How to choose photovoltaic stents The solar photovoltaic stent systems commonly used in our country are divided into materials, mainly including concrete stents, steel stents and aluminum alloy stents.
1. Concrete supports are mainly used in large-scale photovoltaic power stations. Because of their self-weight, they can only be placed in the field and in areas with good foundations. However, they have high stability and can support huge-sized solar panels.
2. The performance of the steel bracket is stable, the manufacturing process is mature, the carrying capacity is high, the installation is simple, the anti-corrosion performance is excellent, the appearance is unique and the connection design is beautiful, the installation is convenient and fast, and the installation tools are simple and universal. The life span is more than 20 years.
3. Aluminum alloy brackets are generally used in solar energy applications on the roof of civil buildings. Aluminum alloy has the characteristics of corrosion resistance, light weight, beautiful appearance and durability, but its low bearing capacity cannot be applied to solar power station projects.
Fourth, comprehensive performance comparison
(1) Aluminum alloy profiles are light in weight, beautiful in appearance, and have better corrosion resistance. They are generally used in roof power stations with load-bearing requirements, strong corrosive environments, and chemical plant power stations. Aluminum alloy supports will have better results.
(2) The steel has high strength and small deflection and deformation when under load. It is generally used for power stations under ordinary conditions or for parts with relatively large forces.
(3) Cost: Under normal circumstances, the basic wind pressure is 0.6kN/m2, the span is less than 2m, and the cost of the aluminum alloy bracket is 1.3-1.5 times that of the steel structure bracket. In the small-span system, the cost difference between aluminum alloy bracket and steel structure bracket (such as color steel plate roof) is relatively small, and aluminum alloy is much lighter than steel bracket in terms of weight, so it is very suitable for roof power stations. In windy areas, where the span is relatively large, the use of steel supports has obvious economic benefits.
