摘要
介绍了固定条形镜面太阳能聚光集热器的工作原理,其系统设计须计算聚光装置的各个倾斜镜面太阳直射辐射。固定条形镜面反射聚光是对圆柱面聚光镜的离散化近似,聚光装置中各单元反射镜面入射角、采光面积时刻变化,使系统太阳辐射计算变得复杂。利用矢量分析方法得到了固定条形镜面任一镜元入射角计算公式、采光面积及几何聚光比,计算了镜场的实时辐射通量,最后得到整个系统在工作时间段的累积辐照量。对南向倾斜纬度角安装和年调整一次倾斜角度(春季和夏季使用)安装的两种聚光器进行了比较,其中年调整一次倾角、开口宽度为1800mm的聚光系统单位长度年接收辐照量提高了6.53%,增量为65.78GJ/m。
The fixed linear mirror solar concentrator and its working principle are introduced. It is necessary to culate solar beam radiation on each of tilted mirror for the design of solar collector system. Fixed mirror solar concentrator （FMSC） is an approximation which treats smooth linear optical reflector as broken into segments. The incidence angle and illuminate area of every mirror consequentially vary throughout the year, which makes the calculation of the beam radiation relatively complex. The equation of incidence angle, illuminate area and geometric concentration ratio are obtained by vector analysis. And the instantaneous solar beam radiation of whole mirror field is computed. Finally, the cumulated irradiation of overall system is obtained during the available work. Furthermore, two kinds of concentrator are compared, including installation on the south facing with slope of latitude angle and adjustment of a tilt angle one year （spring and summer use）. Adjusting slope angle once a year, radiation from concentrator system with open width of 1800 mm increases by 6.53 %, with an increment of 65.78 GJ/m.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第10期68-74,共7页
Acta Optica Sinica
基金
山东大学"985工程"自主创新基金(2011JC002)
关键词
几何光学
固定条形镜面聚光器
矢量法
太阳能
辐照量
geometrical optics
fixed mirror solar concentrator
vector method
solar energy
irradiation
