A generalization of the corresponding states principle using two nonspherical reference fluids

Teja, Amyn S.; Sandler, Stanley I.; Patel, Navin C.

doi:10.1016/0300-9467(81)80053-6

Cited by 60 publications

(15 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The application of corresponding-states models extends from equilibrium properties such as vapor pressure [24][25][26][27][28], liquid density [11,26,[28][29][30], or surface tension [12,13,15,16,26,31,32] to transport properties such as viscosity [11,26,[33][34][35][36] and thermal conductivity [14,26,[37][38][39].…”

Section: Corresponding-states Principlementioning

confidence: 99%

Corresponding-States Modeling of the Speed of Sound of Long-Chain Hydrocarbons

Queimada

Coutinho²,

Marrucho³

et al. 2006

Int J Thermophys

View full text Add to dashboard Cite

Models based on the corresponding-states principle have been extensively used for several equilibrium and transport properties of different pure and mixed fluids. Some limitations, however, have been encountered with regard to its application to long chain or polar molecules. Following previous studies, where it was shown that the corresponding-states principle could be used to predict thermophysical properties such as vapor-liquid interfacial tension, vapor pressure, liquid density, viscosity, and thermal conductivity of longchain alkanes, the application of the corresponding-states principle to the estimation of speeds of sound, with a special emphasis on the less studied heavier n-alkane members, is presented. Results are compared with more than four thousand experimental data points as a function of temperature and pressure for n-alkanes ranging from ethane up to n-hexatriacontane. Average deviations are less than 2%, demonstrating the reliability of the proposed model for the estimation of speeds of sound.

show abstract

Section: Corresponding-states Principlementioning

confidence: 99%

Corresponding-States Modeling of the Speed of Sound of Long-Chain Hydrocarbons

Queimada

Coutinho²,

Marrucho³

et al. 2006

Int J Thermophys

View full text Add to dashboard Cite

show abstract

“…The application of corresponding states models extends from equilibrium properties such as vapor pressure [12][13][14][15][16], liquid density [14,[16][17][18], or surface tension [4,5,14,19,20] to transport properties such as viscosity [2,14,[21][22][23][24] and thermal conductivity [14,[25][26][27].…”

Section: Corresponding States Principlementioning

confidence: 99%

Modeling the Thermal Conductivity of Pure and Mixed Heavy n-Alkanes Suitable for the Design of Phase Change Materials

et al. 2005

View full text Add to dashboard Cite

Recent interest in the use of paraffin waxes is related to energy management provided by phase change materials (PCMs) where a tunable melting temperature range is used to store or release latent heat by means of the solid-liquid phase change. Thermal conductivity is an essential property for the correct design of these new materials, with applications as different as household heating and insulation, clothes for athletes and campers, or solar energy storage. As the interest in most of these heavier n-alkanes was small until recently, the available data are particularly limited. The purpose of this work was to develop a simple and accurate model to estimate the liquid thermal conductivity of heavy n-alkanes suitable for the design of efficient PCMs. Corresponding states theory was selected, based on previous improvements for equilibrium and transport properties of pure and mixed heavy n-alkanes, using a second-order perturbation model on the Pitzer acentric factor. Results for the n-alkane series show that this new model is able to predict thermal conductivities in a broad temperature and pressure range with a deviation of 3%, whereas common deviations using a linear perturbation model are close to 16%. Results for one ternary and five binary mixtures indicate that the extension to mixtures is straightforward with the best results obtained using a mixing rule previously proposed for viscosity.

show abstract

“…We propose a new approach to develop a generalized EOS based on previous research [15,16,32,33] on the corresponding states principle and on our newly developed technical EOS [29]. Several features of this approach are given in the following:…”

Section: An Approach To Generalize the Technical Eosmentioning

confidence: 99%

“…Lee and Kesler chose methane as the simple fluid and n-octane as the reference fluid. Teja et al [32,33] have extended the LK model, so that any two non-spherical fluids can be used as reference fluids. Their results are written as follows:…”

Section: Corresponding States Principlementioning

confidence: 99%

A Corresponding States Model for Generalized Engineering Equations of State

Sun

Ely

2005

Int J Thermophys

View full text Add to dashboard Cite

In this work, a four-parameter corresponding-states principle (CSP) model is proposed to generalize the universal technical Equation of State (EOS) developed in our previous work. This model is in the form of the Helmholtz free energy and takes the reduced density, reduced temperature, acentric factor and a polarity factor as variables. Compared to other generalized equations such as the one by Span and Wagner for nonpolar fluids, and by Platzer and Maurer and by Wilding and Rowley for polar fluids, the CSP model developed in this work shows good accuracy for the 22 nonpolar, polar, and associating fluids considered in this study and offers the flexibility to be extended to other fluids of industrial interest. In addition, the polarity factor used in this model has been successfully correlated from quantitative structure activity relationship (QSAR) molecular descriptors.

show abstract

A generalization of the corresponding states principle using two nonspherical reference fluids

Cited by 60 publications

References 10 publications

Corresponding-States Modeling of the Speed of Sound of Long-Chain Hydrocarbons

Corresponding-States Modeling of the Speed of Sound of Long-Chain Hydrocarbons

Modeling the Thermal Conductivity of Pure and Mixed Heavy n-Alkanes Suitable for the Design of Phase Change Materials

A Corresponding States Model for Generalized Engineering Equations of State

Contact Info

Product

Resources

About