Are you still blindly for street lamp equipped with solar panels?

Solar panels is by absorbing sunlight, will through the photoelectric effect of solar radiant energy, directly or indirectly converted into electrical energy device, is divided into monocrystalline silicon, polycrystalline silicon and amorphous silicon 3 kinds.

using the panels are mainly of monocrystalline silicon and polycrystalline silicon solar street lamps, due to the single crystal silicon materials of high purity, the conversion rate is higher than polysilicon. Monocrystalline silicon conversion rate of 19% 20%, polysilicon conversion rate is 17% 18%, of course, price of single crystal silicon is higher than that of polycrystalline silicon.

when the choose and buy solar street lamps, we should first consider the monocrystalline silicon solar panels?

　　“ A price points a points goods & throughout; Has long been regarded as the truth, that's right, the performance good or size of solar panel price is expensive, prices must be able to buy a better product, but choose when buying lights solar panels is mainly see configuration need, the price can't be considered the only standard products, you have to consider more compatible or not.

so, how to choose a suitable for its solar panels, solar street lamps? A comprehensive analysis must be made according to the actual situation.

　　1. According to the actual installation area

monocrystalline silicon conversion rate is high, the choose and buy all the performance parameters of the stability, more suitable for rainy days and sunshine is relatively not very plenty of southern region is used; Polycrystalline silicon panels conversion rate lower, used in some sunshine, sunshine is good more than eastern and western regions. Light conditions, therefore, the superior place if use solar street lamp, there is no need to configure monocrystalline silicon panels, so to a certain extent, reduce the cost of lighting.

　　2. According to the working voltage of choose and buy

solar panels to string and arranged in series voltage, impact current in parallel, as the size of the voltage and current needed for different solar panels will be different.

the electricity supplied by the solar panels and stored in the battery if the battery to normal charging, make sure the working voltage of solar panels in the storage battery voltage of 1. About five times. If to 6 v battery charging, need to use 8 v - 9 v solar panels; 15 v to 12 v battery charging is needed 18 v solar panels.

　　3.

influence of choose and buy according to the required output power of solar panel size and the output power of itself, and panels output per unit area of about 127 wp/square meters, the area of the greater the power output, the greater the average power output of the solar panels suitable for 3 - the power of the light sources More than 5 times, rich in light, turn on the light for 3 - short area More than 4 times, whereas 4 - More than 5 times.

from above the solar panels to choose according to can come to a conclusion:

equipped with solar panels to scientific decision, if blindly blindly think your is the best, will spend more money, especially some larger projects, because the purchase is large quantities of solar street lamps, the choose and buy the appropriate panels, not only can guarantee the project quality, also can save the budget.