In our life, for street light, contact everyone should is quite much, and we have contact with the street now generally the use of solar energy street light, that since the use of solar street lighting so widely is certainly because of their unique characteristics, the solar street light and what are the disadvantages? Today, small make up for you to introduce some of the shortcomings of our solar street light for everyone to understand.
What are the drawbacks of solar street light
Disadvantages one: high cost.
A very common solar street light, configuration down to nearly two thousand yuan, mainly in the solar system above, consists of a solar panel, solar battery, solar street light controller the three pieces. The same power of the light, the cost of solar street lights is about 2-4 times the ordinary street lights.
Shortcoming two: the energy conversion efficiency is low.
Although the price is relatively high cost, but the price is high, not necessarily the quality is also very good. At present, the conversion efficiency of the solar cell panel is relatively low. Theoretically, the conversion efficiency of the silicon solar panels can reach more than 25%, but after the actual installation, it may be blocked by buildings and other reasons, resulting in conversion rate of only 15%-19%, or even lower.
Disadvantage three: vulnerable to external interference
Because it is the conversion of solar energy into electrical energy principle, the installation of climate conditions directly affect the storage and use of solar energy street light. Such as the local time of solar radiation, atmospheric dust, continuous rainy days, if a long time not to absorb enough energy, then it is likely not unlit, is worse, a long period of non normal amount of power, intensify the use life of the reduction speed.
Disadvantage four: narrow range of light effect, uneven illumination
At present, the domestic production of LED lighting fixtures, are more or less light range is too narrow, the illumination is not enough uniform phenomenon, the technology is not mature enough. If the introduction of foreign advanced lighting lights and lanterns, its price is relatively expensive, and not worthwhile, so there is still a unsolved problem. The narrow road, township road lighting requirements is not high, the small power solar lights to meet the lighting requirement; in street lighting requirements higher urban road, solar street light has disadvantages: light coverage narrow, brightness is not uniform.
Shortcoming five: life is short
The battery and the controller’s price is higher, and the battery is not durable, must change regularly, the controller’s service life is also only 3 years, the reliability is low. In the existing main road, many are the use of dual power supply and battery power supply mode, resulting in the cost of management is also increased.
Disadvantage six: lead acid battery pollution
Currently a lot of suppliers in order to reduce costs, as buyers configured lead-acid battery. It is mainly composed of lead, sulfuric acid and some other metal and plastic, scrap battery acid containing large amounts of lead, random emissions will not only serious soil and water pollution, damage to the air, the ecological balance, but also lead to human metabolism and neurological disease. And the current domestic waste battery recycling is still in a relatively disordered state, so a lot of discarded lead-acid batteries are polluting our living space. Even if the battery is used, pollution will be the same.
Shortcoming seven: guard against theft
At present, the main focus of the work of solar street light anti-theft focus on battery. A hanging, one is buried. Usually with the suspension is welded on the light post, anti-theft lock. But if really want to steal, you can stand high, pry lockset, violent theft; buried the less secure, usually with cement pouring out space in the sealed. If someone wanted to steal, can be dug up land, with iron tools such as open cement, remove the battery. So the security is still a problem.