空间太阳能CPC的聚光特性与改进方案  

CONCENTRATING CHARACTERISTIC AND IMPROVED SCHEME ANALYSIS FOR SPACE SOLAR COLLECTOR

作　　者：孙创[1] 夏新林[1] 谭小琴[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《太阳能学报》2009年第7期895-899,共5页Acta Energiae Solaris Sinica

基　　金：教育部"新世纪优秀人才支持计划"(No.NCET-04-0335);国家高技术研究发展计划(863)项目(No.2007AA0172)

摘　　要：对平面吸收体型CPC结构,推导了截取比的合理取值范围,结合卫星的轨道特性,采用蒙特卡洛法模拟分析了平面吸收体型CPC内的光传播特性。针对空间CPC对日跟踪技术的难点,提出了间歇跟踪的控制方法,导出了跟踪方向的间歇调整计算公式。以太阳同步圆轨道卫星的CPC应用为例,进行了聚光特性的数值模拟,探讨了平面吸收体型CPC的光线损失机理,提出了性能理想的封闭式改进方案。The solar concentrating system composed of compound parabolic concentrator （CPC） will be a tendency for space sun-generated electric power in future. The reasonable truncation was obtained for CPC with plain absorber. Based on the characteristic of orbit, the path of light transport for CPC was simulated by Monte Carlo Method. The space CPC with intermittent tracking may low the difficulty of anti-solar orientated, and the control formula of intermittent tracking was dominated. Taking some CPC with plain absorber on sun-synchronous orbit for example, the concentrating characteristic of solar array depending on intermittent tracking was expounded. Finally, the loss of light in two dimensional CPC was analyzed and an improved scheme was presented, which has an ideal concentrating performance.

关 键 词：太阳能聚集 复合抛物面聚光器 间歇跟踪 蒙特卡洛法 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]