反射式线性菲涅尔集热器性能的实验研究与模拟分析  

EXPERIMENTAL AND SIMULATION ANALYSIS OF THERMAL PERFORMACE OF A LINEAR FRESNEL REFLECTING CONCENTRATOR

作　　者：吕明新[1,2] 宋固[2] 董震[2] 赖艳华[2] 杨昭[1] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]山东大学能源与动力工程学院,济南250061

出　　处：《太阳能学报》2015年第2期440-446,共7页Acta Energiae Solaris Sinica

基　　金：山东大学自主创新基金(2012ZD018);济南市高校自主创新计划(201202090)

摘　　要：采用热网络法建立菲涅尔集热系统CPC腔式接收器的数值传热模型,搭建集热器系统,实验研究集热器效率、CPC腔的集热性能。利用数值传热模型分析太阳辐照度、镜场宽度、工质入口温度和质量流量的变化对系统出口温度和效率的影响,以期为菲涅尔集热器出口参数的控制提供依据。实验数据验证了模型的有效性,模拟结果显示,质量流量对工质出口参数影响最大;镜场宽度和辐照度对集热效率的影响最为显著;菲涅尔集热器的热效率可达68%。The numerical heat transfer model and system of linear Fresnel reflector with CPC cavity receiver were set up using thermal network method. The model was used to analyze the influence of solar radiation, mirror array width, inlet temperature and mass flow rate on the outlet temperature and efficiency of the system, in order to provide basis for controlling outlet parameters. The simulation and experiment comparisons show that the model agrees with the experimental results well. The analyses indicate that the thermal efficiency of LFR system can approach to 68%, which means that the LFR system will have ~reat potential in medium-high temperature area of solar thermal utilization.

关 键 词：太阳能 线性菲涅尔集热器 CPC腔式接收器 数值模拟 热效率 

分 类 号：TK519[动力工程及工程热物理—热能工程]