A hybrid analytical method for evaluating thermodynamic properties of mixtures by the Peng-Robinson equation of state

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Hamersztein, A.^1 ; Tzabar, N.^1

Department of Mechanical Engineering and Mechatronics, Faculty of Engineering, Ariel University, Ariel

40700, Israel^1

关键词: Cubic equation of state;    Enthalpy differences;    Hybrid analytical method;    Hybrid method;    Peng-Robinson;    Peng-Robinson equation of state;    REFPROP;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012091/pdf
DOI  :  10.1088/1757-899X/502/1/012091

来源: IOP

【 摘 要 】

A new analytical hybrid method for calculating enthalpy difference in mixtures is presented in this paper. The method is based on the Peng-Robinson cubic equation of state (PR CEOS), it is a combination of two common enthalpy calculation methods, and it does not require any experimental data. Thefunction of the PR CEOS for every component is selected among several models. The new hybrid method results of 8 different mixtures are compared to data from the REFPROP database, and a satisfying agreement is obtained.Published under licence by IOP Publishing Ltd.