Vapor pressures of new fluorocarbons
- Kobe Univ. (Japan)
The vapor pressures of four fluorocarbons have been measured at the following temperature ranges: R123 (2,2-dichloro-1,1,1-trifluoroethane), 273-457 K; R123a (1,2-dichloro-1,1,2-trifluoroethane), 303-458 K; R134a (1,1,1,2-tetrafluoroethane), 253-373 K; and R132b (1,2-dichloro-1,1-difluoroethane), 273-398 K. Determinations of the vapor pressure were carried out by a constant-volume apparatus with an uncertainty of less than 1.0%. The vapor pressures of R123 and R123a are very similar to those of R11 over the whole experimental temperature range, but the vapor pressures of R134a and R132b differ somewhat from those of R12 and R113, respectively, as the temperature increases. The numerical vapor pressure data can be fitted by an empirical equation using the Chebyshev polynomial with a mean deviation of less than 0.3%.
- OSTI ID:
- 5523932
- Report Number(s):
- CONF-880606-; CODEN: IJTHD
- Journal Information:
- International Journal of Thermophysics; (USA), Vol. 10:3; Conference: 10. symposium on thermophysical properties, Gaithersburg, MD (USA), 20-23 Jun 1988; ISSN 0195-928X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermodynamic properties of {Delta}H{sub f 298}{degree}, S{sub 298}{degree}, and C{sub p}(T) for 2-fluoro-2-methylpropane, {Delta}H{sub f 298}{degree} of fluorinated ethanes, and group additivity for fluoroalkanes
PVT property measurements for liquid 1,2-dichloro-1,2,2-trifluoroethane from 278 to 338 K
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
CHLORINATED ALIPHATIC HYDROCARBONS
VAPOR PRESSURE
FLUORINATED ALIPHATIC HYDROCARBONS
REFRIGERANTS
MATERIALS TESTING
AIR POLLUTION ABATEMENT
BOILING POINTS
COMPARATIVE EVALUATIONS
CRITICAL PRESSURE
CRITICAL TEMPERATURE
ENVIRONMENTAL EFFECTS
FREONS
MATERIAL SUBSTITUTION
OZONE LAYER
POLYNOMIALS
PRESSURE MEASUREMENT
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
FLUIDS
FUNCTIONS
HALOGENATED ALIPHATIC HYDROCARBONS
LAYERS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
POLLUTION ABATEMENT
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WORKING FLUIDS
400201* - Chemical & Physicochemical Properties
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)