Study On Optimal Design Of Indoor Natural Light Environment For Qingdao Urban Residence

With the development of urbanization in China,there is still a great market demand for residential buildings.As the improvement of people’s living standard,the requirement of living environment is developing from the heat preservation and cold prevention to the more comfortable physical environment.Residence is an important place for people to live.And the indoor light environment comfortable or not will directly affect the health and mood of residents.Natural light has the advantage that artificial illumination does not have,it is considered to be an important physical condition that affects the evaluation of users’ satisfaction with the built environment.Natural light not only be helpful to physical and mental health,and can also save energy.In this context,it is of great significance to study and improve the natural light environment of the residence.First of all,this paper sorted out the related concepts of natural light environment and lighting standards of domestic and foreign residences,then compared and analyzed the characteristics of domestic and foreign norms and the changes of requirements of indoor lighting standards since the 1990 s in China.Based on the above analyses,this paper conducted field investigation and measurement of indoor light environment of existing residences from the 1980 s to the present in Qingdao,and understood residents’ subjective feelings of natural light in the living environment through questionnaires.Then,through field measurement and investigation,the existing problems and deficiencies of indoorlight environment in residential buildings were summarized,the average of natural light coefficient or the main reason of low evenness of natural light are layout design,room orientation,light sheltered by the balcony and so forth,and concluded that increasing the amount of indoor natural light and improving the uniformity of indoor natural light are the key points of indoor lighting in urban residential buildings of Qingdao area.Finally,various factors affecting the indoor natural light environment,such as balcony form,concave and convex of architectural form,window form,width ratio of housing type etc.were simulated and analyzed with Ecotect and Radiance software,and optimized design methods suitable for urban residence in Qingdao were obtained.Based on the problems of natural lighting found in the actual investigation,optimal design methods of natural lighting for urban residence in Qingdao were obtained,hoping to provide beneficial references for improving the level of natural lighting,saving lighting electricity and improving the quality of living.