塔式电站吸热器开口处热功率的计算  

Thermal Power Calculation of Heat Receiver Aperture in Solar Power Tower Plant

作　　者：张宏丽[1] 王树群[2] 王存旭[1] 赵琰[1] 

机构地区：[1]沈阳工程学院新能源学院,辽宁沈阳110136 [2]沈阳工程学院能源与动力学院,辽宁沈阳110136

出　　处：《沈阳工程学院学报（自然科学版）》2016年第1期6-10,共5页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：针对塔式太阳能热发电系统中太阳能自定日镜反射至吸热器开口处的能量利用情况,通过数值模拟,对北纬40°设计条件下吸热器开口处的热功率进行计算,并对其影响因素进行了分析。研究结果表明,可通过最近一排定日镜和当地定日镜利用效率大小来限定定日镜场的布置范围,并对定日镜进行合理地摆放,以更有效地聚集太阳辐射能。吸热器开口处所能获得热功率大小与接收塔光学高度、吸热器开口倾斜角度以及吸热器开口尺寸等因素有关,其中,吸热器开口尺寸对于吸热器开口处热功率的影响最大。在当地太阳辐射资源一定的情况下,要想在吸热器开口处获得较大热功率,需优先考虑增大吸热器开口尺寸,同时优化选取其他参数。Based on the solar energy flowfrom the heliostats to the receiver aperture in the solar tower power system,the thermal power received at the receiver aperture and its affecting factors was inverstigated by numerical simulation. The results showed that the local land efficiency and the first rowof the heliostats could be used to confine the domain of the heliostat field,furthermore,the heliostats needed to be placed in reasonable postions,so as to collect more solar energy. The thermal power received at the receiver aperture depended mainly on the height of the tower,the tilted angle and size of the receiver aperture,etc.,and the size of the receiver aperture had the greatest impact. As a result,it was preferred when larger power was expected at the receiver aperture.

关 键 词：太阳能 定日镜 接收塔 吸热器 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]