Partially halogenated hydrocarbons CHFClCF3, CF3CH3, CF3CHFCHF2, CF3CH2CF3, CHF2CF2CH2F, CF3CH2CHF2, CF3OCHF2: critical temperature, refractive indices, surface tension and estimates of liquid, vapor and critical densities

Schmidt, James W.; Carrillo-Nava, Ernesto; Moldover, Michael R.

doi:10.1016/0378-3812(96)03044-0

Cited by 77 publications

(34 citation statements)

References 10 publications

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“…To decide which model is better, we graphed the comparisons of the equations (Eqs. 19,20) with IAPWS and Pátek et al correlations. The result in the part of the supercooled region can be seen in Figure 1.…”

Section: New Equationmentioning

confidence: 90%

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The temperature dependence of the surface tension of water

Kalová

Mareš

2018

AIP Conference Proceedings

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Section: New Equationmentioning

confidence: 90%

“…, where is the correction to the scaling exponent [18,19]. Schmidt et al [20] suggest the following equation:…”

Section: -2mentioning

confidence: 99%

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The temperature dependence of the surface tension of water

Kalová

Mareš

2018

AIP Conference Proceedings

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“…For the quaternary refrigerant mixture studied in this work, the refractive indices of the pure components have comparable values [10][11][12]; thus, only the scattered light signals from temperature and pressure fluctuations, associated with the thermal diffusivity and speed of sound, respectively, may be resolved.…”

Section: Light Scattering From Bulk Fluidsmentioning

confidence: 99%

Thermophysical Properties of a Quaternary Refrigerant Mixture: Comparison of Dynamic Light Scattering Measurements with a Simple Prediction Method

Fröba

Botero

Kremer³

et al. 2007

Int J Thermophys

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Dynamic light scattering (DLS) has been used for the measurement of several thermophysical properties of a quaternary refrigerant mixture R-125/143a/32/134a in its liquid phase under saturation conditions. The thermal diffusivity and sound speed have been obtained by light scattering from bulk fluids over a temperature range from about 293 K up to the liquid-vapor critical point. By applying the method of DLS to a liquid-vapor interface, also called surface light scattering (SLS), the saturated liquid kinematic viscosity and surface tension can be determined simultaneously. These properties have been measured from about 243 to 343 K. The results are discussed in comparison with literature data and with a simple prediction method based on the mass-weighted properties of the pure components, expressed as functions of the reduced temperature. Once again, the simple prediction method was shown to be applicable for the calculation of different transport and other thermophysical properties of multicomponent refrigerant mixtures and this with sufficiently high accuracy for technical practice. Moreover, the input data for the simple prediction scheme can be reduced without loss of accuracy by treating binary or ternary mixtures as a subset of the multicomponent mixture.

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“…Furthermore, Fig. 5 contains the data calculated by the standard reference database program REFPROP [16], which rests on the prediction method given by Schmidt et al [27]. Within the combined measurement uncertainties, good agreement between the data obtained from SLS and those of Lin and Duan [25] and of Duan et al [26] can only be found for temperatures above 280 K. In contrast, deviations of the data calculated by the program REFPROP [16] from that of this work are observed to decrease at lower temperatures.…”

Section: Kinematic Viscosity and Surface Tensionmentioning

confidence: 99%

Thermal Diffusivity, Sound Speed, Viscosity, and Surface Tension of R227ea (1,1,1,2,3,3,3-Heptafluoropropane)

2006

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The purpose of the experimental investigations described in the present paper was to carry out an extensive characterization of R227ea (1,1,1,2,3,3,3-heptafluoropropane), a working fluid that has gained increasing importance in refrigeration and air conditioning technology fields. With dynamic light scattering (DLS), a non-intrusive, laser-optical technique, the thermal diffusivity and sound speed of the liquid and vapor phases, as well as the surface tension and kinematic viscosity of the liquid phase, could be determined with high accuracy at saturation conditions, over a wide temperature range starting at 253.15 K and extending to the critical point.

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Partially halogenated hydrocarbons CHFClCF3, CF3CH3, CF3CHFCHF2, CF3CH2CF3, CHF2CF2CH2F, CF3CH2CHF2, CF3OCHF2: critical temperature, refractive indices, surface tension and estimates of liquid, vapor and critical densities

Cited by 77 publications

References 10 publications

The temperature dependence of the surface tension of water

The temperature dependence of the surface tension of water

Thermophysical Properties of a Quaternary Refrigerant Mixture: Comparison of Dynamic Light Scattering Measurements with a Simple Prediction Method

Thermal Diffusivity, Sound Speed, Viscosity, and Surface Tension of R227ea (1,1,1,2,3,3,3-Heptafluoropropane)

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