Systemes frigorifiques a compression et leur composants : systemes et machines frigorifiques a compression, bruit et vibrations dans les machines frigorifiques, developpements a prevoir des systemes a compression mecanique (table ronde), sujets d'actualite = Mechanical compression refrigeration systems and components; compression refrigerating systems and machines, noise and vibration in refrigerating machines, future developments in mechanical compression systems (round table discussion), topical problems.