Optimization of Plastic Mesh Shading Systems for Improved Daylighting and Solar Gain Control

Ensuring optimal daylighting and solar control in buildings is essential for improving occupant well-being while reducing energy demand. This study explores the potential of plastic meshes, commonly used in various industrial applications, as cost-effective, low-maintenance static shading devices. Through a technology transfer approach, 14 commercially available plastic meshes were selected from broader research, digitally reconstructed, and assessed for their shading performance. The present study focuses on two promising samples. Firstly, a rapid assessment methodology was developed through a parametric workflow using Rhinoceros-Grasshopper, combined with climate-based daylight simulations, to have a preliminary evaluation of the shading effectiveness potential of the 2 selected products. Then, a geometric optimization process was conducted aiming at improving the shading efficiency of meshes applied as static shading devices. The results demonstrated that optimized mesh geometries could achieve summer shading factors above 75% while maintaining adequate solar gains in winter, making them a viable alternative to conventional shading systems. The second phase of the research assessed the impact of these shading devices on visual comfort in a reference office space. Useful daylight illuminance (UDI) analysis showed that both samples effectively improved daylight conditions for desks near the window but led to reduced visual comfort further into the room. These findings suggest that such static shading solutions are best suited for spaces with limited depth. This research underscores the scalability and economic benefits of plastic mesh shading systems and their potential integration into adaptive façade design. Additionally, it lays the groundwork for future advancements, including the incorporation of dynamic movement to enhance performance.