Evaluating Visual Comfort in Semi-Transparent Perovskite Solar Window Integration for Building Design in Qatar's Hot Climate

Among various solutions in sustainable building design, optimum interior daylight is vital in improving visual comfort and occupants' well-being. Semi-transparent perovskite solar windows have emerged as a promising solution because they offer energy generation and enhance daylighting performance. In hot desert climates, such as Qatar, the high intensity of solar radiation poses various challenges to achieving a comfortable visual environment. This paper focuses on the ST-PSW's impact on daylighting and glare issues. The research will determine an optimum value of WWR and VLT for office buildings in Qatar that provides a better balance between natural light intake and visual comfort. Simulations were performed in Grasshopper for Rhino, while daylighting analyses were performed using Radiance software. The outcome of these analyses indicates that 40% WWR with a VLT of 0.4 is an ideal solution providing the most daylight yet limiting glare. However, supplementation through artificial light sources may be required in certain areas. A 60% WWR with the same VLT allows for better distribution of natural light; however, this may involve the use of shade in winter months. The best combination is 60% WWR with a VLT value of 0.3, which presents the optimal distribution between daylight and glare control, limiting the need for any extra light source or shading. The research findings will contribute to developing intelligent building strategies and play to Qatar's 2030 vision for sustainable development.