定日镜及其成本分析

Solar Heliostat and Its Cost Analysis

定日镜是塔式太阳能热发电系统中最基本的聚光单元,也是系统中花费成本最大的部分,占整个电站成本的40%~50%。介绍了定日镜的主要组成部分及其在定日镜总成本中所占的比例,以及定日镜尺寸和规模与定日镜成本之间的关系,由此探讨了降低定日镜成本的主要途径,为降低塔式太阳能热发电系统的发电成本,使其更好地替代化石燃料提供了思路。

Heliostats are the main elements of the collector subsystem,which represent 40% to 50% of the capital cost of a solar power tower plant,so they must be relatively lowcost,in order for the cost of solar pow-er tower plant can compete with that of the fossil fuels. Therefore,the major components of the heliostat and their costs,the relationship between the size of the heliostats,the scale of heliostats manufacturing and the cost of heliostats as well,are all discussed in this paper,as a result,ways to reduce the total costs of heliostatsare analyzed.