Partager

Document IIF

Extension de la plage de température et de la performance du R-744.

Extending the range and performance of R-744.

Numéro : 1042

Auteurs : LOW R.

Résumé

R-744 is finding increasing favour as a non-flammable refrigerant in a range of cold-chain refrigeration and other applications. Its physical properties however constrain its application: its triple point of -57°C sets a lower practical operating limit, while the very high operating pressures and reduced energy efficiency in high ambient climates limit its attraction for air-conditioning applications. Koura Global has in development a range of hybrid R-744-fluorocarbon refrigerants which are non-flammable but which offer significantly improved energy efficiency, reduced operating pressure and extended operational temperature range compared to R-744, whilst also having low Global Warming Potentials. The paper will present a suitable thermodynamic model for these fluids and share property and performance test data on several selected applications: heat pumping; air-conditioning; and refrigeration to achieve refrigerated chamber temperatures below -70°C.

Documents disponibles

Format PDF

Pages : 9

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Extending the range and performance of R-744.
  • Identifiant de la fiche : 30028810
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2nd IIR Conference on HFO Refrigerants and Low GWP Blends
  • Date d'édition : 06/2021
  • DOI : http://dx.doi.org/10.18462/iir.HFO.2021.1042
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

Liens


Voir d'autres communications du même compte rendu (52)
Voir le compte rendu de la conférence

Indexation