scholarly journals Application of the MvdW1 and HVOS-NRTL mixing rules to the simultaneous correlation of excess enthalpies and W-shaped excess heat capacities data of 1,3-dioxolane + n-alkane systems

1999 ◽  
Vol 64 (12) ◽  
pp. 801-811 ◽  
Author(s):  
Bojan Djordjevic ◽  
Mirjana Kijevcanin ◽  
Aleksandar Tasic ◽  
Slobodan Serbanovic
Keyword(s):  
Excess Enthalpy ◽  
Excess Heat Capacity ◽  
Fluid Mixing ◽  
Mixing Rules ◽  
Mixing Rule ◽  
Excess Enthalpies ◽  
Temperature Dependent ◽  
Excess Heat ◽  
Nrtl Equation ◽  
Two Parameter

The Peng-Robinson-Stryjek-Vera (PRSV) equation of state (EOS) coupled with a modified two parameter van der Waals one-fluid mixing rule (MvdW1) and the Huron-Vidal-Orbey-Sandler mixing rule incorporating the NRTL equation as a GE model was used for the correlation of excess enthalpy (HE), excess heat capacity (CpE) and the simultaneous correlation of both properties. All calculations with temperature dependent parameters of EOS models were applied to 1,3-dioxolane+n-alkane systems. The correlation of the H E and Cp E data alone with four coefficients and the HE+CpE data with six coefficients of the temperature dependent parameters of the HVOS-NRTL models could be considered as very satisfactory.

scholarly journals Simultaneous correlation of the excess enthalpy and W-shaped excess heat capacity of 1, 4-dioxane- n-alkane systems by PRSV-HVOS CEOS

2003 ◽  
Vol 68 (1) ◽  
pp. 35-46 ◽  
Author(s):  
Mirjana Kijevcanin ◽  
A.B. Djordjevic ◽  
Ivona Grguric ◽  
Bojan Djordjevic ◽  
Slobodan Serbanovic
Keyword(s):  
Heat Capacity ◽  
Equation Of State ◽  
Concentration Dependence ◽  
Excess Enthalpy ◽  
Excess Heat Capacity ◽  
Mixing Rule ◽  
Temperature Dependent ◽  
Excess Heat ◽  
Nrtl Equation

In this work the Peng-Robinson-Stryjek-Vera (PRSV) equation of state coupled with the Huron-Vidal-Orbey-Sandler (HVOS) rule was tested for the correlation of the excess enthalpy (HE) and the excess heat capacity (cp E) alone and simultaneously. The HVOS mixing rule incorporates the NRTL equation as the GE model. All calculations were performed using the linear and reciprocal forms of the temperature dependent parameters of the models. For all the evaluations the 1,4-dioxane+n-alkane systems were chosen having in mind the unusually W-shaped concentration dependence of cp E for these systems. The correlation of the HE and cp E data alone for all the investigated systems using four coefficients and for the simultaneous correlation of HE+cp E data using six coefficients of the temperature dependent parameters of the PRSV-HVOS models could be considered as being very satisfactory.

On Temperature Dependence of Excess Gibbs Energy

1999 ◽  
Vol 64 (7) ◽  
pp. 1093-1099 ◽  
Author(s):  
Ivona Malijevská ◽  
Anatol Malijevský
Keyword(s):  
Heat Capacity ◽  
Gibbs Energy ◽  
Temperature Dependence ◽  
Excess Gibbs Energy ◽  
Excess Enthalpy ◽  
Excess Heat Capacity ◽  
Wilson Equation ◽  
Excess Heat ◽  
Energy Excess ◽  
Wilson And Nrtl Equations

Temperature dependence of GE is discussed for three widely used equations linear and nonlinear in parameters. It is shown that the Wilson equation predicts always positive excess heat capacity regardless of values of its parameters. Several temperature modifications of the Redlich-Kister, Wilson and NRTL equations are discussed with respect to the sign of the excess Gibbs energy, excess enthalpy and excess heat capacity.

scholarly journals Excess Heat Capacity in Mo/Au Transition Edge Sensor Bolometric Detectors

2021 ◽  
pp. 1-1
Author(s):  
Ari David Brown ◽  
Regis Brekosky ◽  
Felipe Colazo-Petit ◽  
Matthew Greenhouse ◽  
James Hay-Wehle ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Transition Edge Sensor ◽  
Excess Heat Capacity ◽  
Excess Heat ◽  
Bolometric Detectors ◽  
Transition Edge

scholarly journals Prediction of excess molar volumes of selected binary mixtures from refractive index data

2014 ◽  
Vol 79 (6) ◽  
pp. 707-718 ◽  
Author(s):  
Jelena Vuksanovic ◽  
Divna Bajic ◽  
Gorica Ivanis ◽  
Emila Zivkovic ◽  
Ivona Radovic ◽  
...  
Keyword(s):  
Refractive Index ◽  
Binary Mixtures ◽  
Excess Molar Volumes ◽  
Mixing Rules ◽  
Mixing Rule ◽  
Molar Volumes ◽  
Index Data ◽  
Peg 400 ◽  
Benzene Toluene ◽  
Refractive Index Data

The excess molar volumes of twenty two binary mixtures containing various groups of organic compounds: alcohols (ethanol, 1-propanol, 1,2-propanediol, 1,3-propanediol and glycerol), ketone (acetone), ester (butyl lactate), lactam (N-methyl-2-pyrrolidone), PEGs (PEG 200, PEG 400) and aromatics (benzene, toluene and pyridine) were predicted from the refractive index data, using three types of equations coupled with several mixing rules for refractive index calculations: the Lorentz-Lorenz, Dale-Gladstone, Eykman, Arago-Biot, Newton, and Oster. The obtained results were analysed in terms of the applied equation and mixing rule and the nature of interactions between the mixtures? components.

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