The Experts below are selected from a list of 3996 Experts worldwide ranked by ideXlab platform
Maoqiong Gong - One of the best experts on this subject based on the ideXlab platform.
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Measurements of Bubble Point Pressure and saturated liquid density for ((R1234yf + R290))
The Journal of Chemical Thermodynamics, 2018Co-Authors: Quan Zhong, Huiya Li, Jun Shen, Xueqiang Dong, Yanxing Zhao, Haiyang Zhang, Maoqiong GongAbstract:Abstract In this paper, Bubble Point Pressures and saturated liquid densities of {2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) + propane (R290)} binary mixtures were measured using a compact single-sinker densimeter. Measurements were carried out over temperatures from (255.048 to 300.135) K and mole fractions of R1234yf at (0.113, 0.217, 0.322, 0.422, 0.533, 0.625). The experimental standard uncertainties were estimated to be less than 5 mK for the temperature, 2 kPa for the Pressure, 0.003 for the mole fraction and 0.02% for the density. The experimental Bubble Point Pressures were correlated by the Peng-Robinson equation of state, while the experimental saturated liquid densities were represented with the VDNS and our modified Rackett equations. In addition, saturated liquid densities of azeotropy Point at temperatures T = (253.150, 263.150, 273.150, 283.150 and 293.150) K were determined based on our previous and present work.
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measurements of Bubble Point Pressure and saturated liquid density for r1234yf r290
The Journal of Chemical Thermodynamics, 2018Co-Authors: Qua Zhong, Ju She, Xueqiang Dong, Yanxing Zhao, Hao Guo, Haiyang Zhang, Maoqiong GongAbstract:Abstract In this paper, Bubble Point Pressures and saturated liquid densities of {2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) + propane (R290)} binary mixtures were measured using a compact single-sinker densimeter. Measurements were carried out over temperatures from (255.048 to 300.135) K and mole fractions of R1234yf at (0.113, 0.217, 0.322, 0.422, 0.533, 0.625). The experimental standard uncertainties were estimated to be less than 5 mK for the temperature, 2 kPa for the Pressure, 0.003 for the mole fraction and 0.02% for the density. The experimental Bubble Point Pressures were correlated by the Peng-Robinson equation of state, while the experimental saturated liquid densities were represented with the VDNS and our modified Rackett equations. In addition, saturated liquid densities of azeotropy Point at temperatures T = (253.150, 263.150, 273.150, 283.150 and 293.150) K were determined based on our previous and present work.
Tomoya Tsuji - One of the best experts on this subject based on the ideXlab platform.
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Bubble Point Pressure and some dielectric properties of propane + ethanol liquid mixture at 303.2 K
Kagaku Kogaku Ronbunshu, 2018Co-Authors: Yusuke Koshiba, Tomoya Tsuji, Taka-aki Hoshina, Masaki Okada, Toshihiko HiakiAbstract:Bubble Point Pressure and dielectric spectra of propane+ethanol liquid mixtures were measured at 303.2 K. The Bubble Point Pressure was measured by use of a static type apparatus. The experimental Pressure increased with increase in the mole fraction of propane, and the tendencies were well correlated with NRTL equations. The dielectric constants decreased with the mole fraction of propane. Otherwise the dielectric relaxation times showed convex shapes for the mole fraction of propane. The excess dielectric constants and the excess inverse dielectric relaxation times showed negative values over the whole range of the propane concentration. These phenomena suggested that hydrophobic interactions and dipole-dipole interactions play important roles in determining the dielectric properties of propane+ethanol liquid mixtures at the experimental temperature and Pressure.
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Bubble Point Pressure and some dielectric properties of propane ethanol liquid mixture at 303 2 k
Kagaku Kogaku Ronbunshu, 2018Co-Authors: Yusuke Koshiba, Tomoya Tsuji, Taka-aki Hoshina, Masaki Okada, Toshihiko HiakiAbstract:Bubble Point Pressure and dielectric spectra of propane+ethanol liquid mixtures were measured at 303.2 K. The Bubble Point Pressure was measured by use of a static type apparatus. The experimental Pressure increased with increase in the mole fraction of propane, and the tendencies were well correlated with NRTL equations. The dielectric constants decreased with the mole fraction of propane. Otherwise the dielectric relaxation times showed convex shapes for the mole fraction of propane. The excess dielectric constants and the excess inverse dielectric relaxation times showed negative values over the whole range of the propane concentration. These phenomena suggested that hydrophobic interactions and dipole-dipole interactions play important roles in determining the dielectric properties of propane+ethanol liquid mixtures at the experimental temperature and Pressure.
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measurements of Bubble Point Pressure for co2 decane and co2 lubricating oil
Fluid Phase Equilibria, 2004Co-Authors: Tomoya Tsuji, Shuichiro Tanaka, Toshihiko Hiaki, Rei SaitoAbstract:Abstract Two types of experimental apparatus were designed to measure Bubble Point Pressure for supercritical carbon dioxide (CO2) + lubricating oil. One was based on a synthetic method, and the other was on a recirculating method. An oscillation U-tube densimeter was also equipped with the recirculating type apparatus to measure the liquid density. Ensuring the reliability of the experimental data, Bubble Point Pressure was measured for CO2+decane (C10H22) at 344.3 K. The experimental data of the Bubble Point Pressure and the liquid density were agreed well with the literature. Lubricating oil employed was polyalkylene glycol type one for refrigerators, commercially named PAG-1. The Bubble Point Pressure and the liquid density were measured for CO2+PAG-1 at 344.3 K. The experimental data were correlated with Peng–Robinson (PR) equation of state.
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Measurements of Bubble Point Pressure for CO2 + decane and CO2 + lubricating oil
Fluid Phase Equilibria, 2004Co-Authors: Tomoya Tsuji, Shuichiro Tanaka, Toshihiko Hiaki, Saito ReiAbstract:Abstract Two types of experimental apparatus were designed to measure Bubble Point Pressure for supercritical carbon dioxide (CO2) + lubricating oil. One was based on a synthetic method, and the other was on a recirculating method. An oscillation U-tube densimeter was also equipped with the recirculating type apparatus to measure the liquid density. Ensuring the reliability of the experimental data, Bubble Point Pressure was measured for CO2+decane (C10H22) at 344.3 K. The experimental data of the Bubble Point Pressure and the liquid density were agreed well with the literature. Lubricating oil employed was polyalkylene glycol type one for refrigerators, commercially named PAG-1. The Bubble Point Pressure and the liquid density were measured for CO2+PAG-1 at 344.3 K. The experimental data were correlated with Peng–Robinson (PR) equation of state.
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Bubble Point Pressure for binary mixtures of propane and pentafluoroethane
Fluid Phase Equilibria, 2003Co-Authors: Toshiharu Takagi, D Furuta, K. Fujita, Tomoya TsujiAbstract:Abstract Bubble Point Pressure of the binary mixture of propane (C 3 H 8 ) and pentafluoroethane (CHF 2 CF 3 ) were measured by an acoustic absorption technique. The measurements were carried out in a wide temperature range of 243.15–333.15 K with an uncertainty within ±20 kPa except those in the propane rich and high temperature regions, which showed the strong absorption of acoustic wave. For (1− x )C 3 H 8 + x CHF 2 CF 3 , the Bubble Point Pressures increase sharply at first with increasing composition, x and then decrease indicating a convex curve through a small peak around x =0.65 corresponding to the azeotrope in the whole temperatures. The results were correlated by the Peng–Robinson (PR) equation of state including the azeotropic Point.
Toshihiko Hiaki - One of the best experts on this subject based on the ideXlab platform.
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Bubble Point Pressure and some dielectric properties of propane + ethanol liquid mixture at 303.2 K
Kagaku Kogaku Ronbunshu, 2018Co-Authors: Yusuke Koshiba, Tomoya Tsuji, Taka-aki Hoshina, Masaki Okada, Toshihiko HiakiAbstract:Bubble Point Pressure and dielectric spectra of propane+ethanol liquid mixtures were measured at 303.2 K. The Bubble Point Pressure was measured by use of a static type apparatus. The experimental Pressure increased with increase in the mole fraction of propane, and the tendencies were well correlated with NRTL equations. The dielectric constants decreased with the mole fraction of propane. Otherwise the dielectric relaxation times showed convex shapes for the mole fraction of propane. The excess dielectric constants and the excess inverse dielectric relaxation times showed negative values over the whole range of the propane concentration. These phenomena suggested that hydrophobic interactions and dipole-dipole interactions play important roles in determining the dielectric properties of propane+ethanol liquid mixtures at the experimental temperature and Pressure.
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Bubble Point Pressure and some dielectric properties of propane ethanol liquid mixture at 303 2 k
Kagaku Kogaku Ronbunshu, 2018Co-Authors: Yusuke Koshiba, Tomoya Tsuji, Taka-aki Hoshina, Masaki Okada, Toshihiko HiakiAbstract:Bubble Point Pressure and dielectric spectra of propane+ethanol liquid mixtures were measured at 303.2 K. The Bubble Point Pressure was measured by use of a static type apparatus. The experimental Pressure increased with increase in the mole fraction of propane, and the tendencies were well correlated with NRTL equations. The dielectric constants decreased with the mole fraction of propane. Otherwise the dielectric relaxation times showed convex shapes for the mole fraction of propane. The excess dielectric constants and the excess inverse dielectric relaxation times showed negative values over the whole range of the propane concentration. These phenomena suggested that hydrophobic interactions and dipole-dipole interactions play important roles in determining the dielectric properties of propane+ethanol liquid mixtures at the experimental temperature and Pressure.
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measurements of Bubble Point Pressure for co2 decane and co2 lubricating oil
Fluid Phase Equilibria, 2004Co-Authors: Tomoya Tsuji, Shuichiro Tanaka, Toshihiko Hiaki, Rei SaitoAbstract:Abstract Two types of experimental apparatus were designed to measure Bubble Point Pressure for supercritical carbon dioxide (CO2) + lubricating oil. One was based on a synthetic method, and the other was on a recirculating method. An oscillation U-tube densimeter was also equipped with the recirculating type apparatus to measure the liquid density. Ensuring the reliability of the experimental data, Bubble Point Pressure was measured for CO2+decane (C10H22) at 344.3 K. The experimental data of the Bubble Point Pressure and the liquid density were agreed well with the literature. Lubricating oil employed was polyalkylene glycol type one for refrigerators, commercially named PAG-1. The Bubble Point Pressure and the liquid density were measured for CO2+PAG-1 at 344.3 K. The experimental data were correlated with Peng–Robinson (PR) equation of state.
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Measurements of Bubble Point Pressure for CO2 + decane and CO2 + lubricating oil
Fluid Phase Equilibria, 2004Co-Authors: Tomoya Tsuji, Shuichiro Tanaka, Toshihiko Hiaki, Saito ReiAbstract:Abstract Two types of experimental apparatus were designed to measure Bubble Point Pressure for supercritical carbon dioxide (CO2) + lubricating oil. One was based on a synthetic method, and the other was on a recirculating method. An oscillation U-tube densimeter was also equipped with the recirculating type apparatus to measure the liquid density. Ensuring the reliability of the experimental data, Bubble Point Pressure was measured for CO2+decane (C10H22) at 344.3 K. The experimental data of the Bubble Point Pressure and the liquid density were agreed well with the literature. Lubricating oil employed was polyalkylene glycol type one for refrigerators, commercially named PAG-1. The Bubble Point Pressure and the liquid density were measured for CO2+PAG-1 at 344.3 K. The experimental data were correlated with Peng–Robinson (PR) equation of state.
Hiroshi Inomata - One of the best experts on this subject based on the ideXlab platform.
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development of a rolling ball viscometer for simultaneous measurement of viscosity density Bubble Point Pressure of co2 expanded liquids
Fluid Phase Equilibria, 2019Co-Authors: Yoshiyuki Sato, Hiroki Aba, Chisato Yoneyama, Hiroshi InomataAbstract:Abstract In this work, a rolling ball viscometer was developed that makes it possible to measure viscosity, density, and phase equilibria simultaneously. The cell is mounted inside a high-Pressure vessel and can be used at Pressures up to 30 MPa and temperatures up to 200 °C. Calibration of the viscometer was carried out by using water at inclined angles from 10° to 30° at temperatures of 40 °C and 80 °C and at Pressures up to 20 MPa with toluene viscosity being used for confirmation; viscosity measurements of toluene were found to agree with literature data to within 0.66% in average relative deviation. Viscosity, density, and Bubble-Point Pressure of ethanol + CO2 systems were measured at 40 °C; Bubble-Point Pressures for the ethanol + CO2 system agreed to within 2.2% of the literature. Viscosity of the ethanol + CO2 system were measured at saturated and pressurized liquid states and viscosity values decreased with increasing CO2 composition, and decreased to about half the value of pure ethanol for 0.32 mol fraction of CO2.
Haiyang Zhang - One of the best experts on this subject based on the ideXlab platform.
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Measurements of Bubble Point Pressure and saturated liquid density for ((R1234yf + R290))
The Journal of Chemical Thermodynamics, 2018Co-Authors: Quan Zhong, Huiya Li, Jun Shen, Xueqiang Dong, Yanxing Zhao, Haiyang Zhang, Maoqiong GongAbstract:Abstract In this paper, Bubble Point Pressures and saturated liquid densities of {2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) + propane (R290)} binary mixtures were measured using a compact single-sinker densimeter. Measurements were carried out over temperatures from (255.048 to 300.135) K and mole fractions of R1234yf at (0.113, 0.217, 0.322, 0.422, 0.533, 0.625). The experimental standard uncertainties were estimated to be less than 5 mK for the temperature, 2 kPa for the Pressure, 0.003 for the mole fraction and 0.02% for the density. The experimental Bubble Point Pressures were correlated by the Peng-Robinson equation of state, while the experimental saturated liquid densities were represented with the VDNS and our modified Rackett equations. In addition, saturated liquid densities of azeotropy Point at temperatures T = (253.150, 263.150, 273.150, 283.150 and 293.150) K were determined based on our previous and present work.
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measurements of Bubble Point Pressure and saturated liquid density for r1234yf r290
The Journal of Chemical Thermodynamics, 2018Co-Authors: Qua Zhong, Ju She, Xueqiang Dong, Yanxing Zhao, Hao Guo, Haiyang Zhang, Maoqiong GongAbstract:Abstract In this paper, Bubble Point Pressures and saturated liquid densities of {2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) + propane (R290)} binary mixtures were measured using a compact single-sinker densimeter. Measurements were carried out over temperatures from (255.048 to 300.135) K and mole fractions of R1234yf at (0.113, 0.217, 0.322, 0.422, 0.533, 0.625). The experimental standard uncertainties were estimated to be less than 5 mK for the temperature, 2 kPa for the Pressure, 0.003 for the mole fraction and 0.02% for the density. The experimental Bubble Point Pressures were correlated by the Peng-Robinson equation of state, while the experimental saturated liquid densities were represented with the VDNS and our modified Rackett equations. In addition, saturated liquid densities of azeotropy Point at temperatures T = (253.150, 263.150, 273.150, 283.150 and 293.150) K were determined based on our previous and present work.
