A New Thermodynamic Model to Approximate Properties of Subcritical Liquids
Sánchez-Orgaz, Susana, Varela, Fernando, Rodríguez, Javier y González, Celina . (2023) A New Thermodynamic Model to Approximate Properties of Subcritical Liquids.
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In order to obtain the thermodynamic properties of compressed liquids, it is usual to consider them as incompressible systems, since liquids and solids are well represented by this thermodynamic model. Within this model, there are two usual hypotheses that can be derived in two different submodels: the strictly incompressible (SI) model, which supposes a constant specific volume 𝑣=𝑣0, and a more general model, called temperature-dependent incompressible (TDI) model, which relates a specific volume to temperature, 𝑣=𝑣(𝑇). But, usually, this difference ends here in the thermal equation of state, and only the SI model was developed for caloric and entropic equations. The aim of this work is to provide a complete formulation for the TDI model and show where it can be advantageously used rather than the SI model. The study concludes that the proposed model outperforms the traditional model in the study of subcritical liquid. One conceivable utilization of this model is its integration into certain thermodynamic calculation software packages (e.g., EES), which integrate the more elementary SI model into its code for certain incompressible substances.
The registered version of this article, first published in Entropy, is available online at the publisher's website: MPDI, https://doi.org/10.3390/e25071002
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La versión registrada de este artículo, publicado por primera vez en Entropy, está disponible en línea en el sitio web del editor: MDPI, https://doi.org/10.3390/e25071002
