ISSN:
1572-9567
Keywords:
activity coefficients
;
binary interaction parameters
;
equation of state
;
fugacity coefficients
;
HFC-32/134a mixture
;
HFC-125/134a mixture
;
thermodynamic consistency
;
vapor–liquid equilibrium
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A vapor-liquid equilibrium apparatus has been developed and used to obtain data for the binary HFC-32/134a and HFC-125/134a systems. Twenty-two equilibrium data are obtained for the HFC-32/134a system over the temperature range from 258.15 to 283.15 K at 5 K intervals and the composition range from 0.2 to 0.8 liquid mole fraction. Twenty-five equilibrium data are obtained for the HFC-125/134a system over the temperature range from 263.15 to 303.15 K at 10 K intervals and the composition range from 0.18 to 0.81 liquid mole friction. These data have been tested and found to be thermodynamically consistent. Based upon the present data, the binary interaction parameters of the Carnahan-Starling-De Santis (CSD) and Redlich–Kwong–Soave (RKS) equations of state are calculated for five isotherms for the HFC-125/134a mixture and six isotherms for the HFC-32/134a mixture. The calculated results from the CSD equation are compared with data in the open literature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022605104490
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