该文对双面光伏垂直遮阳系统的综合能效进行实验与理论研究。首先,提出一种基于EnergyPlus的双面光伏垂直遮阳发电模型,并通过实验验证模型准确性,再结合空调和照明能耗模型,建立双面光伏垂直遮阳系统综合能效模型;然后,基于验证过的模型,采用净能源消耗（QNEC）、自消耗率（SCR）和自满足率（SSR） 3个评价指标,分析气候条件、悬伸宽度以及安装倾斜角对系统综合能效的影响。结果表明,净能源消耗随着倾斜角的增大而减小,节能率最大可达71.25%。自满足率的变化趋势与光伏发电量基本一致,自消耗率的变化趋势与净能源消耗有较高的一致性。
Abstract
In this study, the comprehensive energy efficiency of bifacial photovoltaic vertical shading system is studied experimentally and theoretically. Firstly, a bifacial photovoltaic vertical shading power generation model based on EnergyPlus is established, and the accuracy of the model is verified through experiments. Then, combined with the energy consumption of air conditioning and lighting, a comprehensive energy efficiency model of bifacial photovoltaic vertical shading system is established. Finally, based on the verified model, the impact of climate conditions, overhang width and installation tilt angle on the comprehensive energy efficiency of the system is analyzed by using three evaluation indicators： net energy consumption （QNEC）, self-consumption rate （SCR） and self-sufficiency rate （SSR）. The results show that the net energy consumption decreases with the increase of the inclination angle, and the energy saving rate can reach 71.25% at the maximum. The variation tendency of self-satisfaction rate is basically consistent with photovoltaic power generation, and the trend of self-consumption rate is highly consistent with net energy consumption.
关键词
光伏发电 /
发电量 /
能效 /
建筑光伏一体化 /
遮阳系统 /
参数优化
Key words
photovoltaic power /
power generation /
energy efficiency /
BIPV /
shading system /
parameter optimization
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基金
国家自然科学基金（51978252）; 湖南省重点研发计划（2021SK2045）
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