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不同方位倾斜面上太阳辐射量及最佳倾角的计算
引用本文:杨金焕,毛家俊,陈中华.不同方位倾斜面上太阳辐射量及最佳倾角的计算[J].上海交通大学学报,2002,36(7):1032-1036.
作者姓名:杨金焕  毛家俊  陈中华
作者单位:上海电力学院信息与计算科学系,上海,200090
摘    要:根据天空散射辐射各向异性的Hay模型,计算倾斜面上辐射量,推导得到了冬半年朝向赤道倾斜面最佳角的数学表达式。对我国一些地区不同方位角的倾斜面上月平均日辐射量及最佳倾角进行了计算和分析。结果表明,除了直接辐射量占总辐射量比例较大的地区以外,一般全年最佳倾角总小于当地纬度。当方位角增大时,倾斜面上辐射量要减少,这在高纬度地区尤其明显,因此,必须选择合适的倾角,以尽量减少太阳辐射量的损失。结果还发现,倾斜面方位角与全年最佳倾角的关系曲线和太阳电池的I-V特性曲线形状相似。

关 键 词:倾斜面  太阳辐射量  太阳能  最佳倾角  方位角  平均日辐射量  计算方法
文章编号:1006-2467(2002)07-1032-05
修稿时间:2001年11月12

Calculation of Solar Radiation on Variously Oriented Tilted Surface and Optimum Tilt Angle
YANG Jin-huan,MAO Jia-jun,CHEN Zhong-hua.Calculation of Solar Radiation on Variously Oriented Tilted Surface and Optimum Tilt Angle[J].Journal of Shanghai Jiaotong University,2002,36(7):1032-1036.
Authors:YANG Jin-huan  MAO Jia-jun  CHEN Zhong-hua
Abstract:According to the anisotropic Hay's model of the sky-diffuse radiation and the calculation of solar radiation of tilted surface, a mathematical equation for explicit calculation of the optimum tilt angle on a tilted surface toward the equator during heating season was developed. Monthly mean daily solar radiation on tilted surface and the optimum tilt angle for various azimuth angle of tilted surface in some regions of China were calculated and analyzed, The results show that, yearly optimum tilt angle is usually smaller than local latitude, except those areas where proportion of beam radiation to total radiation is quite great. When azimuth angle increases, the radiation on tilted surface will decrease, which is quite obvious at high latitude. So, selecting correct tilt angle is absolutely necessary in order to decrease the damage in solar radiation. The results also show that the curves of relationship between the azimuth angle of tilted surface and the optimum tilt angle are very similar to the characteristic curves of solar cell.
Keywords:solar energy  solar radiation  optimum tilt angle  azimuth angle
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