International Journal of Thermophysics

, Volume 33, Issue 2, pp 220–234 | Cite as

An Equation of State for Fluoroethane (R161)

Article

Abstract

Fluoroethane (R161, C2H5F, 353-36-6) is a potential alternative refrigerant with excellent cycle performance, with zero ozone-depletion potential and low global warming potential. In this study, the thermodynamic property formulation for fluoroethane has been developed with the use of available experimental thermodynamic property data. In determining the equation of state, multiproperty fitting methods were used including single-phase pressure–density–temperature (pρT), vapor pressure, and saturated liquid-density data. The equation of state has been developed to conform to the Maxwell criterion for two-phase liquid–vapor equilibrium states, and is valid for temperatures from 130 K to 450 K, and pressures to 5 MPa. The extrapolation behavior of the equation of state at high temperatures and high pressures is reasonable. As there are very few compressed liquid-density experimental data published, the uncertainties in density of the equation of state are estimated to be 2.0 % in the compressed-liquid region and 0.5 % in the gas and supercritical regions. Uncertainties in vapor pressure are 0.5 % above 200 K and increase at lower temperatures. The uncertainties for all properties are higher in the critical region, except vapor pressure. Detailed comparisons between experimental and calculated data have been performed in this study.

Keywords

Alternative refrigerant Equation of state Fluoroethane Thermodynamic properties 

List of Symbols

a

Specific Helmholtz energy

ai, ci, vi, ni

Coefficients

B

Second virial coefficient

C

Third virial coefficient

cp

Specific isobaric heat capacity

cv

Specific isochoric heat capacity

\({d_{i}, l_{i}, t_{i}, \eta_{i}, \beta_{i}, \gamma_{i},\varepsilon_{i}, u_{i}}\)

Exponents

h

Specific enthalpy

i

Index number

M

Molar mass

N

Number of data points

p

Pressure

R

Molar gas constant

s

Specific entropy

T

Temperature

w

Sound speed

Greeks

Δ

Deviation

α

Dimensionless Helmholtz energy

δ

Reduced density

ρ

Density

τ

Inverse reduced temperature

ω

Acentric factor

Superscripts

0

Ideal gas

r

Residual

Saturated-liquid state

Subscripts

0

Reference state

c

Critical

calc

Calculated

esd

Estimated

exp

Experimental

l

Liquid

nbp

Normal boiling point

v

Vapor

σ

Saturation

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Cui X.I., Chen G.M., Han X.H., Wang Q.: Fluid Phase Equilib. 245, 155 (2006)CrossRefGoogle Scholar
  2. 2.
    Beyerlein A.L., DesMarteau D.D., Kul I., Zhao G.: Fluid Phase Equilib. 150, 287 (1998)CrossRefGoogle Scholar
  3. 3.
    Booth H.S., Swinehart C.F.: J. Am. Chem. Soc. 57, 1337 (1935)CrossRefGoogle Scholar
  4. 4.
    Span R.: Multiparameter Equations of State - An Accurate Source of Thermodynamic Property Data. Springer, Berlin (2000)Google Scholar
  5. 5.
    M. Frenkel, V. Diky, C.D. Muzny, A.F. Kazakov, J.W. Magee, I.M. Abdulagatov, J.W. Kang, NIST ThermoData Engine, NIST Standard Reference Database 103b, Version 5.0 (Standard Reference Data Program, National Institute of Standards and Technology, Gaithersburg, MD, 2010)Google Scholar
  6. 6.
    B.E. Poling, J.M. Prausnitz, J.P. O’Connell, The Properties of Gases and Liquids, 5th edn. (McGraw-Hill, New York, 2000)Google Scholar
  7. 7.
    E.W. Lemmon, M.L. Huber, M.O. McLinden, NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version8.0 (Standard Reference Data Program, National Institute of Standards and Technology, Gaithersburg, MD, 2007)Google Scholar
  8. 8.
    Lemmon E.W., Jacobsen R.T.: J. Phys. Chem. Ref. Data 34, 68 (2005)CrossRefGoogle Scholar
  9. 9.
    Wagner W., Prüss A.: J. Phys. Chem. Ref. Data 31, 387 (2002)ADSCrossRefGoogle Scholar
  10. 10.
    Grosse A.V., Wackher R.C., Linn C.B.: J. Chem. Phys. 44, 275 (1940)CrossRefGoogle Scholar
  11. 11.
    Kul I., DesMarteau D.D., Beyerlein A.L.: Fluid Phase Equilib. 173, 263 (2000)CrossRefGoogle Scholar
  12. 12.
    Peng D.Y., Robinson D.B.: Ind. Eng. Chem. Fundam. 15, 59 (1976)MATHCrossRefGoogle Scholar
  13. 13.
    Chueh C.F., Swanson A.C.: Chem. Eng. Prog. 69, 83 (1973)Google Scholar
  14. 14.
    Lee B.I., Kesler M.G.: AIChE J. 21, 510 (1975)CrossRefGoogle Scholar
  15. 15.
    Lemmon E.W., McLinden M.O., Wagner W.: J. Chem. Eng. Data 54, 3141 (2009)CrossRefGoogle Scholar
  16. 16.
    Wu J.T., Zhou Y., Lemmon E.W.: J. Phys. Chem. Ref. Data 40, 023104 (2011)ADSCrossRefGoogle Scholar
  17. 17.
    Span R., Wagner W.: Int. J. Thermophys. 18, 1415 (1997)ADSCrossRefGoogle Scholar
  18. 18.
    Smyth C.P., McAlpine K.B.: J. Chem. Phys. 2, 499 (1934)ADSCrossRefGoogle Scholar
  19. 19.
    Parthasarathy S.: Proc. Indian Natl. Sci. Acad. Sect. A 2, 497 (1935)Google Scholar
  20. 20.
    Grosse A.V.: J. Am. Chem. Soc. 59, 2739 (1937)CrossRefGoogle Scholar
  21. 21.
    Vidaurri F.C.: J. Chem. Eng. Data 20, 349 (1975)CrossRefGoogle Scholar
  22. 22.
    Chen Q., Hong R.H., Chen G.M.: J. Chem. Eng. Data 50, 1586 (2005)CrossRefGoogle Scholar
  23. 23.
    Han X.H., Chen G.M., Li C.S., Qiao X.G., Cui X.L., Wang Q.: J. Chem. Eng. Data 51, 1232 (2006)CrossRefGoogle Scholar
  24. 24.
    Dong X., Gong M., Zhang Y., Wu J.: J. Chem. Eng. Data 53, 2193 (2008)CrossRefGoogle Scholar
  25. 25.
    Chen Q., Hong R.H., Chen G.M.: Fluid Phase Equilib. 237, 111 (2005)CrossRefGoogle Scholar
  26. 26.
    Q. Chen, Ph.D. Dissertation, Zhejiang University, 2006Google Scholar
  27. 27.
    Bignell C.M., Dunlop P.J.: J. Chem. Phys. 98, 4889 (1993)ADSCrossRefGoogle Scholar
  28. 28.
    Stull D.R., Mayfield F.D.: Ind. Eng. Chem. 35, 639 (1943)CrossRefGoogle Scholar
  29. 29.
    Smith D.C., Saunders R.A., Nielsen J.R., Ferguson E.E.: J. Chem. Phys. 20, 847 (1952)ADSCrossRefGoogle Scholar
  30. 30.
    Minkin D.M., Vvedenskii A.A.: Zh. Fiz. Khim. 41, 1571 (1967)Google Scholar
  31. 31.
    Chen S.S., Rodgers A.S., Chao J., Wilhoit R.C., Zwolinski B.J.: J. Phys. Chem. Ref. Data 4, 441 (1975)ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education (MOE)Xi’an Jiaotong UniversityXi’anChina

Personalised recommendations