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Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):

T. Bednar:
"Approximation of liquid moisture transport coefficient of porous building materials by suction and drying experiments. Demands on determination of drying curve.";
Vortrag: 6th Symposium on Building Physics in the Nordic Countries, Trondheim; 17.06.2002 - 19.06.2002; in: "Proceedings of the 6th Symposium on Building Physics in the Nordic Countries", (2002).



Kurzfassung englisch:
Numerical models are able to describe moisture transfer processes very accurate. Based on simple experiments the moisture transfer coefficients can be approximated with a reasonably accuracy. Comparing different experiments should always include the statistical variations of the material data, as the drying experiment is very sensitive on the moisture transfer coefficient in the middle moisture content region.

If one uses drying experiments to validate models or approximate transfer coefficients the setup of the drying experiments can have an influence on the accuracy in a very subtile way. The presented results show, that if the temperature difference across the drying surface is higher than 1.5 Kelvin the drying behaviour at middle and lower moisture contents differs from what is expected using one-dimensional calculation models.

Based on the presented results, the setup of drying experiments can be designed to get a very good approximation of a one-dimensional drying experiment.

Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.