基于太阳能聚光集热系统的几何对称特性，提出一种运动累加方法来计算吸热器的能流密度分布。采用光线跟踪方法，推导了吸热器表面能流分布的运动累加数学模型，此模型可以将光线跟踪过程转换为旋转运动或平移运动，避免大量求解光线与吸热器曲面的联立方程组。在Visual C++平台编制运动累加程序，计算了典型的碟式和槽式系统配置不同吸热器的能流密度分布，并与文献对比验证了该方法的正确性。结果表明，在碟式—腔式吸热器中，跟踪光线6.10×108根需112 s，在结果符合的情况下可跟踪光线9.648×107根，这样仅需16 s。运动累加方法的计算过程较简单，且具有一定的计算效率，可以为对称特征的聚光集热系统参数协同优化提供一定参考。

Based on the characteristics of geometric symmetry of the concentrating solar collector system, a moving accumulative method is put forward, which is used to compute the solar flux distribution of the absorber. Using the ray tracing method to deduce the moving accumulative mathematical model of the absorber flux distribution, the model can effectively convert the ray tracing process into rotary or rectilinear motion. Therefore, the numerous equations of rays and absorber calculation are avoided. The moving accumulative programs are compiled and the absorber solar flux distributions of the dish system and parabolic trough system are calculated by Visual C++ software. Then the results are compared with references, which validate the correctness of the moving accumulative mathematical model. The result shows that, in dish system with cavity receiver, calculation of 6.10×108 rays need 112 s, but calculation of 9.648×107 rays just need 16 s and calculated results are basically consistent. The moving accumulative method calculation process is relatively simple and the computational efficiency is improved, which can provide reference to collaborative optimization for the symmetry solar concentration and collector system.