Asymptotic expansions for constant-composition dew-bubble curves near the critical locus

Rainwater, J.

doi:10.1007/bf01133532

Cited by 16 publications

(4 citation statements)

References 15 publications

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“…The critical point for this mixture does not coincide with the maximum temperature point, ∂T S ∂ρ S x = 0, of the liquidvapor coexistence curve. This is why few investigators report this anomalous behavior which has been discussed from a theoretical perspective by Rainwater [57].…”

Section: Resultsmentioning

confidence: 92%

“…9) that would be difficult to detect by means of PVTx experiments alone. The shape of the liquid-vapor coexistence curve near the critical point has two inflection points which bracket the critical point (Rainwater [57]). The critical point for this mixture does not coincide with the maximum temperature point, ∂T S ∂ρ S x = 0, of the liquidvapor coexistence curve.…”

Section: Resultsmentioning

confidence: 99%

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Isochoric Heat Capacity of CO2 + n-Decane Mixtures in the Critical Region

et al. 2006

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The isochoric heat capacity of two binary (CO 2 + n-decane) mixtures (0.095 and 0.178 mole fraction of n-decane) have been measured with a hightemperature, high-pressure, nearly constant volume adiabatic calorimeter. Measurements were made at nineteen near-critical liquid and vapor densities between 87 and 658 kg · m −3 for the composition of 0.095 mole fraction n-decane and at nine densities between 83 and 458 kg · m −3 for the composition of 0.178 mole fraction n-decane. The range of temperatures was 295 to 568 K. These temperature and density ranges include near-and supercritical regions. The measurements were performed in both one-and two-phase regions including the vapor + liquid coexistence curve. The uncertainty of the heat-capacity measurements is estimated to be 2% (coverage factor k = 2). The uncertainty in temperature is 15 mK, and that for density measurements is 0.06%. The liquid and vapor one-(C V 1 , C V 1 ) and two-phase (C V 2 , C V 2 ) isochoric heat capacities, temperatures (T S ), and densities (ρ S ) at saturation were measured by using the well-established method of quasi-static thermograms for each filling density. The critical temperatures (T C ), the critical densities (ρ C ), and the critical pressure (P C ) for the CO 2 + n-decane mixtures were extracted from the isochoric heat-capacity measurements on the coexistence curve. The observed isochoric heat capacity along the critical isochore of the CO 2 + n-decane mixture exhibits a renormalization of the critical behavior of C VX typical for mixtures. The values of the characteristic parameters (K 1 , K 2 ), temperatures (τ 1 , τ 2 ), and the characteristic density differences ( ρ 1 , ρ 2 ) were estimated for the CO 2 + n-decane mixture by using the critical-curve data and the theory of critical phenomena in 730 Polikhronidi, Batyrova, Abdulagatov, and Stepanov binary mixtures. The ranges of conditions were defined on the T-x plane for the critical isochore and the ρ-x plane for the critical isotherm, for which we observed renormalization of the critical behavior for the isochoric heat capacity.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Isochoric Heat Capacity of CO2 + n-Decane Mixtures in the Critical Region

et al. 2006

View full text Add to dashboard Cite

show abstract

“…critical point for this mixture does not coincide with the maximum temperature point, (∂T S /∂ρ S ) x = 0, of the liquid-vapor coexistence curve. This is why few investigations report this anomalous behavior, which has been discussed from a theoretical perspective by Rainwater [37].…”

Section: Resultsmentioning

confidence: 93%

“…9) that would be difficult to detect by means of PVTx experiments alone. The shape of the liquid-vapor coexistence curve near the critical point has two inflection points, which bracket the critical point [37]. The Fig.…”

Section: Resultsmentioning

confidence: 97%