摘要
太阳能是一种取之不尽用之不竭的清洁能源,但存在分散性强、能量密度低、不稳定等特点,因此为了得到高能量密度和稳定的能量供应,需要解决聚光和储能两大问题。针对这两个问题,本文采用非跟踪低倍聚光的集热器和保温效果良好的储热油箱,提出了一种非跟踪低倍聚光热管式真空管集热器;基于几何光学原理,模拟了热管式真空管和半圆聚光器的不同放置方式和位置的聚光效率,制作了半圆形聚光热管式真空管集热器系统,选择了合适的储热油箱并进行了保温效果的理论计算;最后对该系统进行了集热性能测试实验。实验结果表明,在半圆形聚光器的聚光下,系统的瞬时效率截距为0.66,热损系数为2.53 W/(m2·℃)。该系统完全能够满足人们的日常生活用热的需求,具有良好的应用前景。
Solar Energy is a clean and inexhaustible energy source, but it has disadvantages of strong dispersion, lowenergy density and instability. In order to obtain high energy density and stable energy supply, the problems of solarconcentrator and energy storage should be solved. Using the non-tracking low concentrator and solar hot fluid tank withgood heat preservation effect, the non-tracking low concentrating heat-pipe evacuated tubular solar collector was proposed.Based on the principle of geometrical optics, the light collecting efficiency of the system was simulated under differentrelative positions between the vacuum collector tubes with heat pipes and semicircle concentrator. The heat preservationeffect of the solar hot fluid tank was calculated. Moreover, the collector system was made and the solar collectingperformance was tested. The experimental results showed that the best instantaneous efficiency of the system was 0.66 andthe coefficient of the thermal loss was 2.53 W/(m2·°C). The system can meet the needs of people’s daily life and has goodapplication prospects.
作者
朱艳青
李注苓
李育坚
王雷雷
钟柳文
史继富
徐刚
ZHU Yan-qing;LI Zhu-ling;LI Yu-jian;WANG Lei-lei;ZHONG Liu-wen;SHI Ji-fu;XU Gang(Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China;University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《新能源进展》
2016年第4期328-333,共6页
Advances in New and Renewable Energy
基金
广东省科技计划(2014A010106018
2013A011401011)
粤港合作项目(2014B050505015)
广东省特支计划(2014TQ01N610)
广东省太阳能光热先端材料工程技术研究中心建设项目(2014B090904071)
广东省战略性新兴产业项目(2011A032304003)
广州市珠江科技新星专项(2014J2200078)
关键词
热管式真空管
集热器
低倍聚光
太阳能
vacuum collector tube with heat pipe
solar collector
low concentrating
solar energy
