Theme 4 HR Commission E 2 Paper THE USE OF HFC-134a WITH MINERAL OIL IN HERMETIC COOLING ... systems based on the refrigerant CFC-12 several solutions are already available, both for the aquot;mid termaquot; as well as for the aquot;long termaquot;. ... For many systems it is cost effective and practical to change the mineral oil and retrofit to HFC- 134a. ... Therefore, a solution to the lubricant return problem is the addition of a small quantity of a fluid, which is very well soluble in mineral oil.
|Title||:||Proceedings of the ... International Congress of Refrigeration|