES (Engineering Ecuation Solver), del cual se obtuvo como resultados eficiencias
globales de energía y exergía de 57.1% y 53.1% respectivamente. También se identificó que, al utilizar
energía eléctrica para producir hidrógeno, las principales perdidas termodinámicas están asociadas al
proceso de separación del agua, y a las irreversibilidades de la transferencia de calor para enfriamiento
y calentamiento de los procesos de purificación y compresión de los gases. Las perdidas asociadas al
calor residual, debido a su baja calidad, no son tan representativas como acostumbran indicar los análisis
energéticos
There was performed a thermodynamic analysis of an hydrogen production plant from water electrolysis in the city Foz do Iguaçu- Brazil, with a production capacity of 10 Nm 3 /h. The different stages of the process were evaluated using mass, energy and exergy balances, analyzing from the electricity and water supply, to the storage of pressurized hydrogen at 350 bar. The parameters considered for the calculations were actual data from nominal operation of the system, which were used as input variables for a thermodynamic model implemented in EES (Engineering Equation Solver), obtaining as results overall energy and exergy efficiencies of 57.1% and 53.1 % respectively. It was also identified that by using electrical energy to produce hydrogen, the main thermodynamic losses are associated with water splitting process, irreversibilities of heating and refrigeration in the purification and compression stages. The losses associated with residual heat, due their low quality, are not as representative as energy analysis usually indicates
There was performed a thermodynamic analysis of an hydrogen production plant from water electrolysis in the city Foz do Iguaçu- Brazil, with a production capacity of 10 Nm 3 /h. The different stages of the process were evaluated using mass, energy and exergy balances, analyzing from the electricity and water supply, to the storage of pressurized hydrogen at 350 bar. The parameters considered for the calculations were actual data from nominal operation of the system, which were used as input variables for a thermodynamic model implemented in EES (Engineering Equation Solver), obtaining as results overall energy and exergy efficiencies of 57.1% and 53.1 % respectively. It was also identified that by using electrical energy to produce hydrogen, the main thermodynamic losses are associated with water splitting process, irreversibilities of heating and refrigeration in the purification and compression stages. The losses associated with residual heat, due their low quality, are not as representative as energy analysis usually indicates
Abstract
Descrição
Trabajo de conclusión de curso presentado al Universidad Federal de la Integración Latinoamericana (UNILA), como requisito parcial a la obtención del título de bacharel em Engenharia de Energia Renovável. Orientador; Luis Evelio Garcia Acevedo ; Larissa Machado
Palavras-chave
Análisis energético, Planta de producción, Hidrógeno electrolítico
Citação
GALEANO ESPINOLA, Diego Osmar. Análisis energético y exergético de una planta de producción de hidrógeno electrolítico. 2016. 18 p. Trabajo de conclusión de curso (Bacharel em Engenharia Energia Renovável)- Universidad Federal de la Integración Latinoamericana (UNILA), Foz do Iguazú, 2016.