Equations of state valid continuously from zero to extreme pressures for H[sub 2]O and CO[sub 2]

Journal Article · Mon Aug 15 04:00:00 EDT 1994 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.467624· OSTI ID:7085232

Pitzer, K S ^[1]; Sterner, S M ^[2]

---

1. Department of Chemistry and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)
2. Department of Chemistry and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States) Bayerisches Geoinstitut, Universitaet Bayreuth, Postfach 10 12 51, D 95440 Bayreuth (Germany)

A new form of equation of state is proposed for use over extremely wide ranges of pressure where conventional equations fail. In particular, fluids including H[sub 2]O and CO[sub 2] as well as argon, etc., remain more compressible at very high densities than can be represented by typical equations with van der Waals or Carnahan and Starling repulsive terms. The new equation is fitted to the data for H[sub 2]O and CO[sub 2] over the entire range from the vapor and liquid below the critical temperature to at least 2000 K and from zero pressure to more than 10[sup 5] bar (10 GPa) with good agreement. The extension of the equation for mixed fluids is discussed.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7085232
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 101:4; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPRESSION
CRITICAL TEMPERATURE
DISPERSIONS
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
FLUIDS
GASES
HIGH PRESSURE
HYDROGEN COMPOUNDS
LIQUIDS
MEDIUM PRESSURE
MIXTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
RARE GASES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VAPORS
VERY HIGH PRESSURE
WATER