Desarrollo de una aplicación para el cálculo de las propiedades de la mezcla amoniaco-agua
Resumo
El diseño y la optimización de sistemas energéticos en la actualidad son de gran importancia. Algunos de estos sistemas emplean la mezcla amoniaco-agua como fluido de trabajo, por lo tanto, el cálculo de las propiedades termodinámicas se vuelve indispensable para su evaluación, diseño y optimización. En el presente trabajo se ha desarrollado una aplicación en ExcelTM empleando Visual Basic (VBA) a partir de una formulación basada en la energía de Gibbs de exceso, con la finalidad de simular diversos sistemas, como pueden ser de refrigeración, aire acondicionado, bombas de calor, cogeneración y ciclos de potencia, sin la necesidad de adquirir simuladores comerciales para tal propósito. Para validar dicho programa se han comparado los resultados con los datos arrojados por el software desarrollado por el National Institute of Standars and Technology (NIST) y datos experimentales reportados en literatura.
Palavras-chave
Mezcla amoniaco-agua, propiedades termodinámicas, energía libre de Gibbs de exceso, entalpía, entropía
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