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New Fundamental Equations of State for cis-1,3,3,3-Tetrafluoropropene [R-1234ze(Z)] and 3,3,3-Trifluoropropene (R-1243zf)

Published

Author(s)

Ryo Akasaka, Eric Lemmon

Abstract

New fundamental equations of state are presented for cis-1,3,3,3-tetrafluoropropene [R- 1234ze(Z)] and 3,3,3-trifluoropropene (R-1243zf). The new equation for R-1234ze(Z), which is mainly discussed in this paper, is applicable to ranges at lower temperatures or higher pressures compared to the first published equation, and uncertainties in liquid-phase sound speeds are greatly improved. The equation is valid at temperatures between 238 K and 440 K at pressures up to 34 MPa. Estimated uncertainties in this range are 0.1 % for vapor pressures at temperatures above 300 K and 0.3 % at lower temperatures, 0.1 % for liquid-phase densities, 0.3 % for vapor-phase densities, 0.02 % for vapor-phase sound speeds, and 0.05 % for liquidphase sound speeds, except in the critical region where larger deviations up to about 1 % are observed in density. The equation shows reasonable extrapolation behavior at extremely low and high temperatures, and at high pressures.
Citation
Journal of Chemical and Engineering Data

Citation

Akasaka, R. and Lemmon, E. (2019), New Fundamental Equations of State for cis-1,3,3,3-Tetrafluoropropene [R-1234ze(Z)] and 3,3,3-Trifluoropropene (R-1243zf), Journal of Chemical and Engineering Data, [online], https://doi.org/10.1021/acs.jced.9b00007 (Accessed February 22, 2024)
Created April 17, 2019, Updated October 12, 2021