无盖板PV/T组件相比于盖板式PV/T组件有更高的光电转换效率,在电能输出方面的优势明显。基于此,提出一种无盖板型水冷式PV/T模块,并搭建由光伏对比模块、水冷式PV/T模块以及无冷却水循环的PV/T对比模块构成的实验平台开展对比实验,研究温度、流量对无盖板PV/T模块电、热转换效率的影响。结果表明,在水冷作用下,PV/T模块的光伏组件温度显著降低,与PV/T对比模块相比发电效率提升11.54%;环境平均温度为21.7 ℃、平均辐照度650 W/m2的测试条件下,流量0.12 m3/h时模块的电效率为17.44%,热效率为19.80%,综合效率达到65.69%,考虑到循环泵消耗的电能,表面积1.93 m2的水冷式PV/T模块全天可存储有效能3.72 MJ。
Abstract
Compared with the glazed PV/T system, the unglazed PV/T system has higher photoelectric conversion efficiency and obvious advantages in power output. Based on this, the water-cooled PV/T module without glass cover was proposed. The experimental platform which is consists of PV comparison module, water-cooled PV/T module, PV/T comparison module without cooling water was built to carry out comparison experiments, in which the effects of temperature and flow rate on the electrical and thermal conversion efficiency were researched. The results show that： under the action of water cooling, the temperature of the photovoltaic panel of the PV/T module is significantly reduced, and the power generation efficiency is increased by 11.54% compared with the PV/T comparison module; the average ambient temperature is 21.7 ℃ and the average irradiance is 650 W/m2. Under the conditions, when the flow rate is 0.12 m3/h, the electrical efficiency of the module is 17.44%, the thermal efficiency is 19.80%, and the overall efficiency reaches 65.69%. Taking into account the electric energy consumed by the circulating pump, the water-cooled PV/T module with a surface area of 1.93 m2 can store effective energy 3.72 MJ in one day.
关键词
太阳能 /
光电 /
转换效率 /
热能 /
PV/T
Key words
solar energy /
photoelectricity /
conversion efficiency /
thermal energy /
PV/T
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基金
安徽高校协同创新项目（GXXT—2019—019）; 中国科协优秀中外青年交流计划（2019年度）; 国家级大学生创新训练项目（201710878044）
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