基于线性菲涅尔反射镜的二次反射塔式太阳集热器性能分析  

PERFORMANCE ANALYSIS OF BEAM-DOWN TOWER SOLAR COLLECTOR BASED ON LINEAR FRESNEL REFLECTOR TECHNIQUE

作　　者：赵晓凯[1] 代彦军[1] 林蒙[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《太阳能学报》2015年第8期1909-1914,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51276112)

摘　　要：提出基于线性菲涅尔反射镜的二次反射塔式太阳集热器的设计原理,设计一个由3组定日镜组成的小型塔式集热器,分析塔式集热器的光学性能,当光线垂直入射时,其光学效率可达65%。搭建基于线性菲涅尔反射镜的二次反射塔式集热系统实验台。测试结果表明,入口温度110℃时,热效率为51.6%;工质进口温度110℃时,热损失系数为38.6 W/(m^2·℃),热损失为583.4 W。The design principle of secondary reflection tower solar collector based on linear Fresnel reflector was proposed and a tower collector prototype including three heliostats was designed. The optical performance of the prototype was studied. It is found that the optical efficiency can reach up to 65% with light of normal incidence. A secondary reflection tower collector system based on linear Fresnel reflector was built. The Experimental results showed that the thermal efficiency is 51.6% at inlet temperature of 110 ℃. The heat loss coefficient and heat loss are 38.6 W/（m2 ·℃ ） and 583.4 W at 110 ℃, respectively.

关 键 词：太阳能热利用 二次反射塔式系统 菲涅尔反射镜 性能分析 

分 类 号：TK512[动力工程及工程热物理—热能工程]