Author
Ding-Yu Peng
Bio: Ding-Yu Peng is an academic researcher from University of Alberta. The author has contributed to research in topics: Equation of state & Equilibrium thermodynamics. The author has an hindex of 5, co-authored 6 publications receiving 9853 citations.
Papers
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TL;DR: In this paper, the attractive pressure term of the semi-empirical van der Waals equation has been modified for predicting the vapor pressure and volumetric behavior of singie-component systems.
Abstract: The development of a new two-constant equation of state in which the attractive pressure term of the semiempirical van der Waals equation has been modified is outlined. Examples of the use of the equation for predicting the vapor pressure and volumetric behavior of singie-component systems, and the phase behavior and volumetric behavior of binary, ternary, and multicomponent systems are given. The proposed equation combines simplicity and accuracy. It performs as well as or better than the Soave-Redlich-Kwong equation in all cases tested and shows its greatest advantages in the prediction of liquid phase densities.
10,520 citations
TL;DR: In this paper, the rigorous critical state criterion enunciated by Willard Gibbs can be used with a recently formulated two-parameter equation of state to obtain an analytical solution to the problem of predicting the critical properties of defined multicomponent mixtures.
Abstract: This paper shows how the rigorous critical state criterion enunciated by Willard Gibbs can be used with a recently formulated two-parameter equation of state to obtain an analytical solution to the problem of predicting the critical properties of defined multicomponent mixtures. Comparisons are made between predicted and experimental values for several systems containing paraffin hydrocarbons and related materials.
152 citations
TL;DR: The reliability of the resulting Peng-Robinson equation for predicting volumetric and phase behavior is illustrated for complex hydrocarbon systems in this article, where modifications to improve the performance of the equation for two-and three-phase systems containing water are described.
143 citations
TL;DR: In this article, a two-constant equation of state is used to predict the phase behavior of systems exhibiting a water-rich liquid phase, a hydrocarbon rich liquid phase and a vapor phase.
Abstract: A recently proposed two-constant equation of state is used to predict the phase behaviour of systems exhibiting a water-rich liquid phase, a hydrocarbon-rich liquid phase and a vapor phase. The algorithm proposed is efficient and thermodynamically rigorous and it converges significantly faster than earlier models. Representative calculations are shown for the methane-n butane water system, the n butane-1 butane-water system, and a synthetic six-component hydrocarbon mixture containing waer.
On emploie une equation d'etat a deux constantes, qui a ete proposee recemment, pour prevoir le comportement des phases de systemes impliquant une phase liquide riche en eau, une phase liquide riche en hydrocarbure et une phase vapeur. L'algorithme propose est efficace et rigoreux au point de vue thermodynamique; il converge bien plus vite que ne le font des modeles anterieurs. On presente des calculs representatifs pour les deux systemes methane-butane normal-eau et butane normal-butene 1-eau, ainsi que pour un melange d'hydrocarbures dont six composants sont synthetiques et qui contient de l'eau.
139 citations
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TL;DR: In this article, the Redlich-Kwong-soave method was used to improve volume estimations for pure liquids, mixtures of liquids or gases, and petroleum fluids.
1,102 citations
TL;DR: In this article, a number of numerical methods for stability analysis based on Gibbs' tangent plane criterion are described, which are applicable for both single phase and multiphase systems, mainly for Equation of State calculations using a single model for all fluid phases.
991 citations
TL;DR: Huron and Vidal as mentioned in this paper proposed a new mixing rule in simple equations of state for representing vapour-liquid equilibria of strongly non-ideal mixtures, which can be reduced to the classical quadratic rule for some easily predicted values of the interaction energies.
893 citations
TL;DR: A new equation of state for the thermodynamic properties of natural gases, similar gases, and other mixtures, the GERG-2008, was presented in this paper, which is based on 21 natural gas components.
Abstract: A new equation of state for the thermodynamic properties of natural gases, similar gases, and other mixtures, the GERG-2008 equation of state, is presented in this work. This equation is an expanded version of the GERG-2004 equation. GERG-2008 is explicit in the Helmholtz free energy as a function of density, temperature, and composition. The equation is based on 21 natural gas components: methane, nitrogen, carbon dioxide, ethane, propane, n-butane, isobutane, n-pentane, isopentane, n-hexane, n-heptane, n-octane, n-nonane, n-decane, hydrogen, oxygen, carbon monoxide, water, hydrogen sulfide, helium, and argon. Over the entire composition range, GERG-2008 covers the gas phase, liquid phase, supercritical region, and vapor–liquid equilibrium states for mixtures of these components. The normal range of validity of GERG-2008 includes temperatures from (90 to 450) K and pressures up to 35 MPa where the most accurate experimental data of the thermal and caloric properties are represented to within their accura...
872 citations