Natural Lighting Optimization Design For Side Windows Of Office Buildings In Shandong

With the development of office buildings,office workers are highly conscious of the comfort of the indoor environment,and the lighting quality of the office space has become particularly important.Natural light is a kind of green energy relative to artificial light sources and has its unique advantages.It is of great significance to make full use of natural light in office space and create a comfortable indoor natural light environment.Most areas in Shandong belong to the category IV photoclimatic zone,and there are relatively few sunshine resources.The optimization of natural lighting in office buildings has become a more important issue.This article starts from the current status of the interior light environment of office buildings,conducts on-the-spot investigations of office buildings in Shandong,and measures the indoor illumination of the office space,summarizing the problems in the light environment of office buildings.Based on the related theories of architectural light environment and the characteristics of photoclimate in Shandong,Ecotect and Desktop Radiance lighting simulation software were used to simulate the lighting of the orientation,side-window form,and shading members.The window modes mainly included window area ratio and side windows size,side window position,light transmittance of glass materials.shading forms include horizontal shading,vertical shading,integrated shading,baffle shading.According to the simulation results,the natural lighting optimization design strategy for side windows of office buildings in Shandong Province is summarized.The main points include the following:(1)The maximum depth of natural lighting in the southbound office meeting the specification requirements is 5.2m,and the worktable should be arranged at 1.7m from the side window.In addition,the glare can be effectively avoided;the maximum depth of the north office to meet the lighting requirements is 4.2m,0.7m-2.2m away from the side window can be used as an office area;the eastbound and westbound offices are respectively in the distance window 1.7m-2.7m and 1.2m-1.7m lighting effect is relatively good.(2)Increasing the area of the window area increases the amount of light entering the room,and the area of the indoor work surface that meets the lighting requirements increases,which has little effect on the uniformity of the lighting.(3)The ratio of side window width to opening width is 0.6-0.7,and the ratio of side window height to depth is 0.3-0.4,which is most conducive to the indoor lighting effect of office space.(4)The distance between the lower side of the side window and the indoor floor is properly increased,the indoor lighting is more uniform,and the high illumination of the near window part can be avoided.(5)The fixed sun visor can improve the indoor lighting uniformity and comfort,but it affects the lighting efficiency at other times of the day.The use of movable sun visors in Shandong Province is more beneficial to natural lighting.