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Cited by 50Phase Equilibria and ThermodynamicsThermodynamic properties of mixturesThermodynamic and Structural Properties of Metals and Alloys

EOS-LNG: A Fundamental Equation of State for the Calculation of Thermodynamic Properties of Liquefied Natural Gases

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Thol, Monika, Richter, Markus, May, Eric F., Lemmon, Eric W., Span, Roland·2019·Journal of Physical and Chemical Reference Data
DOI 10.1063/1.5093800
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Abstract

A new mixture model (EOS-LNG) for the accurate representation of thermodynamic property data of multicomponent natural gas mixtures in the liquid state is presented. The mathematical approach of the GERG-2008 equation of state of Kunz and Wagner is adopted and new binary-specific functions for methane + n-butane, methane + isobutane, methane + n-pentane, and methane + isopentane are developed. The representation of all experimental data available in the literature for the corresponding binary systems is carefully analyzed so that these functions can also be applied at fluid states beyond the liquefied natural gas (LNG) region. The EOS-LNG represents all available binary and multicomponent data in the LNG region within their specified experimental uncertainty, which is significantly more accurate than the GERG-2008 model. The main focus was given to the representation of new density data measured between 100 K and 180 K with a maximum pressure of 10 MPa. Deviations from the EOS-LNG presented here do not exceed 0.02% for binary data and 0.05% for multicomponent systems. Deviations of calculated values of these data from experimental data in other fluid regions are similar to or better than those calculated with the GERG-2008 model.

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  • This model is flexible with regards to the fluid type, utilises reference Helmholtz equations of state for the thermodynamic property calculations and has physically-based parameters that are anchored by high-quality experimental data for pure fluids measured using a custom BOG apparatus.

    “This model is flexible with regards to the fluid type, utilises reference Helmholtz equations of state [60,61] for the thermodynamic property calculations and, most importantly, has physically-based parameters that are anchored by high-quality experimental data for pure fluids measured using a custom BOG apparatus.”

    From Modelling of Liquid Hydrogen Boil-Off (2022) · cites this paper as [61]

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Authors
Thol, M., Richter, M., May, E. F., Lemmon, E. W., & Span, R.
Affiliations
  • Ruhr University Bochum (DE)
  • The University of Western Australia (AU)
  • National Institute of Standards and Technology (US)
Corresponding author
Thol, Monika
ORCID
Venue
Journal of Physical and Chemical Reference Data
Publisher
AIP Publishing
Published
2019-07-22
Volume
48
Issue
3
ISSN
  • 0047-2689 (ISSN-L)
  • 1529-7845
DOI
10.1063/1.5093800
OpenAlex
W2962855068
Cited by
50
References
90
Citations by year
2026: 1 · 2025: 5 · 2024: 9 · 2023: 6 · 2022: 11 · 2021: 8 · 2020: 5 · 2019: 5
FWCI
2.56
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Journal of Physical and Chemical Reference Data (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion, other-oa)
Funders
  • Australian Research Council Industrial Transformation Training Center for LNG Futures (IC150100019)
  • European Metrology Research Program (ENG60-REG3)
  • Ruhr-University Research Plus (DFG GSC 98/3)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Phase Equilibria and Thermodynamics
  • Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Thermodynamic properties of mixtures
  • Physical Sciences › Engineering › Mechanical Engineering › Thermodynamic and Structural Properties of Metals and Alloys
Keywords
liquefied natural gas, equation of state, density, GERG-2008, low-temperature liquids

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