Measurement and correlation of the (pressure, density, temperature) relation of carbon dioxide II. Saturated-liquid and saturated-vapour densities and the vapour pressure along the entire coexistence curve

摘要: Abstract Comprehensive measurements of the saturated-liquid and -vapour densities together with vapour pressure pure carbon dioxide were carried out from triple-point temperature (216.580 K) up to about 0.1 K below critical temperature. The constants ( T c = 304.136 K, ϱ 467.6 kg · m −3 , p 7.3773 MPa) isothermal compressibilities in region close phase boundary also determined these measurements. Comparisons experimental results previous studies are presented. Based on new values this work, correlation equations for pressure, density, saturated-vapour density have been established. These compared three current state several saturation properties. Furthermore, influence condensation capillaries pores is described.