介绍并比较了几种太阳能利用中广泛应用的太阳位置算法,并总结在具体应用中其主要变量日子数的具体算法,不同的太阳位置算法使用合适的日子数算法能提高计算结果的精度。计算结果表明,使用正确的日子数算法,其算法精度至少可提高30%,若将Bourges的赤纬角算法与Lamm的时差算法相结合,其太阳高度角、方位角计算误差均在0.02°以内。 This paper introduces and compares several solar location algorithms widely used in solar energy utilization and summarizes the specific algorithms of the days of major variables in specific applications. Different solar location algorithms can improve the accuracy of the calculation results by using the appropriate day number algorithm. The results show that the accuracy of the algorithm can be improved by at least 30% using the correct day number algorithm. If the Bourges’ declination angle algorithm and Lamm’s time difference algorithm are combined, the calculation errors of the solar elevation angle and azimuth angle are within 0.02 ° .