Thermodynamic Properties of 1-Alkenes in the Liquid State: 1-Tetradecene

Abstract

Thermodynamic properties of liquid 1-tetradecene have been calculated using a grid algorithm based on sound-speed data, obtained in a previous study over a wide range of temperatures and pressures. Since additional information such as densities and isobaric heat capacities at atmospheric pressure are needed for these calculations, the most reliable literature data and those obtained on the basis of structure-property correlations in the homologous series of 1-alkenes were used. Detailed tables, containing values of sound speed, density, isobaric, and isochoric heat capacities, isobaric expansion coefficient, isothermal compressibility, enthalpy, and entropy in the range of temperatures from 303 to 433 K and at pressures from 0.1 to 100 MPa, are given.

Implementation of PC-SAFT and SAFT+Cubic for modeling thermodynamic properties of eight 1-alkenes and their mixtures

“…As indicated by Valencia et al [43], the latter method yields uncertainties up to 3%. In our case Khasanshin et al [19,20] have derived the values of j T from sound velocities and Bulaev [23] -from caloric data. As seen (figure 12), both methods exhibit mutual deviations.…”

“…The last two publications include the comprehensive dataset on auxiliary properties such as sound velocity, heat capacities and compressibilities as well. It should be pointed out that the lighter n-alkenes sound velocity data of Khasanshin et al [21] and Zotov et al [22] are in excellent mutual agreement, which is not a case of the isobaric heat capacities derived by Khasanshin et al [19,20] and measured by Bulaev [23]. The latter sources exhibit substantial mutual deviations of isothermal compressibilities as well.…”

“…In addition, the elevated pressure density data on 1-Octene and its equimolar mixture with n-Octane have been published by Dymond et al [17,18]. The density data of 1-tetradecene and 1-hexadecene have been determined by Khasanshin et al [19,20]. The last two publications include the comprehensive dataset on auxiliary properties such as sound velocity, heat capacities and compressibilities as well.…”

Composition measurements of crude oil and process water emulsions using thick-film ultrasonic transducers

“…Table 4 contains the values of specific heat capacities for selected hydrocarbons obtained from Refs. [17][18][19][20] and for distilled water [17], at pressure 0.1 MPa. Crude oil such as used in the experiments reported here is usually a mixture of various hydrocarbons and it is expected that its properties will be broadly similar.…”

“…It can be seen from Table 4 that C p for hydrocarbons is typically in the range of 2.2-2.4 kJ kg −1 K −1 while the ratio of the specific heat capacities, µ, is typically in the range 1.18-1.30. Table 4 Numerical values of specific heat capacities for selected hydrocarbons [17][18][19][20] and distilled water [17], at pressure 0.1 MPa The latter is significant from the viewpoint of model (v) because the magnitude of parameter θ (see Table 3) depends on the magnitude of factor (µ − 1), which is relatively small for fluids such as distilled water but becomes very large for hydrocarbons discussed here. Table 4.…”