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Specific Heat Capacity Of Some Mineral, Synthetic And Semi-Synthetic Automotive Lubricant Oils After Thermal Degradation

Jose Carlos Oliveira Santos, Antonio Gouveia Souza

The knowledge of the specific heat capacity of the derived of the petroleum and of its mixtures it is of great practical importance in the branch of the petrochemical engineering, because it is associated with the refinery operations of petroleum and other correlated processes. This work aims to characterize thermal degradation process of automotive mineral, synthetic and semi-synthetic lubricant oils, in relation to its specific heat capacities. Lubricants were degraded at temperatures varying from 150 to 210ºC, and times of 1 to 48 hours. After degradation, oils were characterized by DSC. The analyzed lubricating oils present an increase in your heat transfer capacity in function of the increase of the temperature.