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September 10, 2025Urban ScienceOpen Access

Simulation and Statistical Validation Method for Evaluating Daylighting Performance in Hot Climates

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Simulation reveals optimal facade design improves daylighting performance in hot arid climates, indicating design choices impact energy efficiency.

High Window-to-Wall Ratio (75%) with clear glazing achieved 92% Spatial Daylight Autonomy in living areas, but increased Annual Sunlight Exposure to 53%.
Optimal balance for daylight distribution and Annual Sunlight Exposure occurred at 50% Window-to-Wall Ratio, maintaining levels below 33%.
Statistical analysis indicated a strong positive correlation (r = 0.84) between Spatial Daylight Autonomy and Annual Sunlight Exposure for high glazing configurations.
Moderate glazing, medium WWR, and moderate color finishes were found to enhance daylight performance and visual comfort across different room types.

Sherif et al. (2025) studied this question.

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Simulation reveals optimal facade design improves daylighting performance in hot arid climates, indicating design choices impact energy efficiency.