Sound Velocity in Liquid 1-Alkenes

The current study has aimed at developing an approach replacing the lists of the compound-specific molecular parameters attached to perturbed chain-statistical association fluid theory (PC-SAFT) by the entirely transparent and universal method for their derivation. The proposed approach requires limited data for the numerical solution of the PC-SAFT parameters, namely, the critical constants and the triple point liquid density. Its implementation has necessitated a careful re-evaluation of part of the PC-SAFT universal parameters matrix and some additional revisions. The resulting model appears to be virtually free of several undesired numerical pitfalls characteristic for PC-SAFT. The proposed equation of state (EoS) has been implemented for modeling data of nonpolar substances such as the light compounds, n-alkanes, and 1-alkenes and their mixtures. Using a large experimental database (more than 6000 points) it has been demonstrated that it exhibits remarkable precision in predicting the high-pressure liquid phase densities and sound velocities, with AAD hardly exceeding 3% even in the cases of complex asymmetric mixtures. However, a major drawback of the proposed model is a poor accuracy of predicting the vacuum vapor pressures of heavy compounds away from their critical points.

show abstract

“…Sound velocities in 1-alkenes. Points, experimental data. ,,, Lines, predictions of the proposed approach.…”

Section: Resultsmentioning

confidence: 99%

Standardized Critical Point-Based Numerical Solution of Statistical Association Fluid Theory Parameters: The Perturbed Chain-Statistical Association Fluid Theory Equation of State Revisited

Polishuk

2014

Ind. Eng. Chem. Res.

109

125

View full text Add to dashboard Cite

show abstract

“…The variation of these experimental data consists of 0.5-1%. However, the T-H-E-based prediction, as well as the Hildebrandbased one, is less than 1% for both sets of data (for the experimental data taken from (Khasanshin et al, 2005) the triplet of AAD is (1.66, 0.6, 0.86), i.e., slightly better for (8)-(9) and slightly worse for (11)). The rest two liquids, cyclohexane and cyclohexene, deviate from the described regularity.…”

Section: Resultsmentioning

confidence: 83%

Can DIPPR Database be Used for an Estimation of the Speed of Sound? A Case Study of Liquid Hydrocarbons

Postnikov

2016

Archives of Acoustics

View full text Add to dashboard Cite

The paper analyses a possibility of utilising the information which is contained in DIPPR database for a calculation of the speed of sound, which is absent there. As an example, liquid hydrocarbons are considered: n-hexane, 1-hexene, cyclohexane, cyclohexene, benzene, and 1-hexanols, as well as representatives of n-alkanes with various hydrocarbon chain lengths. It is shown that the Brelvi-O'Connell correlation for the reduced bulk modulus, supplied with the correlations for the internal pressure at the normal boiling temperature, results in the values having accuracy comparable with other DIPPR data for the region below the boiling point bounded by the values of the reduced density around ρr ≈ 3.5. The source of errors originated from the Brelvi-O'Connell correlation for larger reduced densities is discussed.

show abstract

“…Experimental results for 1-tetradecene (72 sound-speed values) in the investigated range have been obtained for the first time and can be found elsewhere [3].…”

Section: Sound-speed Datamentioning

confidence: 99%

“…As input data for sound speed, we used the results of our previous study [3] carried out on an ultrasound apparatus using the pulse-echo overlap method. The measurements were made along eight isotherms: 303.15, 313.15, 333.15, 353.15, 373.15, 393.15, 413.15, and 433.15 K both under pressurization from 0.1 to 100.1 MPa and under decompression from 100.1 to 0.1 MPa.…”

Section: Sound-speed Datamentioning

confidence: 99%

“…(1) have been calculated along with the values of the exponents n = −0.63 and k = 3.1 and the coefficients of Eqs. (2)(3)(4). The values of these coefficients are given in Table I. Equation (1) describes the initial values of the sound speed at T = 303 to 433 K and p = 0.1 to 100 MPa with standard and maximum deviations, respectively, of 0.005 and 0.014%.…”

Section: Sound-speed Datamentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2006

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Sound Velocity in Liquid 1-Alkenes

Cited by 12 publications

References 9 publications

Standardized Critical Point-Based Numerical Solution of Statistical Association Fluid Theory Parameters: The Perturbed Chain-Statistical Association Fluid Theory Equation of State Revisited

Standardized Critical Point-Based Numerical Solution of Statistical Association Fluid Theory Parameters: The Perturbed Chain-Statistical Association Fluid Theory Equation of State Revisited

Can DIPPR Database be Used for an Estimation of the Speed of Sound? A Case Study of Liquid Hydrocarbons

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

Contact Info

Product

Resources

About