Experimental densities, vapor pressures, and critical point, and a fundamental equation of state for dimethyl ether

2007 ◽  
Vol 260 (1) ◽  
pp. 36-48 ◽  
Author(s):  
E. Christian Ihmels ◽  
Eric W. Lemmon
Keyword(s):  
Equation Of State ◽  
Critical Point ◽  
Dimethyl Ether ◽  
Fundamental Equation ◽  
Vapor Pressures ◽  
Fundamental Equation Of State

scholarly journals Fundamental equation of state developed on basis of Migdal’s phenomenological theory of critical point

2020 ◽  
Vol 1683 ◽  
pp. 032026
Author(s):  
S V Rykov ◽  
I V Kudryavtseva ◽  
V A Rykov ◽  
A V Sverdlov ◽  
E E Ustyuzhanin
Keyword(s):  
Equation Of State ◽  
Critical Point ◽  
Fundamental Equation ◽  
Phenomenological Theory ◽  
Fundamental Equation Of State

scholarly journals Method for constructing the fundamental equation of state that takes into account the peculiarities of the substance behaviour in a wide vicinity of the critical point

2021 ◽  
Vol 2057 (1) ◽  
pp. 012112
Author(s):  
S V Rykov ◽  
I V Kudryavtseva
Keyword(s):  
Heat Capacity ◽  
Free Energy ◽  
Equation Of State ◽  
Critical Point ◽  
Fundamental Equation ◽  
Virial Coefficients ◽  
Phenomenological Theory ◽  
Phase Region ◽  
Scale Functions ◽  
Fundamental Equation Of State

Abstract On the basis of the phenomenological theory of the critical point and the Benedek hypothesis, an expression for the Helmholtz free energy F with scale functions in the density-temperature variables has been developed. The proposed free energy equation has been tested on the example of constructing the fundamental equation of state of 2,3,3,3-tetrafluoropropene (R1234yf). By comparison with the known experimental data on the equilibrium properties of R1234yf – density and pressure on the phase equilibrium line, p-ρ-T-data in the single-phase region, the second and third virial coefficients, isochoric heat capacity, isobaric heat capacity and the sound velocity – the operating range of the equation of state of R1234yf has been established according to temperature from 220 K to 420 K and pressure up to 20 MPa.

A fundamental equation of state for the (R134a + triethylene glycol dimethyl ether) mixture

AIChE Journal ◽  
2007 ◽  
Vol 53 (5) ◽  
pp. 1349-1361 ◽  
Author(s):  
Paolo Marchi ◽  
Giancarlo Scalabrin ◽  
E. Christian Ihmels ◽  
Dominique Richon
Keyword(s):  
Equation Of State ◽  
Dimethyl Ether ◽  
Fundamental Equation ◽  
Triethylene Glycol ◽  
Glycol Dimethyl Ether ◽  
Ether Mixture ◽  
Fundamental Equation Of State

Speed-of-Sound Measurements and a Fundamental Equation of State for Propylene Glycol

2021 ◽  
Vol 50 (2) ◽  
pp. 023105
Author(s):  
Tim Eisenbach ◽  
Christian Scholz ◽  
Roland Span ◽  
Diego Cristancho ◽  
Eric W. Lemmon ◽  
...  
Keyword(s):  
Equation Of State ◽  
Propylene Glycol ◽  
Speed Of Sound ◽  
Fundamental Equation ◽  
Fundamental Equation Of State

Fundamental equation of state correlation for hexamethyldisiloxane based on experimental and molecular simulation data

2016 ◽  
Vol 418 ◽  
pp. 133-151 ◽  
Author(s):  
M. Thol ◽  
F.H. Dubberke ◽  
G. Rutkai ◽  
T. Windmann ◽  
A. Köster ◽  
...  
Keyword(s):  
Equation Of State ◽  
Molecular Simulation ◽  
Fundamental Equation ◽  
Simulation Data ◽  
State Correlation ◽  
Fundamental Equation Of State

Fundamental Equation of State for Deuterium

2014 ◽  
Vol 43 (1) ◽  
pp. 013103 ◽  
Author(s):  
I. A. Richardson ◽  
J. W. Leachman ◽  
E. W. Lemmon
Keyword(s):  
Equation Of State ◽  
Fundamental Equation ◽  
Fundamental Equation Of State
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