基于塞贝克效应的光伏幕墙的节能研究

Energy Savings Study of Photovolt Curtain Walls Based on the Seebeck Effect

随着我国建筑业的不断发展以及能源结构的不断调整,利用新能源的光伏幕墙在节能减排中已初见成效,但光伏系统工作时,仍存在光伏电板的背板温度上升而影响其工作效率,进而导致能耗增加的问题。因此,提出了一种新型的节能环保的空气腔结构型光伏幕墙,一方面研究墙体外表面与光伏背板间的空气腔多种宽度下对散热效率的影响关系;另一方面利用塞贝克效应原理,研究光伏板背部铜-康铜热电偶热电转换装置吸收热量与光伏板工作效率的关系。最终通过对实验所测数据的分析,得出基于塞贝克效应的光伏建筑墙体的散热效率随空气腔宽度增加而增大,热电偶对光伏背板热量的利用可以促进提高光伏板工作效率。

With the continuous development of China’s construction industry and the continuous adjustment of energy structure,the photovoltaic curtain wall using new energy has achieved initial results in energy conservation and emission reduction,but when the photovoltaic system works,there is still a rise in the temperature of the back plate of the photovoltaic panel and affect its work efficiency,which in turn leads to the problem of increased energy consumption.Therefore,it proposes a new type of energy-saving and environmentally friendly air-cavity structure photovoltaic curtain wall,on the one hand,to study the influence of the external surface of the wall and the air cavity between the photovoltaic backsheet on the heat dissipation efficiency.On the other hand,the principle of Seebeck effect is used to study the relationship between heat absorption and the efficiency of photovoltaic panels by the copper-constantan thermocouple thermoelectric conversion device on the back of photovoltaic panels.Finally,through the analysis of the experimental data,it is concluded that the heat dissipation efficiency of the photovoltaic building wall based on the Seebeck effect increases with the increase of the width of the air cavity,and the utilization of the heat of the photovoltaic backsheet by thermocouples can promote the improvement of the efficiency of the photovoltaic panel.