Equations of state valid continuously from zero to extreme pressures with H₂O and CO₂ as examples

Conference · Tue Mar 01 04:00:00 EST 1994

OSTI ID:10150766

Pitzer, K. S. ^[1]; Sterner, S. M. ^[2]

---

1. Lawrence Berkeley Lab., CA (United States)
2. Bayerisches Geoinstitut, Universitaet Bayreuth, 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 H₂O and CO₂ 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 H₂O and CO₂ 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 10² bars (10 GPa) with good agreement. Extension of the equation for mixed fluids is discussed.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 10150766
• Report Number(s): LBL--35354; CONF-940633--2; ON: DE94011907
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
CARBON DIOXIDE
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
COMPRESSIBILITY
CRITICAL TEMPERATURE
DENSITY
EQUATIONS OF STATE
EXTRAPOLATION
WATER