基于腔体的双轴槽式系统集热特性动态测试  

DYNAMIC TEST OF COLLECTING CHARACTERISTICS OF A TWO-AXIS TROUGH SYSTEM BASED ON CAVITY

作　　者：王志敏[1,2] 田瑞[1,2] 韩晓飞 赵科 齐井超 Wang Zhimin1,2, Tian Rui1,2, Han Xiaofei1, Zhao Ke1, Qi Jingchao1(1.College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; 2. Inner Mongolia Renewable Energy Key Laboratories, Hohhot 010051, Chin)

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]风能太阳能利用技术教育部重点实验室,呼和浩特010051

出　　处：《太阳能学报》2018年第3期737-743,共7页Acta Energiae Solaris Sinica

基　　金：内蒙古自治区重大基础研究开放课题(2017);内蒙古自治区科技创新引导奖励基金(2017)

摘　　要：以倒梯形腔体接收器为集热器的双轴槽式太阳能聚光集热系统为研究对象，通过实验测试和归一化温差的方法，对该系统不同接收位置下的集热性能以及不同流量工况下的瞬时集热效率进行测试，研究结果表明：腔体接收器放置在不同接收位置会表现出不同的光热转换性能，不同流量下对应的最佳接收位置不同；通过归一化方法处理可得到600、700、800、900L／h4种流量工况下对应最大集热效率以及热损失系数，并通过多项式拟合得出热损失系数与流量的变化关系式为y=139．06-0．29x＋0．0002x2，可用来指导工程实际应用。The double- axis trough solar concentrating heat collecting system with the inverted trapezoidal cavity receiver is researched, by the experimental test and normalized temperature difference method, the collector performance under different receiving positions of the system and the instantaneous collector efficiency under different flow rate are tested.The results show that light and heat transfer performance of system is different in different receiving positions, and the optimal receiving position is different under different flow rates; by normalizing the experimental data, the maximum heat collection efficiency and heat loss coefficient of 600, 700, 800, 900 L/h are obtained, and the relationship between the heat loss coefficient and the flow rate is obtained by polynomial fitting, y=139.06-0.29x＋ 0.0002x2, which can be used to guide the practical application.

关 键 词：太阳能 聚光装置 集热特性 腔体 流量 动态测试 

分 类 号：TK513.3[动力工程及工程热物理—热能工程]