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Nouveaux modèles thermodynamiques de mélange pour les mélanges contenant des HFO.

New thermodynamic mixture models for HFO-containing blends.

Numéro : 2114

Auteurs : BELL I. H.

Résumé

With the modern use of fluorinated olefins as refrigerants, there is a pressing need for reference thermodynamic models to design components and cycles. Recent activities at NIST are summarized, including a survey of existing literature data and results from experimental measurements. Measurements of bubble point pressure, speed of sound, and density on a selection of new blends were carried out. Finally, new thermodynamic models compatible with REFPROP 10.0 were developed. Included in this set are the binaries R-1234yf/134a, R-1234yf/1234ze(E), and R-134a/1234ze(E). The extremely high accuracy of the measurements (particularly the measurements of density and speed of sound) have allowed us to identify deficiencies in the existing reference pure fluid equations of state.

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Pages : 9 p.

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Détails

  • Titre original : New thermodynamic mixture models for HFO-containing blends.
  • Identifiant de la fiche : 30030470
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 10/07/2022

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