Equations of state valid continuously from zero to extreme pressures with H{sub 2}O and CO{sub 2} as examples

Journal Article · Wed Mar 01 04:00:00 EST 1995 · International Journal of Thermophysics

DOI:https://doi.org/10.1007/BF01441917· OSTI ID:75394

Pitzer, K S ^[1]; Sterner, S M ^[1]

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1. Lawrence Berkeley Lab., CA (United States)

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.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 75394
• Report Number(s): CONF-940633--
• Journal Information: International Journal of Thermophysics, Journal Name: International Journal of Thermophysics Journal Issue: 2 Vol. 16; ISSN IJTHDY; ISSN 0195-928X
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ARGON
CARBON DIOXIDE
CRITICAL TEMPERATURE
EQUATIONS OF STATE
EXPERIMENTAL DATA
HIGH PRESSURE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
WATER