Equations of state for the thermodynamic properties of cryogenic mixtures for helium-4, neon, and argon

Published

March 1, 2020

Author(s)

Jakub Tkaczuk, Eric Lemmon, Ian Bell, Nicholas Luchier, Francois Millet

Abstract

Based upon the conceptual design reports for the future circular collider (FCC) cryogenic system, the need for more accurate thermodynamic property models of mixtures was identified. Both academic institutes and world-wide industries have identified the lack of a reliable equation of state for mixtures used at very low temperatures. Detailed cryogenic architecture modeling and design cannot be assessed without valid fluid properties. Therefore, the latter is the focus of this work. The modeling was extended to other fluids beneficial for scientific and industrial application beyond the particle physic's needs. The properties are modeled for some noble gas mixtures with the use of multi-fluid Helmholtz-energy-explicit models: helium-neon, neon-argon, and helium-argon.

Citation

J. Phys. & Chem. Ref. Data (JPCRD) -

Volume

49

NIST Pub Series

J. Phys. & Chem. Ref. Data (JPCRD)

Pub Type

NIST Pubs

Download Paper

https://doi.org/10.1063/1.5142275

Local Download

Citation

Tkaczuk, J. , Lemmon, E. , Bell, I. , Luchier, N. and Millet, F. (2020), Equations of state for the thermodynamic properties of cryogenic mixtures for helium-4, neon, and argon, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.1063/1.5142275, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=929167 (Accessed October 7, 2025)