## Augmented BACK Equation of State for Polar Fluids The pressure of water is decoupled into a polar pressure and a nonpolar pressure, the latter being obtained from the BACK equation based on the size and nonpolar energy of the water molecule determined by Jorgensen and coworkers. The polar press
Augmented BACK equation of state II: Polar fluid mixtures
β Scribed by M. J. Lee; K. C. Chao
- Publisher
- American Institute of Chemical Engineers
- Year
- 1988
- Tongue
- English
- Weight
- 540 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0001-1541
No coin nor oath required. For personal study only.
β¦ Synopsis
The augmented BACK equation of state for polar fluids is extended to mixtures by introducing mixing rules separately for the nonpolar and polar interactions. Fluid phase equilibria are calculated for polar + nonpolar, and polar + polar mixtures including mixtures of hydrogen-bonding substances. Enthalpy calculations are illustrated with enthalpy of H, S + N, and heats of mixing of steam mixtures, and carbon dioxide mixtures.
Cross interaction coefficients are adjusted for the correlation of data on binary mixtures. Both phase equilibrium and enthalpy data are correlated at the same time with two such coefficients for each binary. The cross interaction coefficients are constants, invariant with temperature, density, or phase state.
π SIMILAR VOLUMES
## Abstract We propose an equation of state for fluid mixtures of water + ammonia which is expressed in Helmholtz free energy as a function of temperature, molar volume, and mole fraction. IAPWS Formulation 1995 for water and the equation of state by TillnerβRoth and colleagues for ammonia should b