NDLI: New Fundamental Equations of State with a Common Functional Form for 2,3,3,3-Tetrafluoropropene (R-1234yf) and trans-1,3,3,3-Tetrafluoropropene (R-1234ze(E))

Content Provider	Springer Nature Link
Author	Akasaka, Ryo
Copyright Year	2011
Abstract	New fundamental equations of state explicit in the Helmholtz energy with a common functional form are presented for 2,3,3,3-tetrafluoropropene (R-1234yf) and trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)). The independent variables of the equations of state are the temperature and density. The equations of state are based on reliable experimental data for the vapor pressure, density, heat capacities, and speed of sound. The equation for R-1234yf covers temperatures between 240 K and 400 K for pressures up to 40 MPa with uncertainties of 0.1 % in liquid density, 0.3 % in vapor density, 2 % in liquid heat capacities, 0.05 % in the vapor-phase speed of sound, and 0.1 % in vapor pressure. The equation for R-1234ze(E) is valid for temperatures from 240 K to 420 K and for pressures up to 15 MPa with uncertainties of 0.1 % in liquid density, 0.2 % in vapor density, 3 % in liquid heat capacities, 0.05 % in the vapor-phase speed of sound, and 0.1 % in vapor pressure. Both equations exhibit reasonable behavior in extrapolated regions outside the range of the experimental data.
Starting Page	1125
Ending Page	1147
Page Count	23
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	32
Issue Number	6
e-ISSN	15729567
Language	English
Publisher	Springer US
Publisher Date	2011-05-04
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	R-1234yf R-1234ze(E) Equation of state Helmholtz energy Refrigerants Physical Chemistry Industrial Chemistry/Chemical Engineering Condensed Matter Physics Mechanics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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