新疆阿勒泰地区太阳能资源分析与评估

Analysis and Assessment on Solar Energy Resources in Altay Prefecture,Xinjiang

通过理论计算分析,得到由纬度推算天文辐射的线性经验公式。验证了西部模式在阿勒泰地区的实用价值和精度,给出了太阳天文辐射分布、地面太阳总辐射分布等分析、评估图表。依据计算分析,额尔齐斯河、乌伦古河流域地面接收的太阳总辐射能量年平均在5 400～5 700 MJ.m-2。1960年以来总辐射呈下降趋势,达-4.836 2MJ.m-2.(10 a)-1,1999年开始转为上升趋势。45°～46°N的沙漠区域,降水少、纬度低,太阳辐射高,可能达到5900 MJ.m-2,潜力很大。

Altay Prefecture in Xinjiang, west China, is of arid climate. Though its latitudes are a little northern, its solar energy is abundant because of long sunshine duration. Based on the theoretical calculation and analysis, in this paper a linear empirical equation of astronomical solar radiation was developed, and it was reckoned according to the latitudes. The computer software developed is convenient for calculation. The practical values and precision of solar radiation in Altay Prefecture were confirmed, and the distribution of astronomical solar radiation and ground total solar radiation was comprehensively analyzed and assessed. According to the calculated results, the annual to-tal solar radiation energy in the Ertix River and Ulungur River basins varied from 5 400 MJ · m^-2 to 5 700 MJ · m^-2. Since 1960, the total solar radiation had been in a decrease trend with a decrease rate of -4. 836 2 MJ · m^-2 . （ 10 a） ^-1, but it has begun to increase from 1999. The desert area between 45° N and 46°N is char-acterized by seldom precipitation, low latitudes and high solar radiation, so the solar radiation may be as high as 5 900 MJ · m^-2 and the potential solar radiation resources are very high.