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首页> 外文会议>Canadian Society for Civil Engineering annual conference >DESIGN WIND LOADS FOR RESIDENTIAL PHOTOVOLTAIC SYSTEMS
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DESIGN WIND LOADS FOR RESIDENTIAL PHOTOVOLTAIC SYSTEMS

机译：住宅光伏系统的设计风荷载

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Residential buildings account for 17% on Canada’s energy use and 16% of its greenhouse gasemissions. With growing worldwide concern about the impact of increasing energy use, future policies willtarget buildings as a significant potential for reduction in greenhouse gas emissions. Building-integratedrenewable energy technologies such as Photovoltaic systems can provide the basis for developing asustainable built environment. As we are still in the early stages of large-scale deployment ofPhotovoltaic systems in Canada their use is often not well-defined in building regulations. The objective ofthis project was to quantify the wind loads acting on a photovoltaic system, and its supporting structure,mounted on the roof of a residential building. The photovoltaic system was modelled as an array on a1:20 scale model building with a 45° roof slope. Six different locations of the array and two spacingheights above the roof surface, 4 cm and 8 cm in full scale, were tested in the wind tunnel for 16 windangles. It was found that configurations with the array closest to the edge of the building produced thehighest wind loads; suctions were found to increase by up to 100% when compared to the same positionon the centre section of the roof. Higher wind loads were also observed when the structure was at agreater spacing above the roof, with suctions increasing up to 100% at the 4mm model scale spacingwhen compared to 2mm spacing. Pressure coefficients obtained from the wind tunnel were compared tothose calculated using the ASCE 7-05 Minimum Design Loads for Buildings and Other Structures.. Moreresearch needs to be done to develop an updated method to estimate the design wind loads for inclusionin building codes to better reflect the wind pressures acting on photovoltaic systems on residentialstructures.
机译：住宅建筑占加拿大能源使用量的17％和其温室气体的16％ 排放。随着世界范围内对能源使用量增加的影响的日益关注，未来的政策将 将建筑物作为减少温室气体排放的重要潜力。建筑一体化 光伏系统等可再生能源技术可以为开发可再生能源提供基础。 可持续的建筑环境。由于我们仍处于大规模部署 在加拿大，光伏系统的使用通常在建筑法规中没有明确定义。目的 该项目旨在量化作用在光伏系统上的风荷载及其支撑结构， 安装在住宅建筑物的屋顶上。光伏系统建模为阵列上的阵列 1:20比例的模型建筑，屋顶坡度为45°。阵列的六个不同位置和两个间距 在风洞中测试了屋顶表面上方的高度（分别为4厘米和8厘米）的16风 角度。结果发现，阵列最接近建筑物边缘的配置产生了 最大的风荷载;与相同位置相比，吸力增加了多达100％ 在屋顶的中央部分。当结构处于高温时，还观察到较高的风荷载。 屋顶上方更大的间距，在4mm的模型刻度间距处，吸力增加高达100％ 相较于2mm的间距。比较了从风洞获得的压力系数与 那些是使用ASCE 7-05建筑物和其他结构的最小设计载荷计算得出的。.更多 需要进行研究以开发一种更新的方法来估算包含的设计风荷载 在建筑规范中更好地反映作用在住宅光伏系统上的风压 结构。

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