Thermodynamic properties of trifluoroethene (R1123): (p, ρ, T) behavior and fundamental equation of state

Akasaka, Ryo; Higashi, Yukihiro; Sakoda, Naoya; Fukuda, Sho; Lemmon, Eric W.

doi:10.1016/j.ijrefrig.2020.07.011

Cited by 22 publications

(4 citation statements)

References 26 publications

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“…Figure 1 shows the experimental apparatus used in this work for measuring the (p, ρ, T ) behavior based on the isochoric method. This apparatus was successfully employed in our previous studies for pure fluids and mixtures, e.g., Higashi et al [10], Higashi and Sakoda [11], and Akasaka et al [12,13]. These references discuss the details of its structure, measurement procedure, and expected uncertainties, which are summarized below.…”

Section: Methodsmentioning

confidence: 99%

Vapor-phase (p, ρ, T ) Behavior of Difluoromethane (R32)+ Trifluoroiodomethane (R13I1), Pentafluoroethane(R125) + R13I1, and R32 + R125 + R13I1 mixtures: Experimental Measurements Based on the IsochoricMethod and Verification with a Generalized VirialEquation of State

Akasaka

Kayukawa

Higashi

2022

Preprint

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Mixing R13I1 with flammable or weakly-flammable refrigerants is an approach to reduce both their flammability and global warming potential(GWP); however, thermodynamic property data of mixtures containing R13I1are currently scarce. In this work, experimental measurements were performed for the (p, ρ, T) behavior in the vapor phase of R32 + R13I1, R125 + R13I1,and R32 + R125 + R13I1 mixtures. The measurements were made at temperatures from 300 K to 400 K and pressures up to 6.3 MPa, and 44 data points were obtained for the R32 + R13I1 mixture and 25 data points for theR125 + R13I1 mixture. For the ternary mixture, 25 data points were obtained at the composition of R466A (R32:R125:R13I1 = 49:11.5:39.5 mass%). The validity of the experimental data was verified by comparing to the virial equation of state generalized for nonpolar or weakly polar fluids based on the corresponding states principle. The comparison showed that deviations between the experimental and calculated pressures are generally minor and less scattered; this suggests that the (p, ρ, T) data obtained in this work are reasonable in terms of the law of corresponding states.

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Section: Methodsmentioning

confidence: 99%

Vapor-phase (p, ρ, T ) Behavior of Difluoromethane (R32)+ Trifluoroiodomethane (R13I1), Pentafluoroethane(R125) + R13I1, and R32 + R125 + R13I1 mixtures: Experimental Measurements Based on the IsochoricMethod and Verification with a Generalized VirialEquation of State

Akasaka

Kayukawa

Higashi

2022

Preprint

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“…This apparatus was often employed in our previous studies for pure fluids and mixtures. For example, Higashi et al, Higashi and Sakoda, and Akasaka et al performed the ( p , ρ, T ) measurement with this apparatus for cis -1,3,3,3-tetrafluoropropene [R1234ze(Z)], 1,1,1,3,3-pentafluoropropane (R245fa), 3,3,3-trifluoropropene (R1243zf), and trifluoroethene (R1123). Higashi studied the ( p , ρ, T ) behavior of a mixture of 50 mass% R1234yf and 50 mass% trans -1,3,3,3-tetrafluoropropene [R1234ze(E)].…”

Section: Experimental Sectionmentioning

confidence: 99%

“…The formulation presented here basically follows the fashion of the multifluid approximation based on the Kunz-Wagner (KW) mixture model originally developed by Kunz et al and extended by Kunz and Wagner . Similar formulations were often made in the recent developments of accurate mixture models, for example, Akasaka, Akasaka et al, Gernert and Span, Thol et al., Zhong et al, Akasaka et al, and Beckmüller et al REFPROP 10.0 normally calculates the thermodynamic properties of mixtures with the KW mixture model.…”

Section: Mixture Modelmentioning

confidence: 99%

Thermodynamic Properties of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and Propane (R290) Mixtures: (p, ρ, T) Behavior, Saturated Liquid and Vapor Densities, Critical Parameters, and a Mixture Model

et al. 2022

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The (p, ρ, T) behavior of a refrigerant mixture of 50.00 mass% R1234yf and 50.00 mass% R290 was measured with the isochoric method. Along the six isochores (60, 121, 305, 500, 550, and 600 kg·m–3), a total of 40 single-phase (p, ρ, T) data points were obtained at temperatures from 330 to 400 K and pressures up to 6.6 MPa. In addition, the phase boundary of this mixture was experimentally investigated by visual observation of the vapor–liquid meniscus, and a total of 17 saturated densities and the critical parameters were obtained. Additionally, five saturated densities were also determined from the inflection points of the isochores. According to the multifluid approximation approach, a thermodynamic mixture model was formulated for R1234yf/290 mixtures. The parameters of the mixture model were determined by fitting the experimental data obtained in this work and those available in the literature. Expected uncertainties (k = 2) in calculated values with the mixture model are 0.2% for bubble and dew point pressures, 0.2% for liquid densities, 0.4% for vapor densities, 1% for saturated liquid and vapor densities, and 1.5% for isochoric heat capacities in the liquid phase. The mixture model can also be applied to regions away from the fitted experimental data with reasonable accuracy because it extrapolates well to higher temperatures and pressures, and to lower temperatures.

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“…The authors reported the experimental data of fundamental thermodynamic properties with respect to pure HFO refrigerants such as R1234yf (2,3,3,3-tetrafluoropropene; CF 3 CFCH 2 ), − R1234ze(E) ( trans -1,3,3,3-tetrafluoropropene; (E)CF 3 CHCHF), − R1234ze(Z) ( cis -1,3,3,3-tetrafluoro-propene; (Z)CF 3 CHCHF), − R1224yd(Z) ( cis -1-chloro-2,3,3,3-tetrafluoropropene; CF 3 CFCHCl), , R1243zf (3,3,3-trifluoropropene; CF 3 CHCH 2 ), , and R1123 (trifluoroethene; CF 2 CHF). − In this study, the measurements of PvT properties, vapor pressures, saturated densities, and critical parameters for trans -1,1,1,4,4,4-hexafluoro-2-butene (R1336mzz(E); CF 3 CHCHCF 3 ) are newly reported. R1336mzz(E) has a low GWP (lifetime adjusted value is 14) and zero ODP and is non-flammable.…”

Section: Introductionmentioning

confidence: 99%

Measurements of PvT Properties, Vapor Pressures, Saturated Densities, and Critical Parameters for trans-1,1,1,4,4,4-Hexafluoro-2-butene (R1336mzz(E))

2020

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Measurements of PvT properties, vapor pressures, saturated densities, and critical parameters were carried out for trans-1,1,1,4,4,4-hexafluoro-2-butene (R1336mzz(E); CF3CHCHCF3). Thirty-nine PvT property data in the single phase region along seven isochores for R1336mzz(E) were obtained in the temperatures between 333 and 410 K, pressures up to 5681 kPa, and densities between 52 and 1216 kg·m–3 by the isochoric method. Twenty-six vapor pressure data for R1336mzz(E) were obtained in the temperatures between 287 K and the critical temperature and at pressures up to the critical pressure. Twenty-one saturated density data for R1336mzz(E) were obtained by the observation of meniscus disappearance near the critical point and by the break point of isochores between 52 and 1216 kg·m–3 and the vapor-pressure curve. On the basis of these measurements, the critical parameters for R1336mzz(E) were determined as T c = 403.53 ± 0.01 K, ρc = 513 ± 3 kg·m–3, and P c = 2779.2 ± 2.0 kPa. The vapor–pressure correlation is also discussed.

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Thermodynamic properties of trifluoroethene (R1123): (p, ρ, T) behavior and fundamental equation of state

Cited by 22 publications

References 26 publications

Vapor-phase (p, ρ, T ) Behavior of Difluoromethane (R32)+ Trifluoroiodomethane (R13I1), Pentafluoroethane(R125) + R13I1, and R32 + R125 + R13I1 mixtures: Experimental Measurements Based on the IsochoricMethod and Verification with a Generalized VirialEquation of State

Vapor-phase (p, ρ, T ) Behavior of Difluoromethane (R32)+ Trifluoroiodomethane (R13I1), Pentafluoroethane(R125) + R13I1, and R32 + R125 + R13I1 mixtures: Experimental Measurements Based on the IsochoricMethod and Verification with a Generalized VirialEquation of State

Thermodynamic Properties of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and Propane (R290) Mixtures: (p, ρ, T) Behavior, Saturated Liquid and Vapor Densities, Critical Parameters, and a Mixture Model

Measurements of PvT Properties, Vapor Pressures, Saturated Densities, and Critical Parameters for trans-1,1,1,4,4,4-Hexafluoro-2-butene (R1336mzz(E))

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