An hourly based performance comparison of an integrated micro-structural perforated shading screen with standard shading systems

This article evaluates the performance of an integrated micro structural perforated shading screen (MSPSS). Such a system maintains a visual connection with the outdoors while imitating the shading functionality of a venetian blind. Building energy consumption is strongly influenced by the solar gains and heat transfer through the transparent parts of the fenestration systems. MSPSS is angular-dependent shading device that provides an effective strategy in the control of daylight, solar gains and overheating through windows. The study focuses on using direct experimental methods to determine bi-directional transmittance properties of shading systems that are not included as standard shading options in readily available building performance simulation tools. The impact on the indoor environment, particularly temperature and daylight were investigated and compared to three other static complex fenestration systems. The bi-directional description of the systems was used throughout the article. The simulations were validated against outdoor measurements of solar and light transmittance.

► We tested a micro-structural perforated shading screen and other shading systems.
► The measurements were carried out outdoors and in the laboratory.
► We found out that the unique angularly dependent shading systems can be tested.
► BSDF data provides better description of CFS then the normal-incidence information.