Estudio comparativo de un ciclo transcrítico de dióxido de carbono alimentado por un único ciclo geotérmico flash en los modos de funcionamiento con/sin economizador
Resumen
El uso de energías renovables, en particular la geotérmica, está aumentando en todo el mundo. Se ha demostrado que recuperar el calor perdido durante los ciclos geotérmicos es esencial debido a la ineficiencia de estos ciclos. Este estudio propone un ciclo combinado de generación de energía que utiliza el software EES para modelar un ciclo geotérmico de un solo flujo y un ciclo transcrítico de dióxido de carbono. El estudio compara el rendimiento del sistema durante sus fases operativas "Sin economizador" y "Con economizador". Se examina el impacto del economizador en las métricas de producción del sistema, incluida la producción de potencia neta, la eficiencia energética y la eficiencia exergética. Los resultados muestran que la potencia neta del sistema "con economizador" aumentó de 451.3 kW a 454 kW. La diferencia de eficiencia energética entre los dos sistemas se basa en la primera ley de la termodinámica, teniendo el sistema "Sin economizador" un valor de 6.036% y el sistema "Con economizador" un valor de 6.075%. El sistema sin economizador tuvo un valor de eficiencia exergética del 26.26%, mientras que el sistema con economizador alcanzó un valor del 26.43% basado en la segunda ley de la termodinámica. La instalación del economizador aumentó la tasa de coste total económico del sistema de 0.225 M$/año a 0.2294 M$/año, lo que se tradujo en un aumento de la tasa de coste del producto de 15.82$/GJ a 16.02$/GJ.
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