Energy Improvement Study of a Double-Skin Façade in Winter Conditions

Abstract:

A numerical study of a natural convection flow coupled with radiation was carried out in a double-skin façade. The solar radiation flux to which the double-skin façade is subjected has been chosen for a cold season month (φ = 66.9 W/m² ). The double-skin façade is installed on a building whose interior temperature is 293 K given that the temperature at the inlet in winter conditions is 255 K. This study focuses on 5 different widths of the double-skin façade (4, 6, 8, 10 and 12 cm). Three-dimensional numerical simulations have been carried out for a steady and turbulent flow. Transport equations of mass, momentum and energy are solved numerically using finite volume method. Velocity and temperature profiles show the differences between all the above mentioned 5 cases in order to highlight the optimal width of the double-skin façade.

• Periodical: Advanced Engineering Forum (Volume 21)
• Pages: 453-459
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.21.453
• Online since: March 2017
• Authors: Theodor Bratosin, Eugen Iavorschi, Cristian Chereches*, Catalin Popa
• Keywords: CFD, Double Skin Facade, Natural Convection, Radiation, Turbulent Flow

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