Qin Lai
ABSTRACT
The optimization of the window-to-wall ratio (WWR) is crucial for creating a comfortable lighting environment and reducing air conditioning energy consumption in office buildings. This study focuses on a selected office building in Chengdu, China. It employs Designbuilder software to numerically simulate the variations in indoor illuminance and air conditioning energy consumption under different types of windows, considering the impact of WWR. The costs of different window types and the operational electricity expenses for air conditioning are also calculated. The research findings indicate that a single layer of 6 mm clear window with a WWR of 0.4 is optimal for satisfying daylighting requirements in office buildings. Regarding energy efficiency in office buildings, the preferred option is a low-emissivity double-glazed window (6low-e+6A+6 mm) with a WWR of 0.5. Considering cost-effectiveness, a single layer of 6 mm blue window with the minimum window-to-wall ratio is the best selection. Considering daylighting, energy efficiency, and economic benefits holistically, a low-emissivity double-glazed window (6low-e+6A+6 mm) with a WWR of 0.5 is the optimal choice.
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Index Terms
- Smulation Study on Window to Wall Ratio Optimization of Different Window Typesin Office Buildings in Chengdu
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