ABSTRACT

We present experimental speed of sound data for the saturated fluorocarbons used most frequently in particle detector cooling systems. Data were collected over the moderate range of pressure (.0.4 MPa) and temperature 250.340 K. A commercial sound/density analyzer operating on the vibrating tube principle was employed for the measurements in liquid state. A dedicated sonar analyser . described in detail . was recently redesigned and developed for the speed of sound measurements in gas phase. Data for speed of sound in saturated fluorocarbons presented in previous papers [V. Vacek, G. Hallewell, S. Ilie, S. Lindsay, Fluid Phase Equilib. 174 (2000) 191.201; V. Vacek, G. Hallewell, S. Lindsay, Fluid Phase Equilib. 185 (2001) 305.314] were reanalyzed and corrected and some new measured data were added. Our experimental data were then used to validate a theoretically based equation of state application rather than the empirical or semi-empirical equations of state mostly used up to now in fluorocarbon applications.

Compounds

#	Formula	Name
1	C6F14	perfluorohexane
2	C7F16	hexadecafluoroheptane
3	C8F18	octadecafluorooctane
4	C4F10	decafluorobutane
5	C3F8	octafluoropropane

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	sound analyzer	3
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	4
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	sound analyzer	7
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	sound analyzer	7
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	4	Speed of sound, m/s ; Gas	Temperature, K; Gas Pressure, kPa; Gas		Gas	sonar gas analyzer	38
POMD	5	Speed of sound, m/s ; Gas	Temperature, K; Gas Pressure, kPa; Gas		Gas	sonar gas analyzer	59
POMD	5 4	Speed of sound, m/s ; Gas	Temperature, K; Gas Pressure, kPa; Gas	Mass fraction - 5; Gas	Gas	sonar gas analyzer	57
POMD	5 4	Speed of sound, m/s ; Gas	Temperature, K; Gas Pressure, kPa; Gas	Mass fraction - 5; Gas	Gas	sonar gas analyzer	34

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Properties of saturated fluorocarbons: Experimental data and modeling using perturbed-chain-SAFT

Hallewell, G.[Greg], Vacek, V.[Vaclav], Vins, V.[Vaclav]

ABSTRACT