Partager

Tribomètre à ultra-haute pression pour tester un frigorigène au CO2 dans les conditions de compression fidèlement reproduites et rôle du CO2 dans le comportement tribologique des surfaces du compresseur.

Ultra-high pressure tribometer for testing CO2 refrigerant at realistic compressor conditions and the role of CO2 in the tribological behaviour of compressor surfaces.

Auteurs : DEMAS N. G., POLYCARPOU A. A.

Résumé

In recent years, the environmental necessity to replace HFC refrigerants with natural refrigerants like carbon dioxide (CO2) in refrigeration and air-conditioning applications has led to the development of an ultra-high pressure tribometer specifically customized for testing in CO2 environment at pressures comparable to those found in compressors up to 13.8 MPa (2000 psi). It was found that at three different pressures of CO2 under unlubricated conditions the experimental results were similar. However, under boundary-lubricated conditions, the highest pressure had a slightly more positive effect on friction than in the case of the lower pressures. Furthermore, the role of oxygen and in particular CO2 in the tribological performance of compressor surfaces was examined. It was found that the presence of oxygen is beneficial and that the use of CO2 promotes a different wear mechanism than in the case of pure O2 while it is superior to other environments.

Documents disponibles

Format PDF

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 : Ultra-high pressure tribometer for testing CO2 refrigerant at realistic compressor conditions and the role of CO2 in the tribological behaviour of compressor surfaces.
  • Identifiant de la fiche : 2007-1928
  • Langues : Anglais
  • Source : 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Date d'édition : 17/07/2006

Liens


Voir d'autres communications du même compte rendu (157)
Voir le compte rendu de la conférence

Indexation