中文摘要：

基于对太阳辐射[火用]的分析，理论计算了外层空间太阳集热器的完善性系数和[火用]转化效率，并分别以获得最大完善性系数和最大[火用]转化效率为条件，给出集热器最佳工作温度所满足的方程。讨论了两种具体太阳集热器的最佳工作温度，给出了由两种方法确定的最佳工作温度随环境温度变化的关系曲线，比较了它们之间的相对大小，对影响最佳工作温度的因素进行了分析。

英文摘要：

Based on the exergy analysis of solar radiation, the exergy transformation efficiency and perfectness coefficient of outer space solar collector were studied. On the condition of achieving the maximum exergy transformation efficiency and perfectness doegicient, separately, the optimal operation temperatures of two sorts of solar collectors were discussed. The rehtionship curves of the optimal＇operation temperature with environment temperature, which were determined by two types of methods, were shown and their relative magnitudes were compared. The factors that influence the optimal operation temperature were discussed in the paper.