Equation of State ofHe4in the Critical Region

1965 ◽  
Vol 15 (1) ◽  
pp. 4-6 ◽  
Author(s):  
Laszlo Tisza ◽  
C. E. Chase
Keyword(s):  
Equation Of State ◽  
Critical Region

A Rational Equation of State for Water and Water Vapor in the Critical Region

1964 ◽  
Vol 86 (3) ◽  
pp. 320-326 ◽  
Author(s):  
E. S. Nowak
Keyword(s):  
Water Vapor ◽  
Equation Of State ◽  
Thermodynamic Properties ◽  
Specific Heat ◽  
Critical Point ◽  
Critical Region ◽  
Constant Pressure ◽  
Parametric Equation ◽  
Enthalpy And Entropy ◽  
Specific Volumes

A parametric equation of state was derived for water and water vapor in the critical region from experimental P-V-T data. It is valid in that part of the critical region encompassed by pressures from 3000 to 4000 psia, specific volumes from 0.0400 to 0.1100 ft3/lb, and temperatures from 698 to 752 deg F. The equation of state satisfies all of the known conditions at the critical point. It also satisfies the conditions along certain of the boundaries which probably separate “supercritical liquid” from “supercritical vapor.” The equation of state, though quite simple in form, is probably superior to any equation heretofore derived for water and water vapor in the critical region. Specifically, the deviations between the measured and computed values of pressure in the large majority of the cases were within three parts in one thousand. This coincides approximately with the overall uncertainty in P-V-T measurements. In view of these factors, the author recommends that the equation be used to derive values for such thermodynamic properties as specific heat at constant pressure, enthalpy, and entropy in the critical region.

Experimental and theoretical study of the equation of state of trifluoromethane in the near-critical region

1991 ◽  
Vol 95 (8) ◽  
pp. 3351-3357 ◽  
Author(s):  
Arturo G. Aizpiri ◽  
Antonio Rey ◽  
Jorge Davila ◽  
Ramon G. Rubio ◽  
John A. Zollweg ◽  
...  
Keyword(s):  
Equation Of State ◽  
Critical Region ◽  
Theoretical Study

Scaled Parametric Equation of State for Oxygen in the Critical Region

1995 ◽  
pp. 358-364
Author(s):  
J. M. H. Levelt Sengers ◽  
W. L. Greer ◽  
J. V. Sengers
Keyword(s):  
Equation Of State ◽  
Critical Region ◽  
Parametric Equation

Thermal equation of state for real gas in a wide range of state parameters, including the critical region

2008 ◽  
Vol 15 (3) ◽  
pp. 359-368 ◽  
Author(s):  
A. B. Kaplun ◽  
B. I. Kidyarov ◽  
A. B. Meshalkin ◽  
A. V. Shishkin
Keyword(s):  
Equation Of State ◽  
Critical Region ◽  
Thermal Equation ◽  
Real Gas ◽  
Thermal Equation Of State ◽  
Wide Range

scholarly journals New Equation of State for Water and Steam in the Critical Region

1968 ◽  
Vol 34 (259) ◽  
pp. 501-516 ◽  
Author(s):  
Koichi WATANABE ◽  
Ichimatsu TANISHITA ◽  
Hiroyasu OZAWA
Keyword(s):  
Equation Of State ◽  
Critical Region ◽  
New Equation

A Simple Equation of State Valid in the Critical Region for Pure Compounds

1998 ◽  
Vol 37 (8) ◽  
pp. 3006-3011 ◽  
Author(s):  
Gustavo A. Iglesias-Silva ◽  
Kenneth R. Hall
Keyword(s):  
Equation Of State ◽  
Critical Region ◽  
Simple Equation ◽  
Pure Compounds
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