| 童维维,方浩,马进伟,方廷勇,何伟.太阳能光电光热综合利用模块数值模拟[J].安徽建筑大学学报,2019,27(): |
| 太阳能光电光热综合利用模块数值模拟 |
| Numerical simulation of solar photovoltaic photothermal comprehensive utilization module |
| 投稿时间：2019-01-22 修订日期：2020-03-14 |
| DOI： |
| 中文关键词: 光电光热 空气集热 水集热 集热效率 节能 |
| 英文关键词: photovoltaic photothermal air collector water collector thermal efficiency energy efficiency |
| 基金项目:国家十三五项目(2017YFC0702600)；国家自然科学基金(51606002)；安徽省自然科学基金(1608085QE108) |
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| 中文摘要: |
| 摘要：设计并研究一种光电光热（PV/T）集热模块，可实现集热水、集热空气、输出电能的多重功能。利用CFD对模型进行数值模拟，分析空气流道尺寸、空气流量大小及入口水流速对集热性能的影响，计算PV面板的理论发电量及效率。结果显示：光电—空气集热模式下，0.025 m空气流道高度所对应的集热效率最佳，出口空气温度最大可提高近50 ℃，平均节能效率达到62.08%；光电—水集热模式下，随着入口水流速度的加快，出口水温逐渐降低，但系统集热效率呈现增加趋势，进口水流速度为0.10m/s时热性能值最佳，经过循环可将水箱中水温提高近15 ℃，节能效率为33.52 %。设计的PV面板年发电量202.9 kw·h，相当于节约标准煤62.9 kg，光电转换效率达到14.79 %。 |
| 英文摘要: |
| Abstract：A photovoltaic photothermal (PV/T) collector module was designed and researched, which can realize multiple functions of generating hot water, generating hot air and outputting electric energy. The collector was analyzed including the effect of air flow path size, air flow rate, inlet water flow rate on heat collection performance and calculation of the theoretical power generation and efficiency of PV cells by CFD. The results showe：in photoelectric-air collecting mode, the air flow channel height was 0.025 m when the heat collecting efficiency is optimal, the outlet air temperature could be increased by up to 50 ℃, and the energy saving efficiency reached to 62.08%. In photoelectric-water collecting mode, outlet water temperature gradually decreased, but the system thermal efficiency shows an increasing trend with the inlet water flow speed constantly increasing. The thermal performance value was the best when the inlet water flow rate was 0.10 m/s.The temperature in the water tank could be increased by 15 ℃, saving electric energy 2.1 kw·h, and the energy saving efficiency reached to 33.52 % after the cycle. The designed PV panel could generate electricity 202.9 kw·h, which is equivalent to saving 62.9 kg raw coal and photoelectric conversion efficiency reach to 14.79 %. |
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