Outdoor solar light configuration, know these tips, save the electricity bill
The configuration of outdoor solar light has always been a problem that bothers us. One is that there are many outdoor solar light accessories, which require professional knowledge and skills. The second is that there are a large number of manufacturers, and the quality is uneven. It is generally an exaggeration. So, today we are talking about the configuration of solar lights.
First, the choice of outdoor solar light source:
The selection principle of the outdoor solar light source is a light source suitable for environmental requirements, high luminous efficiency and long life. Commonly used light source types are three primary colour energy-saving lamps, traditional nano lamps, electrodeless lamps, LEDs, etc. For the global environmental status, the most widely used solar street light source is the induction lamp light source and LED light source.
Second, the choice of outdoor solar light fixtures:
The choice of lamps is mainly to filter the reflectivity, illumination, and maintenance factor. The quality can generally be measured by the three indicators of road surface brightness, uniformity and glare. The specific quality performance is:
1. Brightness level: The average brightness of the road has different brightness requirements according to the road grade. Generally, the expressway and the main road require a brightness requirement of 2 cd/m2 or more, and the second trunk road and the auxiliary road or the residential road are relatively low.
2. Average illuminance: The average illuminance refers to the average value of all illuminances on the road surface, which is the unit of illumination intensity, generally expressed by LM.
3, glare: road lighting should strive to limit the range of uncomfortable glare in a certain range, generally expressed by G value, under normal circumstances, G = 7
Third, the system configuration calculation:
The formula for calculating the peak sunshine hours is that the peak sunshine hours = A / (3.6X365)
Fourth, the determination of the series voltage:
The DC input voltage of the outdoor solar light source is used as the system voltage, generally 12V or 24V. When the solar module voltage is 36V, the battery voltage requirement is not less than 2/3 of the component voltage, so the voltage of the battery, controller and light source must be selected. At 24V.
Fifth, the choice of controller:
The controller is generally made of stainless steel, which is beautiful and durable. The charge and discharge controller is designed with light control, time control, overcharge and over-discharge protection and can realize secondary energy-saving control. Half power illumination in the specified period. The battery can be equipped with a “maintenance-free lead-acid battery”. Most of the charge and discharge controllers are built into the control box.
Sixth, solar panel capacity calculation:
For outdoor solar light, the overall system configuration formula: P = light source power X light source working time/peak sunshine hours; where P is the power of the battery component, the unit is W; the light source working time unit is H.
Seven, battery capacity calculation:
It is preferred to determine the storage type of battery type and battery according to the local rainy weather conditions. There is more rainy weather in the south, and the storage weather is generally 5-7 rainy days. Battery capacity calculation formula: battery capacity = load power X day working time X storage days ÷ discharge depth ÷ system voltage, where: battery capacity unit is AH; load power unit is W; daily working time unit is H; storage days unit is D The depth of discharge is generally about 0.8, and the system voltage is V.
The above points are just a simple discussion about the configuration of solar lights. Many of them need to be understood in-depth, as long as they can choose a cost-effective outdoor solar light product.