What Should Be Paid Attention To When Installing PV System On Metal Roofs?

At present, most metal roofs (color steel tiles) are slope roofs, with common slopes of 10% and 5%. The roof panel is a corrugated steel plate or a corrugated sandwich panel, and the lower part is a purlin. This is set on the main supporting structure such as a portal frame. There are many examples of photovoltaic power stations installed on this type of roof. For this type of roof, we can lay the photovoltaic modules parallel to the roof slope. Also we can design them to arrange at a certain angle.We can connect the upper solar bracket to the roof load-bearing structure through different connectors and fasteners. The main forms of common color steel plate roofs are: upright lock edge type, corner type, bayonet type, exposed nail type, etc. So how to paid attention to when installing metal roof PV system? This article will give you the answers:

The roof photovoltaic power generation project belongs to the renovation project of the metal roof of an existing building. Therefore, the roof form of the building, the structural form of the building, the layout form of the photovoltaic array and the form of the photovoltaic module itself. The diversity of the above conditions determines the variety of forms of the roof solar bracket.
The form of the metal roof and the structural form of the building have a great influence on the engineering cost of the photovoltaic bracket. Generally speaking, the higher the waterproof grade of the roof, the less exposed the roof waterproof layer, the greater the live load of the roof, and the better the overall structure of the building and the stronger the bearing capacity of the roof, the lower the engineering cost of the photovoltaic bracket, and vice versa.

1. Clarify the form and laying method of the solar components, and the roof form of the original building.
2. Clarify the structural form of the original building and calculate the main structural force-bearing components.
3. According to the roof form, structural form, layout form of the photovoltaic array, the form of the solar components themselves, structural calculation results and possible construction measures of the original building. We should give various feasible bracket layout plans to determine the optimal layout method.
4. The roof photovoltaic project has its own particularity in construction. Comprehensively consider the on-site construction conditions, select the appropriate construction process. And give precautions in construction, construction protection agent safety construction measures, etc.

1. Use appropriate support schemes and inclination schemes to solve the impact of water accumulation, dust accumulation and high temperature.
   When building distributed power stations, we can use the slope of the roof color steel tiles can be used for evaluation. Color steel tiles are basically related to industry. The temperature of color steel tiles is very high in summer. And high temperature will have some impact on power generation efficiency.
2. The solar components are arranged horizontally to reduce the shadow area and increase the effective utilization area, thereby increasing the power generation efficiency.
3. In summer, the temperature of color steel tiles is very high after exposure to the sun. And the indoor temperature of the industrial plant itself is relatively high. This has a great impact on the power generation efficiency of the components. Adding a spraying device on the color steel tiles is beneficial to the cooling of the power station and the cooling of the tile surface.
4. Design a reasonable string routing to reduce cable length and line loss.
5. Use string inverters to improve the utilization rate of weak light. The inverter starts at low voltage, and the comprehensive utilization hours are increased.

How to paid attention to when installing metal roof PV system? Above all are the answers. If you are interested in knowing more or share insights with us, please feel free to contact!