Underground Garage Skylights Lighting Technology Research Of Ⅴ Class Light Climate Zone

With the rapid development of urbanization, urban population is growing, private car ownership increased, with the construction of parking standards improved. On limited land, underground garage construction is growing. Underground garage needs 24 hours lighting, power-hungry. Vision Scientific research shows that natural light than artificial light has a higher visual effect, more comfortable and environmentally friendly. Therefore, underground garage make use of natural light can not only effectively improve its light environment, but also conducive to energy conservation.Through survey found that underground garage in majority of Chongqing city is artificial lighting, only a relatively small part of the design of them is natural skylights. Most of the underground garage in Chongqing qualified use of mountain terrain design special skylights. In this paper,main research object is garage light environment of Chongqing residential area underground garage, the analysis of Chongqing light on the basis of climate, lighting design standards combined with architectural lighting design standards to guide the design of underground garage roof. On the basis of the existing research of skylight, with a software simulation of skylights factors Chongqing represented Ⅴ class light climates than for windows, high aspect ratio, the wall design, the wall materials, mining mask materials, ground reflectance simulation analysis, optimal design strategies in Chongqing underground garage skylights illuminating on this basis.The main work and conclusions of the paper are: ① through literature research and field survey and measurement, found the main city of the underground garage lighting illuminating the problems; understand the questionnaire driver for underground light environment, ventilation and skylights opinions garage. ② Ecotect software combines Radiance, simulation analysis for the Chongqing area underground garage skylight design elements to daylight factor and illuminance average of evaluation, summarized the appropriate form of optimization strategies and skylights material optimization strategy. ③ use illumination and illumination uniformity evaluation proposed for artificial lighting and skylights fill light adaptation strategies, comfortable and energy to form an underground garage light environment. ④ recommended illuminance values consistent with the underground garage Chongqing area.