Comparing the efficiency of solar shading devices in reducing building cooling needs
(2015) Advanced Building Skins — Location: Bern, Switzerland (3.November.2015)
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- Abstract
- Many studies have shown the effectiveness of shading devices in reducing building cooling needs. However, the choice of a specific shading device remains quite difficult for designers. And this, because precisely quantifying the impact of solar shading requires properly considering the physical behaviour of the solar shading device and its dependence of angle of incidence. The modeling of window complex systems by Bi-directional Scattering Distribution Functions (BSDF) allows this detailed characterisation in simulation software’s. Based on thermal simulations integrating BSDF properties measurements of common screens and venetian blinds, this paper shows and discusses the impact of the choice of the solar shading device on thermal comfort. Using Window 7 software and EnergyPlus 8 building energy simulation program, it studies and compares, according to the orientation, the impact of six screens of different colours and opening factors and 4 venetian blinds of different slat materials and colours on a standard office room cooling needs. Finally, this paper highlights the main properties of internal and external shading devices guaranteeing the best reduction of cooling needs.
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Dartevelle, O., Bodart, M., & Deneyer, A. (2015). Comparing the efficiency of solar shading devices in reducing building cooling needs. EnergyForum - 10th Conference on Advanced Building Skins. Published. Advanced Building Skins, Bern, Switzerland. https://hdl.handle.net/2078.5/188216