摘要
该文从实验出发,通过测量夏季3种典型天气状况下光导管的采光性能,得到光通量变化和照度分布的曲线,并同冬季的试验结果进行比较,结果表明夏季晴天时室内光通量值是冬季晴天时的4倍,多云天和阴天时都为冬季的2～3倍。通过比较分析证明,季节变化对光导管的光传输量的影响很大,太阳高度角于室内照度分布的影响也很大。
Through measuring lighting performance of the light-pipe on three typical weathers in summer, the luminous flux and indoor illumination distribution have been obtained. Comparing with the results of winter, the main influence factors for lighting performance of light pipe have been analyzed. The testing data indicate that the value of indoor lumi- nous flux on sunshine in summer is 4 times more than in winter, and it＇ s on cloudy and overcast in summer is 2 to 3 times more than in winter. Through the comparison and analysis, it was proved that seasonal changes greatly impact on the amount of light transmission, and the distribution of the indoor illumination is greatly affected by the solar altitude.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第5期586-590,共5页
Acta Energiae Solaris Sinica
基金
传热与能源利用北京市重点实验室开放基金项目
关键词
光导管
采光性能
光通量
室内照度分布
太阳高度角
light pipe
lighting performance
luminous flux
indoor illumination distribution
solar altitude
