南昌地区太阳辐射资源分析

Analysis of Solar Radiation Resources in Nanchang Region

利用太阳监测系统监测的数据分析南昌地区季节、月、日太阳辐射的变化和规律。结果表明:南昌地区夏、秋、冬季节太阳直射总辐射强度每小时均值最大为1026W/m2;该地区冬季受阴雨天气影响导致冬季的日照时间极短;从都为晴朗天气的太阳辐射情况比较来看,冬季的直射总辐射强度与夏季其实差异不大,但因冬季的全天日照时间低于夏季的原因,直射总辐射量冬季时仍然会低于夏季时。分析南昌太阳直射总辐射强度频数分布可知,超过100W/m2的太阳直射辐射强度占到太阳直射总辐射强度的59.31%,而且分布比较稳定。

The seasonal, monthly and daily changes of solar radiation in Nanchang are analyzed by using the data monitored by the solar monitoring system. The results show that the maximum annual mean of total direct solar radiation intensity in summer, autumn and winter in Nanchang is 1 026 W/m2. The sunshine time in winter is very short due to the influence of rainy and cloudy weather in this area;compared with the solar radiation in sunny weather, the total solar radiation intensity in winter is not significantly different from that in summer. However, the total direct radiation in winter is still lower than that in summer due to the fact that the whole day sunshine time in winter is lower than that in summer. By analyzing the frequency distribution of total solar radiation intensity in Nanchang, it can be seen that over 100 W/m2 of direct solar radiation intensity accounts for 59.31% of total solar radiation intensity, and the distribution is relatively stable.