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PUBLICATIONS

Thermodynamic Properties of trans-1,3,3,3-tetrafluoropropene [R1234ze(E)]: Measurements of Density and Vapor Pressure and a Comprehensive Equation of State

Published

Author(s)

Mark O. McLinden, Monika Thol, Eric W. Lemmon

Abstract

The thermodynamic properties of a hydrofluoro-olefin (HFO) refrigerant are presented. The p-ρ-T behavior of high-purity (99.993 %) R1234ze(E) was measured from 240 K to 420 K with pressures to 15 MPa using a two-sinker densimeter. The measurements extend from low-density vapor to compressed-liquid states. Vapor pressures were measured in the densimeter from 261 K to 380 K. The equation of state (EOS) for R1234ze(E) is expressed in terms of the Helmholtz energy as a function of temperature and density, and it is valid over the entire fluid surface. The formulation can be used for the calculation of all thermodynamic properties. Comparisons to experimental data are given to establish the accuracy of the EOS.
Proceedings Title
International Refrigeration and Air Conditioning Conference, Purdue
Volume
2189
Conference Dates
July 12-15, 2010
Conference Location
Purdue, IN
Pub Type
Conferences

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Keywords

equation of state, experimental measurements, hydrofluro-olefin, pressure-density-temperature properties, R1234ze(E), refrigerant, thermodynamic properties, vapor pressure
Environment and Thermodynamics

Citation

McLinden, M. , Thol, M. and Lemmon, E. (2010), Thermodynamic Properties of trans-1,3,3,3-tetrafluoropropene [R1234ze(E)]: Measurements of Density and Vapor Pressure and a Comprehensive Equation of State, International Refrigeration and Air Conditioning Conference, Purdue, Purdue, IN, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905549 (Accessed October 8, 2025)

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Created July 15, 2010, Updated June 2, 2021
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