Accession Number:

ADA333040

Title:

FREZCHEM2 A Chemical Thermodynamic Model for Electrolyte Solutions at Subzero Temperatures

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Report Date:

1997-10-01

Pagination or Media Count:

44.0

Abstract:

This report documents a Fortran version of a chemical thermodynamic model for aqueous electrolyte solutions at subzero temperatures, FREZCHEM2, which is a further development of the FREZCHEM model. The model uses thermodynamic data of Spencer-Moller- Weare that permit the calculation of chemical equilibria in the Na-K-Ca-Mg-Cl-S04-H2O system between -60 and 25 deg. C at atmospheric pressure. It applies the Gibbs energy minimization method for chemical equilibrium computation combined with Pitzer equations for activity coefficients and water activity calculation. phases.

Subject Categories:

  • Physical Chemistry
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE