Estimation of second-order derivative thermodynamic properties using the crossover cubic equation of state

Moon Sam Shin; Yongjin Lee; Hwayong Kim

doi:10.1016/j.jct.2007.10.008

Estimation of second-order derivative thermodynamic properties using the crossover cubic equation of state

Moon Sam Shin, Yongjin Lee, Hwayong Kim

Seoul National University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

In this research, we apply the crossover cubic equation of state (XCubic EOS) [1] to the calculations of thermodynamic second-order derivative properties (isochoric heat capacity, isobaric heat capacity, isothermal compressibility, thermal expansion coefficient, the Joule-Thomson coefficient, and speed of sound). This equation of state is used to calculate those properties of pure systems (carbon dioxide, normal alkanes from methane to propane). We show that, over a wide range of states, the equation of state yields each property with a much better accuracy than the original PT equation of state and near the critical region, represents the singular behaviour well.

Original language	English
Pages (from-to)	688-694
Number of pages	7
Journal	Journal of Chemical Thermodynamics
Volume	40
Issue number	4
DOIs	https://doi.org/10.1016/j.jct.2007.10.008
State	Published - Apr 2008
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the BK21 project of Ministry of Education of Korea and by the National Laboratory (NRL) Program.

Keywords

Carbon dioxide
Critical state
Crossover
Equation of state
Heat capacity

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10.1016/j.jct.2007.10.008

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title = "Estimation of second-order derivative thermodynamic properties using the crossover cubic equation of state",

abstract = "In this research, we apply the crossover cubic equation of state (XCubic EOS) [1] to the calculations of thermodynamic second-order derivative properties (isochoric heat capacity, isobaric heat capacity, isothermal compressibility, thermal expansion coefficient, the Joule-Thomson coefficient, and speed of sound). This equation of state is used to calculate those properties of pure systems (carbon dioxide, normal alkanes from methane to propane). We show that, over a wide range of states, the equation of state yields each property with a much better accuracy than the original PT equation of state and near the critical region, represents the singular behaviour well.",

keywords = "Carbon dioxide, Critical state, Crossover, Equation of state, Heat capacity",

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AU - Shin, Moon Sam

AU - Lee, Yongjin

AU - Kim, Hwayong

N1 - Funding Information: This work was supported by the BK21 project of Ministry of Education of Korea and by the National Laboratory (NRL) Program.

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N2 - In this research, we apply the crossover cubic equation of state (XCubic EOS) [1] to the calculations of thermodynamic second-order derivative properties (isochoric heat capacity, isobaric heat capacity, isothermal compressibility, thermal expansion coefficient, the Joule-Thomson coefficient, and speed of sound). This equation of state is used to calculate those properties of pure systems (carbon dioxide, normal alkanes from methane to propane). We show that, over a wide range of states, the equation of state yields each property with a much better accuracy than the original PT equation of state and near the critical region, represents the singular behaviour well.

AB - In this research, we apply the crossover cubic equation of state (XCubic EOS) [1] to the calculations of thermodynamic second-order derivative properties (isochoric heat capacity, isobaric heat capacity, isothermal compressibility, thermal expansion coefficient, the Joule-Thomson coefficient, and speed of sound). This equation of state is used to calculate those properties of pure systems (carbon dioxide, normal alkanes from methane to propane). We show that, over a wide range of states, the equation of state yields each property with a much better accuracy than the original PT equation of state and near the critical region, represents the singular behaviour well.

KW - Carbon dioxide

KW - Critical state

KW - Crossover

KW - Equation of state

KW - Heat capacity

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JO - Journal of Chemical Thermodynamics

JF - Journal of Chemical Thermodynamics

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ER -

Estimation of second-order derivative thermodynamic properties using the crossover cubic equation of state

Abstract

Bibliographical note

Keywords

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