Advances in New and Renewable Energy >
Experimental Study on Non-Tracking Low Concentrating Heat-Pipe Evacuated Tubular Solar Collector
Received date: 2016-05-12
Revised date: 2016-06-03
Online published: 2016-08-30
Solar Energy is a clean and inexhaustible energy source, but it has disadvantages of strong dispersion, low energy density and instability. In order to obtain high energy density and stable energy supply, the problems of solar concentrator and energy storage should be solved. Using the non-tracking low concentrator and solar hot fluid tank with good 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 different relative positions between the vacuum collector tubes with heat pipes and semicircle concentrator. The heat preservation effect of the solar hot fluid tank was calculated. Moreover, the collector system was made and the solar collecting performance was tested. The experimental results showed that the best instantaneous efficiency of the system was 0.66 and the coefficient of the thermal loss was 2.53 W/(m2•°C). The system can meet the needs of people’s daily life and has good application prospects.
ZHU Yan-qing , LI Zhu-ling , LI Yu-jian , WANG Lei-lei , ZHONG Liu-wen , SHI Ji-fu , XU Gang . Experimental Study on Non-Tracking Low Concentrating Heat-Pipe Evacuated Tubular Solar Collector[J]. Advances in New and Renewable Energy, 2016 , 4(4) : 328 -333 . DOI: 10.3969/j.issn.2095-560X.2016.04.010
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