High-pressure speed of sound measurements in methyl nonafluorobutyl ether and ethyl nonafluorobutyl ether

Piñeiro, Manuel M.; Plantier, Frédéric; Bessières, David; Soto, José Luis Legido; Daridon, Jean-Luc

doi:10.1016/j.fluid.2004.06.013

Cited by 20 publications

(14 citation statements)

References 6 publications

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“…The experimental values of speed of sound obtained for water were compared with those from the reference EoS, and the precision (MRD( u )) obtained was better than 0.06%. The values of MRD( u ) obtained in this work are comparable with those from the literature − determined with pulsed ultrasonic systems operating in most of the cases up to pressures lower than those reached in this work. Using the same technique, Gedanitz et al measured sound velocity in fluids up to 30 MPa in the temperature range between 250 and 350 K, and the deviations observed in their measurements are better than those given above.…”

Section: Methodssupporting

confidence: 87%

Accurate Values of Some Thermodynamic Properties for Carbon Dioxide, Ethane, Propane, and Some Binary Mixtures

et al. 2011

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Quasicontinuous PρT data of CO(2), ethane, propane, and the [CO(2) + ethane] mixture have been determined along subcritical, critical, and supercritical regions. These data have been used to develop the optimal experimental method and to determine the precision of the results obtained when using an Anton Paar DMA HPM vibrating-tube densimeter. A comparison with data from reference EoS and other authors confirm the quality of our experimental setup, its calibration, and testing. For pure compounds, the value of the mean relative deviation is MRD(ρ) = 0.05% for the liquid phase and for the extended critical and supercritical region. For binary mixtures the mean relative deviation is MRD(ρ) = 0.70% in the range up to 20 MPa and MRD(ρ) = 0.20% in the range up to 70 MPa. The number of experimental points measured and their just quality have enable us to determine some derivated properties with satisfactory precision; isothermal compressibilities, κ(T), have been calculated for CO(2) and ethane (MRD(κ(T)) = 1.5%), isobaric expasion coefficients, α(P), and internal pressures, π(i), for CO(2) (MRD(α(P)) = 5% and MRD(π(i)) = 7%) and ethane (MRD(α(P)) = 7.5% and MRD(π(i)) = 8%). An in-depth discussion is presented on the behavior of the properties obtained along subcritical, critical, and supercritical regions. In addition, PuT values have been determined for water and compressed ethane from 273.19 to 463.26 K up to pressures of 190.0 MPa, using a device based on a 5 MHz pulsed ultrasonic system (MRD(u) = 0.1%). With these data we have calibrated the apparatus and have verified the adequacy of the operation with normal liquids as well as with some compressed gases. From density and speed of sound data of ethane, isentropic compressibilities, κ(s), have been obtained, and from these and our values for κ(T) and α(P), isobaric heat capacities, C(p), have been calculated with MRD(C(p)) = 3%, wich is within that of the EoS.

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Section: Methodssupporting

confidence: 87%

Accurate Values of Some Thermodynamic Properties for Carbon Dioxide, Ethane, Propane, and Some Binary Mixtures

et al. 2011

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“…4 Among these compounds, segregated HFEs (those including both an aliphatic and a perfluorinated chain) have been pointed out for their promising profile, but experimental thermophysical data are still scarce in the literature, so an adequate description of their thermodynamic behavior is not yet available. In previous works, 5,6 experimental high-pressure densities and speeds of sound, respectively, have been reported for methyl and ethyl nonafluorobutyl ether, and a paper describing the volumetric behavior of pure segregated HFEs using PC-SAFT EOS has also been published. 7 As a continuation of this work, in this paper the mixing behavior of methyl nonafluorobutyl ether is studied through its binary mixture with hexane.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Densities of the Binary Mixture Methyl Nonafluorobutyl Ether + Hexane

et al. 2004

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Densities at high pressures for the binary mixture of methylnonafluorobutyl ether + hexane were measured, as well as those corresponding to both pure fluids, in a pressure range from (0.1 to 25) MPa and at temperatures of (283.15, 298.15, and 313.15) K. A vibrating tube densimeter connected to a highpressure measuring cell was used for the density determination. Experimental data for the mixture were fitted using a modified Tait equation. From this set of experimental data, excess molar volumes of the mixture were calculated and then correlated using a temperature-and pressure-dependent modified Redlich-Kister equation.

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Section: Methodsmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibria at 50.0, 101.3, and 200.0 kPa. Density and Speed of Sound at 101.3 kPa and 298.15 K of Binary Mixtures HFE-7100 + 2-Propanol

et al. 2020

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Isobaric vapor–liquid equilibria (VLE) at 50.0, 101.3, and 200.0 kPa, have been measured for the binary system methyl nonafluorobutyl ether (x 1) HFE-7100 + (1 – x 1) 2-propanol. Thermodynamic consistency was checked by applying the Wisniak point to point and area tests, as well as the Fredenslund point to the point test. Vapor–liquid equilibrium data have been correlated by means of Wilson, NRTL, and UNIQUAC equations. The three binary systems show positive azeotropes at every measured pressure. Densities and speeds of sound were determined experimentally at 101.3 kPa and at 298.15 K. Excess volumes, isentropic compressibilities, and deviations in isentropic compressibility were calculated from experimental data. The Redlich–Kister polynomial was used to correlate excess properties upon mixing, showing a good agreement between experimental and calculated values.

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High-pressure speed of sound measurements in methyl nonafluorobutyl ether and ethyl nonafluorobutyl ether

Cited by 20 publications

References 6 publications

Accurate Values of Some Thermodynamic Properties for Carbon Dioxide, Ethane, Propane, and Some Binary Mixtures

Accurate Values of Some Thermodynamic Properties for Carbon Dioxide, Ethane, Propane, and Some Binary Mixtures

High-Pressure Densities of the Binary Mixture Methyl Nonafluorobutyl Ether + Hexane

Isobaric Vapor–Liquid Equilibria at 50.0, 101.3, and 200.0 kPa. Density and Speed of Sound at 101.3 kPa and 298.15 K of Binary Mixtures HFE-7100 + 2-Propanol

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