Research on natural lighting design of college gymnasiums in hot summer and warm winter areas based on dynamic lighting evaluation

As a core component of the infrastructure of colleges and universities, gymnasiums have the remarkable characteristics of large number and high frequency of use. However, the current university gymnasiums generally have problems such as roughness and obvious defects in lighting design, leading to low visual comfort and high energy consumption of artificial lighting. The research found that these problems mainly stem from the change of natural light, the shading of the building environment and the unreasonable lighting arrangement. Reasonable use of natural light not only optimizes the indoor sports environment for athletes and improves visual comfort, but also significantly reduces energy consumption, which has a positive impact on athletes' sports training and competition level. Currently, college gymnasiums in Guangzhou area overly rely on artificial lighting and neglect the application of green building technology. This study introduces the dynamic lighting evaluation index into the natural lighting design of Hangzhou university gymnasiums and explores the lighting problems of the gymnasiums and puts forward optimization suggestions through actual measurement and simulation analysis. Firstly, the problem of insufficient quantity and quality of lighting in the gymnasium is summarized through all-day dynamic lighting measurement, and improvement measures are proposed accordingly. Secondly, Ladybug software is used to simulate different lighting outlet designs, evaluate their impact on the lighting environment in the sports venues, and make suggestions for the design of lighting outlets. Once again, a lighting assistance system was added to simulate and analyze its effect on the lighting quality and to derive the optimal design parameters. Finally, the above studies are synthesized to propose the design of natural lighting in Guangzhou university gymnasiums in order to guide the actual projects and achieve sustainable development.