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Statut actuel d'une nouvelle équation d'état fondamentale pour le trans-1-chloro-3,3,3-trifluoro-1-propène [R-1233zd(E)].

Current status of a new fundamental equation of state for trans-1-Chloro-3,3,3-tri?uoro-1-propene [R-1233zd(E)].

Numéro : pap. n. 1465

Auteurs : AKASAKA R., LEMMON E.

Résumé

The current status of a new fundamental equation of state for trans-1-chloro-3,3,3-trifluoro-1-propene [R-1233zd(E)] is given. Due to its non-flammability and preferable thermophysical properties, this refrigerant is considered as one possible alternative for 1,1,1,3,3-pentafluoropropane (R-245fa). The new equation is valid for temperatures from 215 K to 444 K and pressures up to 35MPa. Expected uncertainties in calculated properties in this range are 0.01 % in liquid densities,0.03 % in vapor densities, 0.05 % in vapor pressures, and 0.1 % in vapor- and liquid-phase soundspeeds. Improvements from the currently available equation are that the upper limit of pressureis extended to 35 MPa and that liquid-phase sound speeds are represented more accurately. Theequation shows quite reasonable extrapolation behavior at extremely low and high temperatures,and at high pressures. The ISO/TC86/SC8 committee will recommend the final form of this equa-tion as an international standard formulation for R-1233zd(E).

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Pages : 8

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Détails

  • Titre original : Current status of a new fundamental equation of state for trans-1-Chloro-3,3,3-tri?uoro-1-propene [R-1233zd(E)].
  • Identifiant de la fiche : 30026116
  • Langues : Anglais
  • Sujet : Généralités
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.1465

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