直管式导光管采光系统缩尺模型制作与测试

Making and testing of scale model of straight tubular daylighting system

为了验证缩尺模型评价直管式导光管采光系统采光效果的可行性,设计并制作了2套方形直管式导光管采光系统的简易缩尺模型实验装置,每套装置包含2种不同缩尺比例的模型;在室外全阴天环境下,利用多通道照度计,测试了这些模型室内、外的照度;通过计算、比较和分析测试结果,发现同一装置内2种不同比例模型内地板上的采光穿透系数分布和平均值基本上一致,差别小于10%,表明缩尺模型可用于模拟直管式导光管采光系统的采光环境。

In order to verify the feasibility of the scale model to evaluate the lighting effect of the straight tubular daylighting system, two sets of simple scale model experimental devices for such system are designed and manufactured. Each device contains two models with different scale ratios. The illuminance of these models in and out of the room is measured by the multi-channel illuminance meter in the outdoor all overcast environment. Through the calculation, comparison and analysis of the test results, it is found that the distribution and average value f of the light penetration coefficient on the floor of two different proportion models in the same device are basically the same, and the difference is less than 10%, which shows that the reduced scale model can be used to simulate the light environment of the straight tube light guide system.