TY - JOUR
T1 - A fundamental equation of state for cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z))
AU - Akasaka, Ryo
AU - Higashi, Yukihiro
AU - Miyara, Akio
AU - Koyama, Shigeru
N1 - Funding Information:
This work was supported by a grant from the New Energy and Industrial Technology Development Organization (NEDO) . The authors gratefully acknowledge Dr. Eric Lemmon of the National Institute of Standards and Technology in Boulder, who gave much valuable advice for the development of a reliable equation of state. The authors are also grateful to Dr. Gabriele Raabe, Technische Universität Braunschweig, for sharing her GEMC simulation results.
PY - 2014/8
Y1 - 2014/8
N2 - A fundamental equation of state is presented for cis-1,3,3,3- tetrafluoropropene (R-1234ze(Z)). The equation of state is expressed explicitly in the Helmholtz energy with independent variables of temperature and density. The equation of state is based on experimental data for the critical parameters, vapor pressures, densities of the liquid and vapor phases, and sound speeds in the vapor phase. All thermodynamic properties can be derived as derivatives of the Helmholtz energy. The equation is valid for temperatures from 273 K to 430 K and for pressures up to 6 MPa. The estimated uncertainties of properties calculated from the equation are 0.15% in vapor pressures, 0.4% in vapor densities, 0.2% in liquid densities, and 0.05% in the vapor phase sound speeds. The equation exhibits reasonable extrapolation behavior in regions away from the experimental data.
AB - A fundamental equation of state is presented for cis-1,3,3,3- tetrafluoropropene (R-1234ze(Z)). The equation of state is expressed explicitly in the Helmholtz energy with independent variables of temperature and density. The equation of state is based on experimental data for the critical parameters, vapor pressures, densities of the liquid and vapor phases, and sound speeds in the vapor phase. All thermodynamic properties can be derived as derivatives of the Helmholtz energy. The equation is valid for temperatures from 273 K to 430 K and for pressures up to 6 MPa. The estimated uncertainties of properties calculated from the equation are 0.15% in vapor pressures, 0.4% in vapor densities, 0.2% in liquid densities, and 0.05% in the vapor phase sound speeds. The equation exhibits reasonable extrapolation behavior in regions away from the experimental data.
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U2 - 10.1016/j.ijrefrig.2013.12.018
DO - 10.1016/j.ijrefrig.2013.12.018
M3 - Article
AN - SCOPUS:84904540239
SN - 0140-7007
VL - 44
SP - 168
EP - 176
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
ER -