The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform

Kyaw Thu - One of the best experts on this subject based on the ideXlab platform.

G. Di Nicola - One of the best experts on this subject based on the ideXlab platform.

  • two phase and Vapor phase thermophysical property pvtz measurements of the difluoromethane trans 1 3 3 3 tetrafluoroprop 1 ene binary system
    Journal of Chemical & Engineering Data, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Uthpala A Perera, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu
    Abstract:

    In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the Superheated Vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12...

  • Two-Phase and Vapor-Phase Thermophysical Property (pvTz) Measurements of the Difluoromethane + trans-1,3,3,3-Tetrafluoroprop-1-ene Binary System
    Journal of Chemical & Engineering Data, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Uthpala A Perera, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu
    Abstract:

    In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the Superheated Vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12...

  • Vapor phase and two-phase PvTz measurements of difluoromethane + 2,3,3,3-tetrafluoroprop-1-ene
    The Journal of Chemical Thermodynamics, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Mariano Pierantozzi, Gianluca Coccia, J. Steven Brown
    Abstract:

    Abstract This paper provides 217 PvTz points for the binary systems of difluoromethane (R32) and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) both in the two-phase and Superheated Vapor regions. The R32 + R1234yf data were measured along eleven isochores (0.029794, 0.029936, 0.030724, 0.032113, 0.061323, 0.063915, 0.102150, 0.111536, 0.116592, 0.144796, 0.280627) m3·kg−1 for temperatures from (263 to 383) K for eleven R32 mole fractions (0.1214, 0.1330, 0.1792, 0.2712, 0.3432, 0.5229, 0.6231, 0.6489, 0.7020, 0.8122, 0.9460). From the measurements in the two-phase region, the Vapor-liquid equilibrium behavior of the studied binary systems was derived by applying the flash method with the Carnahan–Starling–De Santis equation of state, the Peng–Robinson equation of state and a two-parameter cubic equation of state proposed by Stryjek. The representation of the Vapor – liquid equilibrium for the studied binary systems obtained from the isochoric data is consistent with the experimental Vapor – liquid equilibrium data available in the literature. The Superheated Vapor data were correlated using the virial equation of state, in addition to the aforementioned equations of state. The Vapor phase data showed good agreement with the values calculated with the equations of state and the predictions provided by REFPROP 10.0.

  • PVTx Measurements of the Carbon Dioxide + 2,3,3,3-Tetrafluoroprop-1-ene Binary System
    Fluid Phase Equilibria, 2013
    Co-Authors: G. Di Nicola, C. Di Nicola, Alessia Arteconi, Roman Stryjek
    Abstract:

    In this work, the PVTx properties of carbon dioxide + 2,3,3,3-tetrafluoroprop-1-ene were measured by an isochoric apparatus. The experiment covered both two-phase and Superheated Vapor regions and have been performed a total of eight isochores within a temperature range that spanned from (223 to 373) K and within a pressure range from (62 to 2292) kPa. Our experimental results were correlated with the Carnahan–Starling–DeSantis equation of state (CSD EoS) and predicted with REFPROP 9.0. Coefficients for the CSD EoS were derived from the experimental data. Results in the two-phase region showed a good agreement with the CSD equation and a strong disagreement with the REFPROP 9.0. Data in the Superheated Vapor region were also predicted by extrapolating coefficients for the CSD EoS at higher temperatures. The agreement with CSD EoS for the Superheated Vapor region experimental data was also good. The Vapor–liquid equilibrium (VLE) behavior of the studied binary system from the experimental data was also der...

  • Isochoric PVTx Measurements for the CO2 + N2O System
    Journal of Chemical & Engineering Data, 2005
    Co-Authors: G. Di Nicola, Giuliano Giuliani, Fabio Polonara, Roman Stryjek
    Abstract:

    Measurements are reported for the CO2 + N2O system in both the two-phase and the Superheated Vapor regions using an isochoric apparatus. The experiment covered a temperature range from (214 to 358)...

Roman Stryjek - One of the best experts on this subject based on the ideXlab platform.

  • PVTx Measurements of the Carbon Dioxide + 2,3,3,3-Tetrafluoroprop-1-ene Binary System
    Fluid Phase Equilibria, 2013
    Co-Authors: G. Di Nicola, C. Di Nicola, Alessia Arteconi, Roman Stryjek
    Abstract:

    In this work, the PVTx properties of carbon dioxide + 2,3,3,3-tetrafluoroprop-1-ene were measured by an isochoric apparatus. The experiment covered both two-phase and Superheated Vapor regions and have been performed a total of eight isochores within a temperature range that spanned from (223 to 373) K and within a pressure range from (62 to 2292) kPa. Our experimental results were correlated with the Carnahan–Starling–DeSantis equation of state (CSD EoS) and predicted with REFPROP 9.0. Coefficients for the CSD EoS were derived from the experimental data. Results in the two-phase region showed a good agreement with the CSD equation and a strong disagreement with the REFPROP 9.0. Data in the Superheated Vapor region were also predicted by extrapolating coefficients for the CSD EoS at higher temperatures. The agreement with CSD EoS for the Superheated Vapor region experimental data was also good. The Vapor–liquid equilibrium (VLE) behavior of the studied binary system from the experimental data was also der...

  • PVT properties of an alternative biofuel: dimethyl ether
    Journal of Thermal Analysis and Calorimetry, 2009
    Co-Authors: Alessia Arteconi, G. Di Nicola, Matteo Moglie, Giulio Santori, Roman Stryjek
    Abstract:

    Dimethyl ether is an important chemical material and it has many engineering applications. It is a clean and economical alternative fuel and an ozone-friendly refrigerant. In this work, its PVT properties have been object of study. In particular, the experimental work was performed both in the two-phase region and in the Superheated Vapor region phase by means of the isochoric method. The isochoric measurements were carried out at temperatures from 219 K to 363 K and at pressures from 22 kPa up to 1,740 kPa. A total of 159 points, both in the two phase (71 points) and in the Superheated Vapor region (88 points) were obtained. The present experimental PVT data contribute to the deeper knowledge of the behaviour of the fluid both in the Superheated vapour and in the saturation pressure region and to the development of a new equation of state.

  • Isochoric PVTx Measurements for the CO2 + N2O System
    Journal of Chemical & Engineering Data, 2005
    Co-Authors: G. Di Nicola, Giuliano Giuliani, Fabio Polonara, Roman Stryjek
    Abstract:

    Measurements are reported for the CO2 + N2O system in both the two-phase and the Superheated Vapor regions using an isochoric apparatus. The experiment covered a temperature range from (214 to 358)...

  • PVTx Measurements for the R116 + CO2 and R41 + CO2 Systems. New Isochoric Apparatus
    Journal of Chemical & Engineering Data, 2005
    Co-Authors: G. Di Nicola, Fabio Polonara, R. Ricci, Roman Stryjek
    Abstract:

    A new isochoric apparatus was built for PVTx measurements in an extended temperature range from (210 to 360) K and at pressures up to 6.0 MPa. The setup was used to measure PVTx properties for the R116 + CO2 and R41 + CO2 systems, both in the two-phase and Superheated Vapor regions. The binary interaction parameters were derived from experimental data in the two-phase region by applying the flash method and the Carnahan−Starling−DeSantis equation of state (CSD EOS). The dew-point parameters were found by interpolating the P−T isochoric sequences, again applying the CSD EOS. A composition-dependent mixing rule implemented in the CSD EOS improved the VLE data representation of both binary systems. The resulting binary interaction parameters were used for VLE parameter derivation. The Superheated Vapor region data were compared with those obtained by the Burnett method and using REFPROP 7.

  • P−V−T−x and Vapor−Liquid Equilibrium Properties of Pentafluoroethane (R125) + 1,1,1,3,3,3-Hexafluoroethane (R236fa) and 1,1,1,2-Tetrafluoroethane (R134a) + R236fa Systems Derived from Isochoric Measurements
    Journal of Chemical & Engineering Data, 2001
    Co-Authors: Giovanni Di Nicola And, Fabio Polonara, Roman Stryjek
    Abstract:

    P−V−T−x measurements were performed using a constant-volume apparatus for the pentafluoroethane (R125) + 1,1,1,3,3,3-hexafluoropropane (R236fa) and 1,1,1,2-tetrafluoroethane (R134a) + 1,1,1,3,3,3-hexafluoropropane (R236fa) systems, in a temperature range of (253−372) K and a pressure range of (113−2360) kPa. Experimental data were collected on three different compositions for each of the systems. Eight expansion series with a total of 121 data points and nine expansion series with 110 data points were performed, respectively, for the R125 + R236fa and R134a + R236fa systems, both within the Vapor−liquid equilibrium (VLE) boundary and in the Superheated Vapor region. The data in the Superheated Vapor region were interpreted using tried and tested correlating methods for the second and third virial coefficients. The VLE parameters were derived by applying two methods:  (1) The flash method enabled VLE parameters to be derived directly from P−V−T−z data within the VLE boundary by applying the Carnahan−Starli...

Sebastiano Tomassetti - One of the best experts on this subject based on the ideXlab platform.

  • two phase and Vapor phase thermophysical property pvtz measurements of the difluoromethane trans 1 3 3 3 tetrafluoroprop 1 ene binary system
    Journal of Chemical & Engineering Data, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Uthpala A Perera, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu
    Abstract:

    In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the Superheated Vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12...

  • Two-Phase and Vapor-Phase Thermophysical Property (pvTz) Measurements of the Difluoromethane + trans-1,3,3,3-Tetrafluoroprop-1-ene Binary System
    Journal of Chemical & Engineering Data, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Uthpala A Perera, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu
    Abstract:

    In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the Superheated Vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12...

  • Vapor phase and two-phase PvTz measurements of difluoromethane + 2,3,3,3-tetrafluoroprop-1-ene
    The Journal of Chemical Thermodynamics, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Mariano Pierantozzi, Gianluca Coccia, J. Steven Brown
    Abstract:

    Abstract This paper provides 217 PvTz points for the binary systems of difluoromethane (R32) and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) both in the two-phase and Superheated Vapor regions. The R32 + R1234yf data were measured along eleven isochores (0.029794, 0.029936, 0.030724, 0.032113, 0.061323, 0.063915, 0.102150, 0.111536, 0.116592, 0.144796, 0.280627) m3·kg−1 for temperatures from (263 to 383) K for eleven R32 mole fractions (0.1214, 0.1330, 0.1792, 0.2712, 0.3432, 0.5229, 0.6231, 0.6489, 0.7020, 0.8122, 0.9460). From the measurements in the two-phase region, the Vapor-liquid equilibrium behavior of the studied binary systems was derived by applying the flash method with the Carnahan–Starling–De Santis equation of state, the Peng–Robinson equation of state and a two-parameter cubic equation of state proposed by Stryjek. The representation of the Vapor – liquid equilibrium for the studied binary systems obtained from the isochoric data is consistent with the experimental Vapor – liquid equilibrium data available in the literature. The Superheated Vapor data were correlated using the virial equation of state, in addition to the aforementioned equations of state. The Vapor phase data showed good agreement with the values calculated with the equations of state and the predictions provided by REFPROP 10.0.

Mariano Pierantozzi - One of the best experts on this subject based on the ideXlab platform.

  • two phase and Vapor phase thermophysical property pvtz measurements of the difluoromethane trans 1 3 3 3 tetrafluoroprop 1 ene binary system
    Journal of Chemical & Engineering Data, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Uthpala A Perera, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu
    Abstract:

    In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the Superheated Vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12...

  • Two-Phase and Vapor-Phase Thermophysical Property (pvTz) Measurements of the Difluoromethane + trans-1,3,3,3-Tetrafluoroprop-1-ene Binary System
    Journal of Chemical & Engineering Data, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Uthpala A Perera, Mariano Pierantozzi, Yukihiro Higashi, Kyaw Thu
    Abstract:

    In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the Superheated Vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12...

  • Vapor phase and two-phase PvTz measurements of difluoromethane + 2,3,3,3-tetrafluoroprop-1-ene
    The Journal of Chemical Thermodynamics, 2020
    Co-Authors: Sebastiano Tomassetti, G. Di Nicola, Mariano Pierantozzi, Gianluca Coccia, J. Steven Brown
    Abstract:

    Abstract This paper provides 217 PvTz points for the binary systems of difluoromethane (R32) and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) both in the two-phase and Superheated Vapor regions. The R32 + R1234yf data were measured along eleven isochores (0.029794, 0.029936, 0.030724, 0.032113, 0.061323, 0.063915, 0.102150, 0.111536, 0.116592, 0.144796, 0.280627) m3·kg−1 for temperatures from (263 to 383) K for eleven R32 mole fractions (0.1214, 0.1330, 0.1792, 0.2712, 0.3432, 0.5229, 0.6231, 0.6489, 0.7020, 0.8122, 0.9460). From the measurements in the two-phase region, the Vapor-liquid equilibrium behavior of the studied binary systems was derived by applying the flash method with the Carnahan–Starling–De Santis equation of state, the Peng–Robinson equation of state and a two-parameter cubic equation of state proposed by Stryjek. The representation of the Vapor – liquid equilibrium for the studied binary systems obtained from the isochoric data is consistent with the experimental Vapor – liquid equilibrium data available in the literature. The Superheated Vapor data were correlated using the virial equation of state, in addition to the aforementioned equations of state. The Vapor phase data showed good agreement with the values calculated with the equations of state and the predictions provided by REFPROP 10.0.