Calorimetric determination of the vapor heat capacity of petroleum cuts

Abstract

The isobaric vapor heat capacity of nine petroleum cuts, the multicomponent system, was measured as a function of temperature at atmospheric pressure by using a flow calorimeter constructed in this laboratory, and which was tested by determining the vapor heat capacity of benzene and benzene + carbon tetrachloride, ethanol + carbon tetrachloride binary mixtures with deviations of less than 1% from the literature data. The changes of the multicomponent vapor heat capacities with the temperature and some basic physical properties of the petroleum cuts were discussed and a correlation was then presented. The experimental data were also compared with the calculation results by three well-known correlations from the literature.