Hydrotreated Oils for Ammonia Refrigeration
Hydrotreated Oils for Ammonia Refrigeration (1985)-The development of high quality ammonia refrigeration oils using hydrotreated oligomers of alphaolefins (PAO), synthetic hydrocarbon fluids, and from hydrotreated high viscosity-index (HVI) base stocks is described. The characteristics of the base stocks and the relation to performance in ammonia refrigeration systems is discussed. Comparisons to conventional naphthenic refrigeration oils are made. These hydrotreated base stocks provide several performance advantages through better thermal and chemical stability, less solubility with ammonia and excellent viscosity temperature characteristics.
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