利用具有等温蓄放热过程的相变材料（PCM）为介质,调控太阳能光电转换过程中太阳电池的温度变化,实验对比PV-PCM系统和PV/T-PCM系统在不同太阳辐照度工况下的能量转换性能。结果表明,在PV-PCM系统中,相变材料可有效减缓光伏组件的温度上升,但在长期实验条件下,PV-PCM系统可能过热;PV/T-PCM系统的综合能量转换效率和㶲效率平均为53.8%和14.45%,PV-PCM系统综合能量转换效率和㶲效率平均为20.96%和11.7%,单独PV系统能量转换效率平均为8.89%。结果表明,采用PV-PCM系统和PV/T-PCM系统可显著改善光伏组件的能量转换性能。
Abstract
Phase change materials （PCM） with isothermal heat storage and release process are used as the medium to regulate the temperature change of solar cells during the solar photovoltaic conversion process. The energy conversion performance of the PV-PCM system and the PV/T-PCM system under different solar radiation conditions was compared experimentally. The results show that PCMs can effectively slow down the temperature rise of photovoltaic modules in the PV-PCM system, but the PV-PCM system is prone to overheating under long-term experimental conditions. The combined energy conversion efficiency and energy efficiency of the PV/T-PCM system in the experiments averaged 53.8% and 14.45%, the combined energy conversion efficiency and energy efficiency of the PV-PCM system averaged 20.96% and 11.7%, and the energy conversion efficiency of the PV alone system averaged 8.89%. The results show that the use of PV-PCM and PV/T-PCM systems can significantly improve the energy performance of photovoltaic modules.
关键词
太阳能 /
相变材料 /
能量转换效率 /
? /
光伏
Key words
solar energy /
phase change materials /
energy conversion efficiency /
exergy /
PV/T system
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基金
国家自然科学基金（52078053; 52208094）; 湖南省科技创新领军人才项目（2023RC1057）; 光伏-相变-水蓄热式系统的传热及节能效果研究（CSLGCX23081）
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