Thermodynamic quantities for propane 3. The thermodynamic behaviour of saturated and compressed liquid propane

In an isochoric study the thermodynamic behaviour of liquid propane was experimentally investigated. Measurements were performed along six isochores with reduced densities from 2.0 to 2.5 at pressures up to 60 MPa. Additional measurements were carried out along the saturated-liquid curve. These results were critically examined and compared with results from the literature. The most reliable measurements were used to established a new equation of state for liquid propane of the Strobridge-type and new Wagner-type equations for vapour pressures and saturated-liquid densities, respectively. In addition isochoric and isobaric heat capacities were evaluated as well as ultrasonic speeds that agree with measurements from the literature to within their experimental uncertainty.