Abstract
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.
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Paper dedicated to Professor Joseph Kestin.
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Klomfar, J., Hrubý, J. & Šifner, O. Measurements of the p-v-T behavior of refrigerant R134a in the liquid phase. Int J Thermophys 14, 727–738 (1993). https://doi.org/10.1007/BF00502104
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DOI: https://doi.org/10.1007/BF00502104