How to Build Residential Solar (1)

 

Solar panel kits selection
At present, the solar panel sold in market can be divided into amorphous silicon and crystalline silicon. And the crystal silicon consists of polycrystalline silicon and single crystal silicon. Photoelectric conversion efficiency of three kinds of materials: single silicon (up to 17%) > polycrystalline silicon (15% ~ 12) > amorphous silicon (about 5%).

 residential solar
Under weak light, the crystal silicon (single crystal silicon and polycrystalline silicon) won’t produce current basically. While the amorphous silicon can do it. If you choose polycrystalline silicon solar panel with 250W, the 5KW residential solar needs 20 solar panels.

Stent selection
The solar photovoltaic system stent is a special support for the design of solar photovoltaic system in order to display, install and fix the solar panel. The material include aluminum alloy, stainless steel. After hot dip galvanizing treatment, the service life of stent is longer.

residential solar
Support is mainly divided into two categories: fixed and automatic tracking. Currently, the fixed support can make a certain adjustment based on the seasonal change in the market. Just like when you just installed. You can adjust the inclined plane of solar panel through moving fastener to let inclined adapt to the different angles of the light.

 
Automatic tracking one with rotating device is same as sunflower which adjust angel according to sun rotation. Light utilization rate is high, but the relative cost is relatively high. In china, the solar panel usually installed facing south. The users can select fixed one. If you do not consider the cost, sunflower automatic tracking sunlight is a good choice

 

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