Gas-phase PVT properties and vapor pressures of pentafluoroethane (HFC-125) determined according to the Burnett method
- Keio Univ., Yokohama (Japan). Dept. of Mechanical Engineering
The gaseous compressibility factors of pentafluoroethane (HFC-125) have been measured by a Burnett apparatus in the range of temperature from 290 to 390 K and pressures up to 3.6 MPa. The vapor pressures in the range of temperatures form 290 K to the critical temperature have also been measured, and a vapor-pressure correlation has been developed. The critical pressure was determined to be 3.6199 [+-] 0.0018 MPa on the basis of the present measurements. The second virial coefficient shave been determined along 11 isotherms, and a truncated virial equation of state has also been developed to represent the temperature dependence of the second virial coefficients and the present. Burnett measurements. The experimental uncertainties of temperature, pressure, and density measurements throughout the present study were estimated to be better than [+-]10 mK, [+-]0.8 kPa, and [+-]0.12%, respectively. The purity of the HFC-125 sample used was better than 99.998 mass %.
- OSTI ID:
- 6552312
- Journal Information:
- Journal of Chemical and Engineering Data; (United States), Vol. 40:1; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
FLUORINATED ALIPHATIC HYDROCARBONS
THERMODYNAMIC PROPERTIES
REFRIGERANTS
CHLOROFLUOROCARBONS
DENSIMETERS
EQUATIONS OF STATE
EXPERIMENTAL DATA
MATERIAL SUBSTITUTION
PRESSURE MEASUREMENT
TEMPERATURE MEASUREMENT
DATA
EQUATIONS
FLUIDS
HALOGENATED ALIPHATIC HYDROCARBONS
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MEASURING INSTRUMENTS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
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PHYSICAL PROPERTIES
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320106* - Energy Conservation
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540120 - Environment
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