该文提出一种新型一体化通风光伏屋顶。为优化该屋顶结构,建立该光伏屋顶的CFD模型,并通过实验验证模型的准确性。基于该CFD模型,探究散热通道高度H和组件间距D对光伏屋顶温度分布的影响。结果表明,增加H和D强化了光伏屋顶散热,有效提高了组件发电效率。综合考虑散热效果和结构可靠性等因素,该光伏屋顶的优化结构参数为H=50mm,D=100mm。进一步采用EnergyPlus模拟该光伏屋顶的传热特性和光伏产能特性。结果表明,在西安地区,与普通屋顶相比,新型光伏屋顶夏季得热量和冬季热损失分别降低了48.0%和27.1%,全年建筑节能潜力高达198.0 kWh/m2。
Abstract
A novel integrated ventilated photovoltaic roof was proposed in the paper. To optimize the structure of the roof, a CFD model was established and verified by experiments. With the CFD model, the effect of the heat dissipation channel height H and module spacing D on the temperature distribution of the PV roof were investigated. The results show that the increase of H and D can strengthen the heat dissipation of the PV roof and effectively improve its power generation efficiency. Considering both of the heat dissipation effect and structural reliability, the optimal H and D are calculated to be 50 mm and 100 mm respectively. Furthermore, the heat transfer and energy generation characteristics of the PV roof were simulated with EnergyPlus. Compared to the conventional roof, its heat gain in summer and heat loss in winter were reduced by 48.0% and 27.1% in Xi'an, and the annual energy saving potential was as high as 198.0 kWh/m2.
关键词
光伏 /
屋顶 /
节能 /
BAPV /
BIPV /
结构优化 /
热电性能
Key words
photovoltaic /
roof /
energy saving /
BAPV /
BIPV /
structure optimization /
thermoelectric properties
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基金
国家重点研发计划（2022YFB4201002-1）; 隆基绿能科技股份有限公司项目（装配式BIPV产品热工性能分析H202091370547）
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