Systèmes utilisant des frigorigènes naturels : stabilité chimique.

Chemical stability in systems with natural refrigerants.

Résumé

In the general view, chemical reaction problems in refrigeration systems using natural refrigerants are surprisingly few and less complicated than with CFC, HCFC or HFC. Here, focus is on physical properties. The oil and polymer situation in transcritical carbon dioxide is quite unique. The solubility of the oil will change when carbon dioxide goes supercritical. Ammonia is a well-known refrigerant in large systems. In small systems, some problems arise, especially if the goal in future is hermetic or semihermetic systems. Known and possible chemical reactions in ammonia, carbon dioxide and hydrocarbon systems are discussed and compared to the situation in CFC, HCFC and HFC systems.

Détails

Titre original : Chemical stability in systems with natural refrigerants.
Identifiant de la fiche : 2000-2389
Langues : Anglais
Source : Proceedings of the International symposium on HCFC alternative refrigerants '98: latest technology for higher performance and higher efficiency air conditioning and refrigeration equipment to the 21st century.
Date d'édition : 26/11/1998
Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

Liens

Voir d'autres communications du même compte rendu (31)
Voir le compte rendu de la conférence

Indexation

Thèmes : Ammoniac;
CO2;
Hydrocarbures;
Lubrifiants
Mots-clés : Circuit frigorifique; Lubrifiant; Réaction chimique; Ammoniac; Propriété physique; Propriété chimique; Miscibilité; Hydrocarbure; Frigorigène; CO2