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Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):

K. Eder, M. Neusser, T. Bednar:
"Effect of different façade systems on the cooling capacity of a cooled ceiling - CFD modeling";
Vortrag: 10th Nordic Symposium on Building Physics, Lund, Sweden; 15.06.2014 - 19.06.2014; in: "NSB 2014,10th Nordic Symposium on Building Physics", Grafisk gruppen AB, (2014), ISBN: 978-91-88722-53-9; Paper-Nr. 6, 8 S.



Kurzfassung englisch:
One of the key issues for the calculation of a room´s condition and the resulting thermal comfort is the knowledge of the air flow distribution in the room. A simplified but still accurate enough CFD
model should be developed to determine the effect of different façade types on the cooling capacity of a cooling ceiling. A parametric study using the program COMSOL Multiphysics 4.3a was done. The
output of the calculations was compared with the results of a series of in-situ measurements and is presented in this paper.
The measurement and the calculation results show an impact on the cooling capacity by changing air flow conditions within the room. The design of the façade system can increase the capacity of a cooling ceiling and therefore decrease the operative temperature in the room. Neglecting the flow characteristics in the room can lead to incorrect results, especially for complex façade systems in combination with component activation (e.g. cooling ceiling).
Therefore an enhanced building model for the design of future buildings, taking into account the interaction of building envelope and building service systems should be developed using the results of
the CFD calculation. Recommendations for energy active buildings related to room conditions, room comfort and the energy demand can be formulated by simulations over yearly periods.

Schlagworte:
façade systems, natural ventilated double skin façade, computational fluid dynamics, operative temperature, cooling capacity, comparison measurement and CFD calculation

Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.