Measurement of Specific Heat Capacity of Crude Oil by Differential Scanning Calorimetry

The specific heat capacities of glycol from 0℃ to 60 ℃ were measured at different experiment conditions by DSC-204 type differential scanning calorimetry(DSC).The optimum experiment condition for specific heat capacity measurement of crude oil was selected according to the measured results.The accidental errors and system errors of specific heat capacity for crude oil from DSC measurement were analyzed.The accidental errors of specific heat capacity from DSC measurement were basically within 5% for crude oils from 23 different areas in the selected optimum experiment condition.The system errors of specific heat capacity for crude oil from DSC measurement and adiabatic method were compared.The relative error of the measured specific heat capacities for 5 oil samples from both measuring methods was less than 7%.and the relative error was below 3% after being corrected.The experimental results indicate that the authenticity and repeatability of using DSC measuring specific heat capacity for crude oil can meet the demands of production.