摘要
本文使用前文(Ⅰ)所述的实验装置,对六种类型总日射表(TBQ—1、TBQ—2、DFY—2、DFY—4、EPPLEY 8—48及EPPLEY PSP)的倾斜效应进行了测试,给出各类表的测试数据及经验公式,结果表明:各类总日射表确实存在着倾斜效应,并且各自的规律不同,最大的约为—6.2％(EPPLEY 8—48表)。还对测试结果的误差进行了估计,最后对总日射表倾斜效应的产生原因进行了定性分析。
The inclined effects of six pyranometers, namely, EPPLEY PSP, EPPLEY 8-48, TBQ-2, DFY-2 and DFY-4, are measured at various angles between 0°-180° with an interval of 15°, by using the experimental apparatus introduced in the paper (Ⅰ). Experimental data, empirical formula and estimated measuring uncertainties are given. The experimental results indicated that all six pyranometers possess inclined effects but they are different from each other, the maximum of the inclined effect being -6.2%, which is obtained with EPPLEY 8-48 when its element is perpendicular to the horizon. Finally, a qualitative discussion on the main causes of this inclined effect is presented.
关键词
总日射表
倾斜效应
Pyranometer, inclined effect.
