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Physically based equations of state for pure and mixed fluids.

Project Leader
Fischer Johann, Project Leader
Type of Research
Basic Research
Project partners
Institute for Physical Chemistry, Portugal.
Function of the Project Partner: Partner
University of A Coruña, 15001 A Coruña, Spain.
Function of the Project Partner: Partner
University of Halle, Institute for Physical Chemistry, Germany.
Function of the Project Partner: Partner

Further information:

Wendland Martin, Project Staff
Gast Vor, Project Staff (bis 31.03.2009)
BOKU Research Units
Institute of Chemical and Energy Engineering (IVET)
Funded by
Austrian Science Fund (FWF) , Georg-Coch-Platz 2, 1010 Wien, Austria
Thermodynamic equations of state are developed on the basis of intermolecular interactions. The Helmholtz energy is written as a sum of contributions from characteristic interactions. For each contribution mixing rules have to be developed. The development is supported by molecular simulations.
energy technology; thermodynamics; thermal engineering; refrigeration engineering;
mixing rules; thermodynamic properties; equations of state;

** Weingerl, U., Fischer, J. Consideration of dipole-quadrupole interactions in molecular based equations of state.

Fluid Phase Equilibria, 202, 49-66 WoS

Nezbeda, I; Weingerl, U (2001): A Molecular-Based Theory for the Thermodynamic Properties of Water.

Molecular Physics, 99, 1595-1606

Weingerl, U. (2001): Physically Based Equations of State for Polar Fluid Mixtures and Water.

Dissertation an der Universität für Bodenkultur Wien, 118; Wien FullText

** Weingerl, U., Fischer, J. A mixing rule for the quadrupolar contribution to the Helmholtz energy..

Fluid Phase Equilibria, 171, 59-76 WoS FullText FullText_BOKU

Weingerl, U., Wendland, M. (2000): Description of binary and ternary mixtures of R125, R134a, and R143a with BACKONE equations..

In: IIF, IIR (Eds.): 20th International Conference of Refrigeration, IIR/IIF, Sidney, 1999, pap. N. 538, CD-ROM, IIF/IIR, Paris FullText

** Calero, S; Wendland, M; Fischer, J Description of alternative refrigerants with BACKONE equations.

FLUID PHASE EQUILIBRIA. 1998; 152(1): 1-22. WoS FullText FullText_BOKU

** Kriebel, C., Mecke, M., Winkelmann, J., Vrabec, J., Fischer, J. An equation of state for dipolar two-center Lennard-Jones molecules and ist application to refrigerants..

Fluid Phase Equilibria, 142, p.15 WoS FullText FullText_BOKU

** Mecke, M., Müller, A., Winkelmann, J., Fischer, J. An equation of state for two-center Lennard-Jones fluids..

Int. J. Thermophys., 18, 683 WoS FullText FullText_BOKU

** Aguiar Ricardo, A., Nunes da Ponte, M., Fischer, J. Second virial coefficients of mixtures of xenon and lower hydrocarbons. II: Results for Xe and C2H4 and theoretical calculations..

J. Physical. Chemistry, 100, p. 18844 WoS FullText

** Kriebel, Ch., Müller, A., Winkelmann, J., Fischer, J. A hybrid equation of state for Stockmayer pure fluids and mixtures..

Fluid Phase Equilibria, 119, p. 67 WoS FullText FullText_BOKU

** Mecke, M., Müller, A., Winkelmann, J., Vrabec, J., Fischer, J., Span, R., Wagner, W. An accurate van der Waals type equation of state for the Lennard-Jones fluid..

Int. J. Thermophys., 17, 391 WoS FullText FullText_BOKU


Fischer, J. (2000): Zustandsgleichungen auf der Grundlage der Statistischen Thermodynamik und Spezifische Mischungsregeln..

DFG-Workshop "Thermische Zustandsgleichungen", Universität Kiaserslautern, 13. Januar 2000, Kaiserlauten

Fischer, J. (1998): Thermodynamics of alternative refrigerants:Influence of quadrupolar interactions..

European Molecular Liquids Group, 15. September 1998, Murau

Fischer, J. (1998): Beschreibung alternativer Kältemittel mit BACKONE Gleichungen..

VDI-Thermodynamik Kolloquium, 5. Oktober 1998, Leipzig

Fischer, J. (1997): Specific Mixing Rules: Test and Application..

Thirteenth Symposium on Thermophysical Properties, 24. Juni 1997, Boulder

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