The installation location of double-sided double-glass n-type monocrystalline solar photovoltaic modules should be selected in the location that receives the most sunlight throughout the year to ensure the maximum efficiency of its bifacial power generation. In the northern hemisphere, the module is best placed facing south; in the southern hemisphere, it is best placed facing north. At the same time, the tilt angle of the module should also be set according to the local solar radiation angle and ground reflectivity to achieve the best power generation efficiency. During installation, special attention should be paid to avoid shadows from trees, buildings or other obstacles to the module to reduce the loss of output power.
The bracket design should avoid blocking the back cells of the bifacial module to ensure that the module can fully receive reflected light and scattered light. The bracket purlins should be located at the edge of the module to reduce the blocking of the back cells. In addition, the selection and installation of the block is also crucial. The appropriate position and number of the block should be selected according to the size and type of the module. For frameless double-glass modules, special attention should be paid to the size and position of the clamp to avoid damage to the module. During installation, ensure that the clamp is tightened in place to prevent the module from loosening or deformation.
Special attention should also be paid to the junction box position, cable length and string wiring method of the double-sided double-glass n-type monocrystalline solar photovoltaic module. The junction box position needs to consider the module layout to ensure that the cable length is moderate to avoid wiring difficulties or efficiency loss caused by too long or too short. In the horizontal arrangement, the upper and lower modules are in the same direction, and the adjacent modules are in opposite directions to maximize the use of reflected light. At the same time, attention should also be paid to the optimization of the string wiring method to improve power generation efficiency and reduce system costs.
The power generation efficiency of double-sided photovoltaic modules is greatly affected by the height and inclination of the modules. Generally speaking, the higher the height of the module from the ground, the more stable the irradiance received on the back, and the higher the power generation efficiency. However, attention should be paid to the height limit (generally not more than 2 meters) to avoid wind resistance and safety hazards. The inclination setting needs to comprehensively consider factors such as the local solar radiation angle, ground reflectivity and module installation location to achieve the best power generation effect.
Cleaning and maintenance of double-sided double-glass n-type monocrystalline solar photovoltaic module is essential to maintain its power generation efficiency. Since the bifacial module has the characteristics of double-sided power generation, it is necessary to clean its front and back regularly to remove dust, bird droppings and other obstructions. Use soft and clean cloth for cleaning, and avoid using corrosive chemicals. At the same time, pay attention to climatic conditions and avoid cleaning under meteorological conditions such as wind force greater than level 4, heavy rain, and heavy snow.
When installing and maintaining double-sided double-glass n-type monocrystalline solar photovoltaic module, it is necessary to strictly abide by the safety operating procedures and warning signs. Avoid maintenance and repair work without power off to prevent safety accidents such as electric shock. In addition, pay attention to the mechanical load of the module (including wind and snow pressure) to ensure that the installation method and installation location meet the design requirements.
To ensure the long-term stable operation of the double-sided double-glass n-type monocrystalline solar photovoltaic module, regular inspection and maintenance are required. The inspection content includes but is not limited to whether there is damage or abnormality in the module frame, glass, battery cell, module surface, backplane, junction box, wire and other parts. If any problems are found, they should be adjusted or replaced immediately. At the same time, the bracket and pressure block should be checked for tightness to prevent looseness or deformation that may cause damage to the module.
The installation and maintenance of double-sided double-glass n-type monocrystalline solar photovoltaic module has a series of special requirements, which are designed to ensure that it can fully utilize the double-sided power generation efficiency and operate stably for a long time. By following the above requirements, the power generation efficiency and economic benefits of photovoltaic power stations can be effectively improved.
