BIPV模式在工业厂房屋顶的应用研究

RESEARCH AND APPLICATION OF BIPV MODEL IN INDUSTRIAL PLANT ROOFS

中国大力推进分布式光伏发电的同时,存在许多工业厂房屋顶无法满足光伏发电系统安装条件的问题,这极大制约了光伏发电技术的推广。由于传统的光伏发电系统是直接附着在建筑物屋顶,即采用的是BAPV模式,这会导致因需增加建筑物的承载力而增加建设成本的情况出现,从而制约了分布式光伏发电的应用,而将光伏发电系统与建筑集成的光伏建筑一体化(BIPV)模式可有效解决此类问题。针对BIPV模式和BAPV模式对工业厂房钢结构的影响进行了研究,并根据实际案例对这两种模式下的光伏发电系统建设、维护成本进行了分析。研究结果表明:1)BIPV模式相较于BAPV模式可以减少工业厂房钢结构屋顶恒荷载,对于轻微超限的项目可以省去加固成本,对于超限明显的项目可以减少加固成本。2)在同等建设条件下,BIPV模式相较于BAPV模式可以减少屋顶建设成本;并且从中长期来看,相较于BAPV模式,BIPV模式平均1万m^(2)的厂房可以减少126万建设维护成本。

While the country vigorously promotes distributed PV power generation,there are many industrial plant roofs that cannot meet the installation requirements of PV power generation systems,which greatly restricts the promotion of PV power generation technology.Due to the traditional PV power generation system being directly attached to the roof of buildings,which adopts the BAPV mode,it will lead to situation where construction costs increase due to the need to increase the bearing capacity of buildings,thereby restricting the development of distributed PV power generation.The PV building integration(BIPV)mode that integrates PV power generation systems with buildings can effectively solve such problems.This paper studies the impact of BIPV and BAPV modes on the steel structure of industrial buildings,and analyzes the construction and maintenance costs of PV power generation systems under these two modes based on actual cases.The research results show that:1)Compared with BAPV mode,BIPV mode can reduce the constant load on the steel structure roof of industrial buildings,for projects with slight exceeding the limit,reinforcement costs can be cancelled,and for projects with obvious exceeding the limit,reinforcement costs can be reduced.2)Under the same construction conditions,the BIPV model can reduce roof construction costs compared to the BAPV model;And in the medium to long term,compared to the BAPV model,the BIPV model can reduce construction and maintenance costs by an average of 1.26 million yuan per ten thousand square meter of industrial plant.