Key analysis of the precautions for installing solar power stations on the tin roof
Publish Time：2022-09-19
Sources：
At present, Tin roofs are mostly sloping roofs, and the common slopes are 10% and 5%. The roof panel is a profiled steel plate or a profiled sandwich panel, and the lower part is a purlin, which is erected on the main supporting structure such as a portal frame. In China, there are many examples of this type of roof-mounted solar power station.
For this type of roof, the photovoltaic modules can be laid parallel to the roof slope, or can be designed to be arranged at a certain inclination angle. The upper photovoltaic support can be connected to the roof load-bearing structure through different connectors and fasteners. The main forms of common Tin Roof plate roofs are: upright seam type, angle chisel type, bayonet type, open nail type, etc.
1. Tin Roof.
The roof photovoltaic power generation project belongs to the renovation project of the existing Tin Roof of the building. Therefore, the roof form of the building, the structural form of the building, the layout of the photovoltaic array and the form of the photovoltaic modules themselves, the diversity of the above conditions determines the roof. There are various forms of photovoltaic supports.
The form of the Tin Roof and the structural form of the building have a greater impact on the engineering cost of the photovoltaic support. Generally speaking, the higher the waterproof level of the roof, the more exposed the waterproof layer of the roof, the greater the live load of the roof and the better the overall structure of the building and the roof with stronger bearing capacity, the lower the engineering cost of the photovoltaic support, on the contrary, the engineering cost higher.
2. There are several important precautions in the design scheme of Tin Roof tile roof power station:
1. Clarify the form and laying method of photovoltaic modules, and the roof form of the original building.
2. Know the structural form of the original building and calculate the main structural stress components.
3. According to the roof form, structural form of the original building, the layout form of the photovoltaic array, the form of the photovoltaic module itself, the structural accounting results and possible construction measures and other conditions, give various feasible support layout plans, determine optimal arrangement.
4. The roof photovoltaic project has its particularity in construction, comprehensively consider the site construction conditions, select the appropriate construction technology, and give the precautions in construction, construction protection agent safety construction measures, etc.
Problems encountered during construction and suggestions and measures for improvement:
1. Adopt the best support scheme and inclination scheme to solve the influence of water accumulation, dust accumulation and high temperature.
When building a distributed power station, the roof Tin Roof tile slope can be used for evaluation. Tin Roof tiles are basically related to industry. Tin Roof tiles are very hot in summer, and high temperatures will have some impact on power generation efficiency.
2. The photovoltaic modules 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 the Tin Roof tile is very high after exposure, and the indoor temperature of the industrial plant itself is relatively high, which has a great impact on the power generation efficiency of the module. Adding a spraying device on the Tin Roof tile is not only conducive to the cooling of the power station, but also the cooling of the tile surface.
4. Design reasonable string wiring to reduce cable length and line loss.
1. Tin Roof.
The roof photovoltaic power generation project belongs to the renovation project of the existing Tin Roof of the building. Therefore, the roof form of the building, the structural form of the building, the layout of the photovoltaic array and the form of the photovoltaic modules themselves, the diversity of the above conditions determines the roof. There are various forms of photovoltaic supports.
The form of the Tin Roof and the structural form of the building have a greater impact on the engineering cost of the photovoltaic support. Generally speaking, the higher the waterproof level of the roof, the more exposed the waterproof layer of the roof, the greater the live load of the roof and the better the overall structure of the building and the roof with stronger bearing capacity, the lower the engineering cost of the photovoltaic support, on the contrary, the engineering cost higher.
2. There are several important precautions in the design scheme of Tin Roof tile roof power station:
1. Clarify the form and laying method of photovoltaic modules, and the roof form of the original building.
2. Know the structural form of the original building and calculate the main structural stress components.
3. According to the roof form, structural form of the original building, the layout form of the photovoltaic array, the form of the photovoltaic module itself, the structural accounting results and possible construction measures and other conditions, give various feasible support layout plans, determine optimal arrangement.
4. The roof photovoltaic project has its particularity in construction, comprehensively consider the site construction conditions, select the appropriate construction technology, and give the precautions in construction, construction protection agent safety construction measures, etc.
Problems encountered during construction and suggestions and measures for improvement:
1. Adopt the best support scheme and inclination scheme to solve the influence of water accumulation, dust accumulation and high temperature.
When building a distributed power station, the roof Tin Roof tile slope can be used for evaluation. Tin Roof tiles are basically related to industry. Tin Roof tiles are very hot in summer, and high temperatures will have some impact on power generation efficiency.
2. The photovoltaic modules 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 the Tin Roof tile is very high after exposure, and the indoor temperature of the industrial plant itself is relatively high, which has a great impact on the power generation efficiency of the module. Adding a spraying device on the Tin Roof tile is not only conducive to the cooling of the power station, but also the cooling of the tile surface.
4. Design reasonable string wiring to reduce cable length and line loss.
5. The use of string inverters can improve the utilization rate of weak light, the inverter starts at low voltage, and the comprehensive utilization hours are increased.
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