Photovoltaic system mounting bracket firstly needs to ensure that it is suitable for the installation occasion, as far as possible with the installation environment organic integration, in order to ensure that the installation of solid, reliable, stable at the same time, as far as possible beautiful.

First, the applicability of PV system requirements

PV system can be installed in a variety of occasions, different occasions and environments, and even the same type of mounting system, according to the different roof structure, the surrounding environment, meteorological information, etc. will require the use of different mounting structure, therefore, the need to install the site of the site for a detailed site investigation in order to design the use of the PV system with the most compatible structural form.

Strength, stiffness, stability and reliability requirements of PV system

The structural design should meet the requirements of strength, stiffness and stability, and the design service life should not be less than 25 years. Reliability directly affects the system's power generation and thus investment returns, while the 25-year service life of the system reliability puts forward high requirements, which requires the system in harsh climates such as storms, snowstorms and even earthquakes, floods and other natural disasters can still be stable and reliable operation. At the same time to avoid problems such as premature aging of materials and serious corrosion.

Strength, rigidity and stability of the installation structure needs to be designed according to the most unfavorable situation in the combination of load effects (self-weight, wind load, snow load, maintenance load and other combinations).

Third, the PV system's power generation guarantee and economic requirements

In the design of photovoltaic systems, the module installation inclination and spacing are two very important parameters that directly affect the system's power generation. Installation tilt angle and azimuth angle are generally determined by the latitude of the location and the characteristics of the installation occasion. Installation tilt angle and spacing generally follow the principle of designing in the winter solstice 9:00~15:00 components are not blocked.

In the actual engineering design using professional software for different tilt angle of the system power generation, system costs, floor space (land costs) for a comprehensive economic assessment in order to obtain the best return to determine the best installation tilt angle.

Building safety requirements of PV system

The PV system installed on the roof of the building needs to pay attention to the following issues during the design and construction process:

1. The bearing capacity of the building needs to be calculated to confirm whether it can be installed or needs to be reinforced before installation;

2. The destruction of the original waterproof layer of the roof should be avoided, such as the destruction of the waterproofing treatment needs to be re-conducted, to ensure that there is no leakage, and the design should prioritize the use of the form of the roof is not damaged; 

3. The PV array should be installed at the same time to avoid the damage of the original waterproof layer. 3, photovoltaic arrays should be avoided across the building expansion joints, settlement joints, deformation joints for installation, in order to avoid the building deformation displacement caused by component leakage, falling off and other faults;

4, photovoltaic modules as balcony enclosure installation, need to meet the requirements of the relevant building codes, such as middle and high-rise residential balcony railing should not be less than 1.1m;

5, parallel to the roof installation, there should be enough ventilation and heat dissipation gap, ventilation and heat dissipation gap, ventilation and heat dissipation gap, should not be used to prevent the installation of photovoltaic arrays. heat dissipation gap, poor ventilation and heat dissipation will have an impact on the power generation of the photovoltaic system;

Translated with DeepL.com (free version)