Optimization of Daylight and Thermal Performance of Building Facade: A Case Study of Office Buildings in Nanjing

In China's hot summer and cold winter areas, the facade design of buildings needs to respond to a variety of performance objectives. This study focuses on the optimization of daylight and solar radiation of building facade of office buildings in Nanjing and proposes a simple and efficient method. The method mainly includes a random sampling of design models, simplified operation of daylight performance criteria and selection of optimal solution. The results show that the building facade can improve the indoor lighting uniformity and reduce the indoor illumination level compared with the unshaded reference building. Besides, the amount of solar radiation received by office buildings in summer and winter becomes more balanced with the building facade. The optimization design method of building facade proposed in this study can be of guiding significance for office buildings in Nanjing.