论文部分内容阅读
槽式太阳能集热器集热管下方呈现一条中央为暗黑条纹的高亮光带,该光带是其主要光学特征。在研究集热器光带形成机理的基础上,经过理论推导得出,该高亮光带的弧长特性与抛物面聚光器的开口宽度、抛物面聚光器的焦距以及集热管的直径相关,这三个参数对光带弧长的影响各不相同。光带中央暗黑条纹的弧长也与以上三个参数相关。优化分析后认为,抛物面焦距与集热管直径的比值应远离12.5。
Trough solar collector tube below the heat pipe shows a dark stripes of high brightness band, the light is the main optical characteristics. Based on the study of the formation mechanism of the light band of the collector, the arc length characteristic of the high brightness band is deduced from the theory, which is related to the opening width of the parabolic condenser, the focal length of the parabolic condenser and the diameter of the collector tube. The three parameters have different effects on the light arc length. The arc length of the dark band in the center of the light band is also related to the above three parameters. Optimized analysis that the ratio of the focal length of the parabola and collector diameter should be away from 12.5.