槽式太阳能聚光集热系统在不同跟踪模式下的对比  

PERFORMANCE COMPARISON OF A TROUGH SOLAR CONCENTRATION SYSTEM IN DIFFERENT TRACKING MODES

作　　者：裴刚[1] 符慧德[1] 季杰[1] 韩崇巍[1] 

机构地区：[1]中国科学技术大学热科学和能源工程系,合肥230026

出　　处：《太阳能学报》2010年第10期1324-1330,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50876098;50708105);国家高技术研究发展计划(863)项目(2007AA05Z444)

摘　　要：根据合肥地区的实测气象数据,采用数值模拟和实验分析相结合的方法,对槽式太阳能聚光集热系统在春、夏、秋、冬4个典型工况下的3种不同跟踪模式(二维跟踪、东西向跟踪和南北向跟踪)的性能进行研究和分析。结果显示:采用东西向跟踪时,系统的集热性能主要受一年四季太阳位置的变化以及太阳辐照强度的影响,夏季时系统集热效率最大,达到0.351,冬季最小,降至0.196;而采用南北向跟踪和二维跟踪时,系统的集热性能主要受太阳辐照强度的影响,其中,南北跟踪时系统效率为0.300～0.312,二维跟踪时系统效率为0.347～0.363。Base on the measured weather data, the differences of a trough solar concentration system＇ s heat collection per- formance were theoretically and experimentally analyzed according to the comparison of three kinds of tracking modes （double-dimension tracking mode, east-west oriented and south-north oriented tracking mode） in spring, summer, au- tumn and winter, respectively. And results show that the system performance in east-west oriented tracking mode is main- ly affected by position of the sun in different season and solar radiation, and the efficiency of the system reach the highest value of 0. 351 in summer and the lowest value of 0. 196 in winter; the performance of the system in south-north oriented tracking mode and double-dimension tracking mode are affected by solar radiation, the system efficiency ranges from 0.3 to 0. 312 in south-north oriented tracking mode and from 0. 347 to 0. 363 in double-dimension tracking mode.

关 键 词：槽式聚光 跟踪模式 系统集热效率 

分 类 号：TK513.1[动力工程及工程热物理—热能工程] TK515