提出一种蛇形管道水冷式PV/T模块,并基于双热源四联供系统实验平台展开对比实验,研究不同进水温度对蛇形管道水冷式PV/T模块发电、集热以及等效热效率的影响。结果表明,进水温度与光伏组件温度成正线性相关性,与得热量成负线性相关性;水冷PV/T模块相较于对比模块光伏组件温度下降21.19~31.74 ℃、发电效率提升6.838%~11.805%;进水温度每下降5 ℃,发电效率提升2.5%~5%,集热效率提升9.28%~29.32%;在平均太阳辐照度600 W/m2、蛇形管道内水流量0.30 m3/h、环境平均温度36.3 ℃的测试条件下,20 ℃进水温度时蛇形水冷式PV/T模块的发电效率为17.90%,集热效率为65.70%,等效热效率可达112.80%。
Abstract
Serpentine pipeline water-cooled PV/T module was proposed. The comparison experiments were conducted on the experimental platform of dual-heat source quadruple power supply system, where the effect of different inlet water temperatures of the serpentine pipeline water-cooled PV/T module on the electrical and thermal efficiency can be investigated. The results show that： The inlet water temperature shows a positive linear correlation with the temperature of the photovoltaic module and a negative linear correlation with the heat gain. Compared with the comparison module, the temperature of the water-cooled PV/T module can be decreased by 21.19 ℃-31.74 ℃, and the electrical efficiency is increased by 6.838%-11.805%. For every 5 ℃ decrease in inlet water temperature, the electrical efficiency is increased by 2.5%-5%, and the thermal efficiency is increased by 9.28%-29.32%. With the average solar irradiance of 600 W/m2, serpentine pipe flow rate of 0.30 m3/h and the average ambient temperature of 36.3 ℃, the electrical efficiency of serpentine water-cooled PVT module is 17.90%, the thermal efficiency is 65.70%, and the comprehensive efficiency can reach 112.80% when the inlet water temp
关键词
太阳能 /
光电 /
热能 /
PV/T /
蛇形水冷 /
转换效率
Key words
solar energy /
photoelectricity /
thermal energy /
PV/T /
the serpentine pipeline water-cooled /
conversion efficiency
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