EFFECT OF POROUS VERMICULITE MOISTURE EVAPORATION COOLING ON POWER GENERATION PERFORMANCE OF PHOTOVOLTAIC PANELS

被引：0
|
作者：
Liu X. [1 ]
Ran M. [1 ,2 ]
机构：
[1] School of Architecture, Huaqiao University, Xiamen
[2] Xiamen Key Laboratory of Ecological Building Construction, Xiamen
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 08期
关键词：
calcium chloride; evaporative cooling; moisture adsorption and desorption; photovoltaic power generation; porous materials;
D O I：
10.19912/j.0254-0096.tynxb.2022-0627
中图分类号：
学科分类号：
摘要：
To further improve the cooling power generation performance of photovoltaic panels, the porous vermiculite was selected as carriers of CaCl2 salt and water, and the effects of three cooling methods namely moisture absorption/desorption, water storage evaporation, intermittent spray, on the upper and lower surface temperatures and power generation performance of photovoltaic panels were investigated in this paper. It is found that porous vermiculite carried CaCl2 salt can increase photovoltaic power generation, but its cooling effect is limited due to lower evaporation moisture content and large thermal resistance for heat dissipation of photovoltaic panel back. The water storage evaporation of porous vermiculite can effectively reduce the temperature of photovoltaic panels; once water storage in a day can meet the water evaporation demand for a day; the power generation efficiency can increase by 2.5% compared with that of photovoltaic panels without cooling. The combination of intermittent spray and water storage in porous vermiculite can further increase the power generation efficiency up to 8.2%, compared with the evaporation cooling of water storage in porous vermiculite. © 2023 Science Press. All rights reserved.
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页码：307 / 315
页数：8
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