一种采用腔体吸收器的线性菲涅尔太阳集热器性能分析与优化  

PERFORMANCE STUDY AND OPTIMIZATION OF A LINEAR FRESNEL REFLECTOR SOLAR COLLECTOR WITH CAVITY RECEIVER

作　　者：周凌宇 代彦军[1] 李显[1] 王如竹[1] Zhou Lingyu, Dai Yanjun, Li Xian, Wang Ruzhu(School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, Chin)

机构地区：[1]上海交通大学机械与动力工程学院

出　　处：《太阳能学报》2018年第3期704-712,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51276112)

摘　　要：通过理论与实验的方法，对一种采用方形腔体吸收器的线性菲涅尔太阳集热器的集热性能进行研究，分析影响菲涅尔集热器光学性能和集热性能的影响因素，通过Matlab编程模拟集热器的集热性能，并由实验测试进行验证。该集热器的光学效率为78．6％，最高集热温度为180oC，在集热温度80～150℃的范围内，集热效率从52．3％变化到36．2％，热损系数从9．5W／（m2·K）升至22．8W／（m2·K）。与此同时，通过TracePro软件模拟，对集热器的设计结构进行优化分析。研究表明：该菲涅尔太阳集热器具有良好的集热性能，在适宜的天气条件下运行稳定可靠，且具有易搭建、维护简单和技术经济性好的特点，在中温太阳能的热利用领域具有良好的应用前景。A linear Fresnel reflector solar collector was investigated both theoretically and experimentally in this paper. The factors which influenced the optical and thermal efficiency of the solar collector were analyzed. The Matlab software was utilized to simulate the performance of the solar collector and the experiments were set up to validate the results. For the LFR solar collector, the pure optical efficiency is 78.0% and the highest temperature is 180 ℃. Form 80 ℃ to 150 ℃, the thermal efficiency varied from 52.3% to 36.2%, and overall heat loss coefficient varied from 9.5 W/（m2. K） to 22.8 W/（m2 K）. Meanwhile, the TracePro software was utilized to optimize the geometric structure of the solar collector. The research showed that the solar collector has a quite good performance. It＇ s operating very steadily andreliably under the typical fine weather condition. It＇ s easy to build, simple to maintain and advantageous both in technology and economy. It will be a fine prospect for the mid-temperature solar energy comprehensive utilization.

关 键 词：太阳能 线性菲涅尔 腔体吸收器 性能分析 优化 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]