A5090037464- Phase Equilibria and Thermodynamics
- Refrigeration and Air Conditioning Technologies
- Chemical Thermodynamics and Molecular Structure
- Spacecraft and Cryogenic Technologies
- Heat Transfer and Boiling Studies
- Heat Transfer and Optimization
- Advanced Thermodynamic Systems and Engines
- Thermodynamic properties of mixtures
- Hybrid Renewable Energy Systems
- Scientific Measurement and Uncertainty Evaluation
- Combustion and Detonation Processes
- Subcritical and Supercritical Water Processes
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Combustion Engine Technologies
- Heat transfer and supercritical fluids
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Calibration and Measurement Techniques
- Nuclear reactor physics and engineering
- Rocket and propulsion systems research
- Gas Dynamics and Kinetic Theory
- Engineering Applied Research
- Hydrogen Storage and Materials
- Advanced Chemical Physics Studies
- Advanced Battery Technologies Research
- Advanced Algorithms and Applications
Kyushu University
2015-2024
Nagasaki University
2016
National Institute of Advanced Industrial Science and Technology
2010
Keio University
2004-2005
Saturation pressures for new low global warming potential refrigerants trifluoroethene (R1123, CF2═CHF) and 3,3,3-trifluoropropene (R1243zf, CF3CH═CH2) were measured by the isochoric method temperatures between 278 377 K. Temperature was with a 25 Ω standard platinum resistance thermometer on ITS-90. Pressure digital quartz pressure transducer. The experimental uncertainties in temperature are estimated to be 5 mK 1 kPa (k = 2), respectively. New saturation-pressure correlations have been...
Measurements of PvT properties, saturated densities, and critical parameters were carried out for a low-GWP refrigerant: 3,3,3-trifluoropropene (HFO1243zf, CF3CH═CH2). Seventy-five property data points along seven isochores around the point obtained in temperature range from 328 to 430 K, density between 50 899 kg m–3, at pressures up 6.9 MPa by isochoric method. Fourteen densities observation meniscus disappearance region. On basis these measurements, Tc = 376.93 ± 0.01 K ρc 414 3 m–3...
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 property data in the single phase region along seven isochores R1336mzz(E) obtained temperatures between 333 410 K, pressures up to 5681 kPa, densities 52 1216 kg·m–3 by isochoric method. Twenty-six pressure 287 K temperature at pressure. Twenty-one density observation meniscus disappearance near point...
The viscosity of hydrogen mixtures in the supercritical region water is significant for optimization gasification process organic substances water. In this work, a capillary apparatus was developed measuring fluids and their at 279–980 K up to 34 MPa. viscosities pure water, nitrogen, 0.5–31.0 MPa were measured, results compared with reference equations. Then, H2–CO2 H2–CO2–CH4 280–677 0.7–33.1 H2–H2O H2–CO2–CH4–CO–H2O system 720–924 19.9–31.1 measured. expanded relative uncertainty (k = 2)...
PvT properties, vapor pressures, and saturated densities for a new low-GWP refrigerant; R1224yd(Z) (cis-1-chloro-2,3,3,3-tetrafluoropropene; CF3CF═CHCl), were measured. Forty-six property data obtained along four lower density isochores in the superheated region; 22, 48, 55, 103 kg·m–3, three higher compressed liquid 970, 1107, 1197 kg·m–3 at pressures up to 6.4 MPa. Fifteen pressure temperature range from 310 410 K 2393 kPa, correlation was formulated based on these measurements. Saturated...
The PVT properties of the (H2 + CO2) mixtures and CO2 CH4) in supercritical region water are significant for making full use gas coal gasification. We report measurements (0.6005 H2 0.3995 CO2), (0.6992 0.3008 (0.6026 0.1948 0.2026 (all mole fractions) at temperature 673 K pressures (0.5 to 25) MPa, measured by a modified Burnett method. upper bounds expanded uncertainties 95% confidence 0.2 temperature, 0.015·p pressure, 0.008·ρ density. density data were compared with those predicted using...
Vapor pressures for new low-GWP refrigerants of R1233zd(E) (trans-1-chloro-3,3,3-trifluoropropene) and R1336mzz(Z) (cis-1,1,1,4,4,4-hexafluoro-2-butene) were measured by the isochoric method. Twelve vapor-pressure measurements obtained at temperatures between 300 410 K, whereas 17 290 K. Temperature was with a 25 Ω standard platinum resistance thermometer an aid ITS-90, pressure digital quartz transducer. The experimental uncertainties in temperature are estimated to be within 5 mK 1 kPa,...
Measurements of PvT properties, saturated pressures, densities, and critical parameters were carried out for R-13I1 (trifluoroiodomethane; CF3I). Forty-seven property data in the one-phase region along seven isochores obtained temperatures between 310 405 K, pressures up to 6392 kPa, densities 48 1784 kg·m–3 using isochoric method. Thirty-seven saturation pressure 240 K temperature 58 kPa pressure. Twenty-six density by observation meniscus disappearance inflection points isochore kg·m–3. On...
The density of the H2–CO2–CH4–CO–H2O system in supercritical region water is significant for analyzing gasification process organic substances water. We report measurements quinary by isochoric method at 722–930 K and 15.4–30.3 MPa. upper limit expanded uncertainty 95% confidence temperature 0.2 K. limits relative uncertainties pressure are 0.0006 0.0125, respectively. data were compared with those predicted using GERG-2008 equation state. absolute deviations between calculated experimental...