A Field Investigation of Integrated Daylighting and Artificial Lighting in Primary School Classrooms
With the increase in the prevalence of myopia among students,the indoor luminous environment has received increasing attention.The current research and standards on the classroom luminous environment separate natural lighting from artificial lighting,and there is limited research on the commonly-seen integrated lighting(indoor lighting is affected by daylight and artificial light at the same time).Based on a primary school in Beijing,this study investigated the quantity and quality of different integrated lighting scenarios in classrooms,i.e.,illuminance levels and visual comfort.The results show that the illuminance away from windows that only rely on daylighting is low,the illuminance uniformity is poor,failing to provide sufficient illuminance throughout the day.Therefore,artificial lighting should be used to form integrated lighting.For the excessive illuminance near the window,shading measures should be taken.Using daylighting,artificial lighting,and appropriate shading measures comprehensively,the uniformity of illuminance increased from 0.45 to 0.73,and the highest value of unified glare rating dropped from 20.48 to 10.54,indicating that proper shading combined with artificial lighting can provide sufficient illuminance and a small glare probability.
daylightingartificial lightingintegrated lightinghigh dynamic range imageeye movement
NETL
NSTL
万方数据
