Thermophysical properties of gaseous refrigerants from speed-of-sound measurements. II. Results for 1,1-dichloro-1-fluoroethane (CCl sub 2 FCH sub 3 )

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.461694· OSTI ID:5170780

Goodwin, A R.H.; Moldover, M R ^[1]

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1. Thermophysics Division, National Institute of Standards and Technology, Gaithersburg, Maryland (USA)

The speed of sound in gaseous 1,1-dichloro-1-fluoroethane (CCl{sub 2}FCH{sub 3}, commonly known as R141b) has been measured between 260 and 315 K. Perfect-gas heat capacities and second acoustic virial coefficients have been calculated from the results. The second acoustic virial coefficients are used to estimate the density virial coefficients {ital B}({ital T}) and an effective square-well potential. Our estimates of {ital B}({ital T}) are consistent with {ital B}({ital T}) deduced from high-quality {ital p}({ital V}{sub {ital m}}, {ital T}) results. We provided estimates of the vibrational relaxation time for R141b.

• OSTI ID: 5170780
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 95:7; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CHLORINATED ALIPHATIC HYDROCARBONS
EQUATIONS
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
LOW PRESSURE
LOW TEMPERATURE
MEDIUM TEMPERATURE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRIGERANTS
RELAXATION TIME
SOUND WAVES
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
VELOCITY
VIRIAL EQUATION
WORKING FLUIDS