Thermodynamics experts from Zittau/Görlitz University of Applied Sciences present research results in the USA, Canada and Sweden.
19th Symposium on Thermophysical Properties in Boulder, Colorado, USA
From the Department of Engineering Thermodynamics at the Faculty of Mechanical Engineering, Prof. Dr.-Ing. habil. Hans-Joachim Kretzschmar, Dr.-Ing. Sebastian Herrmann and Dipl.-Ing. (FH) Matthias Kunick took part in the most important international conference in the field of thermophysical properties of gases, liquids and solids. This conference takes place every three years.
Mr. Kunick presented the method developed at the Department of Technical Thermodynamics for the rapid calculation of the material values of working fluids in energy technology using spline interpolation. This method, developed as part of his cooperative doctorate with the Technical University of Dresden and the German Aerospace Center (DLR), is particularly suitable for calculating the material properties of real gases and liquids in numerical flow simulations.
Dr. Herrmann presented a newly developed calculation equation for the dynamic viscosity of propane. Dr. Herrmann laid the foundations for creating such transport correlations as part of his doctorate at the University of Rostock, which he completed with distinction in the spring of this year. This work was completed while he was working as a research assistant and lecturer at the Zittau/Görlitz University of Applied Sciences.
An international industry standard of the International Association for the Properties of Water and Steam (IAPWS) for the calculation of the thermodynamic properties of seawater in desalination plants and power plant cooling systems, which was adopted in 2013, was presented as a poster contribution. This standard was developed at the Department of Technical Thermodynamics at the Zittau/Görlitz University of Applied Sciences by Dr. Herrmann in cooperation with the Leibniz Institute for Baltic Sea Research Warnemünde and the Ruhr University Bochum.
Two posters and a computer presentation presented material value calculation programs that have been developed in recent years at the Department of Technical Thermodynamics under the direction of Prof. Kretzschmar. For many software products used in everyday engineering, such as Excel, MATLAB and Mathcad, connections for these material value programs were presented.
15th Meeting of the International Association for Transport Properties in Boulder, Colorado, USA
Dr. Herrmann took part in the 15th meeting of the International Association for Transport Properties (IATP) in Boulder in order to initiate possible new research projects in the field of transport properties of gases and liquids at the Department of Engineering Thermodynamics. At this year's conference, Dr. Herrmann was accepted as a member of the IATP.
IAPWS 2015 Annual Conference in Stockholm, Sweden
Prof. Kretzschmar and Mr. Kunick took part in the annual conference of the International Association for the Properties of Water and Steam (IAPWS). Prof. Kretzschmar is elected Vice President of the IAPWS and Chairman of the German National Committee. The calculation method developed at the Zittau/Görlitz University of Applied Sciences for the rapid calculation of material values with spline interpolation was adopted by the IAPWS as an internationally binding guideline for the calculation of material values in computational fluid dynamics (CFD) and transient process simulations. This result represents a particular success of the work in the field of material value thermodynamics at the Department of Technical Thermodynamics. It was decided that the next annual conference of the IAPWS will be organized by the Zittau/Görlitz University of Applied Sciences in Dresden in 2016.
ASME Turbo Expo 2015 in Montreal, Canada
With over three thousand participants, ASME Turbo Expo is the world's largest conference in the field of turbomachinery. One thematic focus is on numerical flow simulation with computational fluid dynamics (CFD). These extremely complex process simulations require very precise calculation algorithms with which the thermophysical properties of the working fluids used can be calculated extremely quickly. For this purpose, Mr. Kunick developed the spline-based material value calculation method SBTL in a cooperative doctoral project between the Dresden University of Technology and the Zittau/Görlitz University of Applied Sciences. The results were presented in a lecture and the corresponding publication at the ASME Turbo Expo 2015. In subsequent talks, potential follow-up projects were discussed with representatives of well-known companies.
2015 ASHRAE Conference in Atlanta, USA
At the conference of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) in Atlanta, Dr. Herrmann presented calculation programs for the thermodynamic properties of humid air that were developed at the Zittau/Görlitz University of Applied Sciences. Another important aspect of the participation was the collaboration in the research project for the development of a new ASHRAE standard for the calculation of the thermodynamic properties of humid air. Based on this work, ASHRAE commissioned a further research project in the field of transport properties (thermal conductivity and viscosity).
Photos: Prof. Dr.-Ing. habil. Hans-Joachim Kretzschmar,Dipl.-Ing. (FH) Matthias Kunick, Dr.-Ing. Sebastian Herrmann
Prof. Dr.-Ing. habil. H.-J. Kretzschmar
Faculty of Mechanical Engineering
Department of Technical Thermodynamics
Phone and fax: 03583-61-1846
E-mail: hj.kretzschmar(at)hszg.de
Internet: www.thermodynamik-zittau.de
