1. Institute of Chemical Engineering and Environmental Technology, TU Graz, Inffeldgasse 25, A-8010 Graz, Austria
2. Institute of Technical Thermodynamics and Refrigeration Engineering, Karlsruhe Institute of Technology, Engler-Bunte-Ring 21, D-76131 Karlsruhe, Germany
3. Department of Biochemical and Chemical Engineering, Laboratory of Fluid Separations, TU Dortmund University, Emil-Figge-Straße 70, D-44227 Dortmund, Germany