Partager

Document IIF

Experimental studies of thermodynamic properties of R744-oil-mixtures up to 140°C and 150 bar.

Numéro : pap. n. 8

Auteurs : FEJA S., HANZELMANN C.

Résumé

The knowledge of the thermodynamic properties of pure refrigerants and refrigeration oils is a precondition for developing a refrigeration cycle. In addition, the miscibility of the refrigerant in the oil and the influence of the working fluids on the properties of the mixtures are to be known. For the refrigerant carbon dioxide several types of refrigeration oils with different miscibility/solubility and viscosity properties can be used. In MAC applications for passenger cars PAG oils are preferred. In this paper new methods and equipment to measure the thermodynamic properties miscibility, density, vapour pressure, solubility, and viscosity are discussed and examples of experimental data are shown for a R744-oil-mixture. At first the miscibility gap was examined by visual observation of the mixtures. Then the other properties were measured in the miscible range from 70 - 100 % oil up to 140°C and up to 150 bar.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : Experimental studies of thermodynamic properties of R744-oil-mixtures up to 140°C and 150 bar.
  • Identifiant de la fiche : 30014588
  • Langues : Anglais
  • Source : 6th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 16-18, 2015.
  • Date d'édition : 16/04/2015

Liens


Voir d'autres communications du même compte rendu (53)
Voir le compte rendu de la conférence

Indexation