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Propriétés thermophysiques de l'hydrogène et du deutérium dans toutes les compositions ortho-para.

Thermophysical properties of hydrogen and deuterium at all ortho-para compositions.

Numéro : pap. n. 067

Auteurs : LEACHMAN J., RICHARDSON I.

Résumé

Hydrogen, deuterium, and tritium have two separable nuclear-spin isomers, denoted by ortho and para, with potentially significant differences in thermophysical properties. These differences are most apparent for storage applications at cryogenic temperatures where the equilibrium mixture concentration changes substantially with temperature. Property differences approaching 30% can be observed between the ortho-para forms. Recent advances in the equations of state for hydrogen and deuterium have created an opportunity to couple statistical models of ideal-gas properties with real fluid models of non-ideal property behaviour. The resulting formulations are capable of high-accuracy property estimations at all ortho-para compositions. Methodologies for implementing the models are discussed and comparisons of the property calculations are presented.

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Pages : 267-272

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Détails

  • Titre original : Thermophysical properties of hydrogen and deuterium at all ortho-para compositions.
  • Identifiant de la fiche : 30006688
  • Langues : Anglais
  • Source : Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Date d'édition : 11/09/2012

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