绿色建筑中导光管采光质量研究

在绿色建筑中采用导光管能提供良好的室内光环境，有利于人们的健康。鉴于以往关于导光管的研究缺乏对采光质量的分析，以两种不同内壁的长径比为2~10的导光管为例，系统地研究了导光管光谱反射率、长径比对透射光显色性和非视觉效应的影响，并与两种常见灯管对比。首先利用TracePro软件和光谱照度计分别获得导光管透射光和灯管的相对光谱，然后计算了光源的一般显色指数（Ra），最后通过Ra数值及相对光谱功率峰值波长位置评价了导光管和灯管的显色性和非视觉效应。结果表明：绿色建筑在选择照明系统时，宜优先选择光谱反射率分布均匀的导光管，同时控制长径比保证优越的采光质量；在条件不允许安装导光管的空间，可选择人工光源替代，同时尽量避免长时间连续使用对人们健康造成损害。

Research on the lighting quality of light pipes in green buildings

The use of light pipes in green buildings can provide a good indoor light environment, which is beneficial to people''s health. In view of the lack of analysis of light-giving quality in previous studies on light pipes, the effects of spectral reflectance and aspect ratio of light pipes on color rendering and non-visual effects of transmitted light were systematically investigated. Taking two light pipes with different inner walls and aspect ratios of 2~10 as example, and compared with two common lamps. Firstly, TracePro and spectral illuminance meter were used to obtain the relative spectra of transmitted light and lamp respectively. Then the general color rendering index (Ra) of light source was calculated. And finally the color rendering and non-visual effect of light pipes and lamp were evaluated by Ra value and relative spectral power peak wavelength position. The results show that when choosing lighting systems for green buildings, it is advisable to give priority to light pipes with uniform spectral reflectance distribution, while controlling the aspect ratio to ensure superior light quality. And in spaces where conditions do not allow the installation of light pipes, artificial light sources can be used instead, while trying to avoid damage to people''s health from long-time continuous use.