Prediction of the thermodynamic properties for <italic style="font-style: italic">ortho</italic>-, <italic style="font-style: italic">para</italic>-and normal hydrogen using an equation of state with quantum effects for square-well chain fluid with variable range

Jia Yuqian; Hu Song; Li Jiashu; Liu Yingjie; Ye Qing; Li Jinlong

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Prediction of the thermodynamic properties for ortho-, para-and normal hydrogen using an equation of state with quantum effects for square-well chain fluid with variable range

Updated：2026-08-24

- Prediction of the thermodynamic properties for ortho-, para-and normal hydrogen using an equation of state with quantum effects for square-well chain fluid with variable range
- Chinese Journal of Chemical Engineering Vol. 94, Issue 6, Pages: 232-248(2026)
- Affiliations：
  
  Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology and School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
  PetroChina Petrochemical Research Institute, Beijing 102206, China
- Author bio：
  
  Corresponding authors. E-mail addresses: husong024@petrochina.com.cn(S. Hu)
  lijinlong@cczu.edu.cn(J. Li)
- Funds：
- DOI：
  CLC：
- Received：17 August 2025，
  
  Revised：2025-12-17，
  
  Accepted：23 December 2025，
  
  Online First：07 March 2026，
  
  Published：2026-06
- Accepted：
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Jia Yuqian, Hu Song, Li Jiashu, et al. Prediction of the thermodynamic properties for ortho-, para-and normal hydrogen using an equation of state with quantum effects for square-well chain fluid with variable range[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 232-248.
DOI：

Jia Yuqian, Hu Song, Li Jiashu, et al. Prediction of the thermodynamic properties for ortho-, para-and normal hydrogen using an equation of state with quantum effects for square-well chain fluid with variable range[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 232-248. DOI：

摘要

Abstract

The use of hydrogen as an energy carrier depends closely on its thermodynamic properties. In our previous work

a novel equation of state with quantum effects for square-well chain fluid with variable range (QSWCF-VR) has been presented and it was successfully used to represent the experimental phase equilibrium and pressure-volume-temperature (PVT) of quantum fluids such as helium

hydrogen

deuterium

etc

. To validate the predictive accuracy of the QSWCF-VR model

we calculated various thermodynamic properties (phase diagrams

isochoric and isobaric heat capacities

Joule-Thomson coefficients

speed of sound

enthalpy of evaporation

and internal energies) for

ortho

para

and normal hydrogen isomers over a broad range of temperatures and pressures. These predictions were based on transferable molecular parameters derived from experimental PVT data. Meanwhile

the comparisons of predicted results between the statistical associating fluid theory for Mie potentials of variable range corrected for quantum effects (SAFT-VRQ Mie) and this model were carried out. The results demonstrate that theQSWCF-VRmodel accurately predicts hydrogen's thermodynamic properties across a broad range of temperatures and pressures

with excellent agreement to published data.

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Keywords

references

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Prediction of the thermodynamic properties for ortho-, para-and normal hydrogen using an equation of state with quantum effects for square-well chain fluid with variable range

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摘要

Abstract

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