International Journal of Thermophysics

, Volume 14, Issue 4, pp 727–738 | Cite as

Measurements of the p-v-T behavior of refrigerant R134a in the liquid phase

  • J. Klomfar
  • J. Hrubý
  • O. Šifner


A short description of an improved p-v-T apparatus with a constant-volume piezometer is given. p-v-T data of the environmentally safe refrigerant 1, 1, 1, 2-tetrafluoroethane (R134a), were measured for temperatures between 205 and 309 K at pressures up to 56 MPa. The uncertainty of temperature and pressure measurements was estimated to be ±0.05°C and ±0.1%, respectively; uncertainty in the specific volume was estimated to be ±0.15%. Purity of the sample used was 99.9+wt%. The data are represented analytically in order to demonstrate experimental accuracy and to facilitate calculation of thermodynamic properties.

Key Words

equation of state p-v-T measurements R134a refrigerants 1, 1, 1, 2-tetrafluoroethane 


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Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • J. Klomfar
    • 1
  • J. Hrubý
    • 1
  • O. Šifner
    • 1
  1. 1.Institute of ThermomechanicsAcademy of Sciences of the Czech RepublicPrague 8Czech Republic

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