Study On Optimization Strategy Of Natural Lighting In Classrooms Of Colleges And Universities In Xi’an

Natural lighting can introduce natural light into buildings.Compared with artificial lighting,it has many advantages,such as beneficial to people’s mental health,eye and vision development,and improving work and learning efficiency.If natural lighting can be used efficiently for lighting,it can reduce the use of artificial light sources,reduce building energy consumption,and low carbon and environmental protection.As an important place for college students to attend classes,read and study,the classroom space also has higher requirements for the quality of light environment than other building spaces.In recent years,China’s colleges and universities have undergone a large number of expansion,and the number of teaching buildings has risen rapidly,and the natural lighting problems exposed by them have become more and more serious.At the beginning of the design of teaching buildings in colleges and universities,designers often ignored the lighting design,which led to many lighting problems in the classroom,such as insufficient illumination,uneven lighting,and serious glare.Therefore,this paper takes the university classroom space in Xi’an as the research object of natural lighting,and proposes design strategies to improve the quality of classroom lighting environment.In this context,first of all,the author has read a lot of relevant literature,sorted out the relevant research results of natural lighting in university classrooms at home and abroad,summarized and analyzed the characteristics of light climate,lighting design specifications,natural lighting evaluation index simulation software and design factors of classroom natural lighting in Xi’an.Then,the natural lighting status and measurement dimensions of teaching buildings and classrooms in Xi’an University are preliminarily investigated and statistically classified.On the basis of preliminary investigation,eight classrooms of four representative teaching buildings were selected as the research objects,and the illumination test was carried out using the on-site test method.The characteristics of natural lighting in each classroom were summarized.On this basis,the problems and causes of natural lighting in Xi’an university classrooms were summarized.Then,according to the previous research data and specification requirements,the simulation and analysis classroom model is established.The natural lighting design factors,such as classroom orientation,space size,side window size and arrangement,lighting auxiliary facilities,classroom material,and skylight design,are simulated respectively by using the Greenhousesville Dali2023 lighting analysis software and the control variable method,and the influence rules of each factor are summarized.According to the influence rules obtained above,the natural lighting design strategy of Xi’an university classroom is summarized.Finally,a classroom in the teaching building of Yanta Campus of Xi’an University of Architecture and Technology was selected as the design strategy verification and lighting optimization object.The classroom was optimized from four aspects,namely,the size and arrangement of side windows,the implantation design of lighting auxiliary facilities,and the classroom material.The quality of the classroom space lighting environment before and after the optimization was compared and analyzed from two aspects of static indicators and dynamic indicators,Prove the feasibility of the optimization design strategy.