how to design and calculate solar street light system | Queneng Guide
How to Design and Calculate a Solar Street Light System
Designing and calculating a solar street lighting system requires a systematic approach, balancing energy needs with available solar resources. This article provides a practical guide for professionals.
1. Assessing Energy Requirements
First, determine the lighting needs. Factors include:
* Illumination level (lux): This depends on the road type (residential, highway) and local regulations. Higher lux values require more powerful lights.
* Number of lights: This depends on road length and spacing between poles.
* Operational hours: How many hours per night will the lights operate? Consider seasonal variations.
* Lighting technology: LEDs are energy-efficient, but their power consumption still needs to be accurately calculated. Specify wattage (W) and lumen output (lm) per fixture.
2. Solar Panel Sizing
Next, calculate the daily energy consumption:
* Total wattage: Multiply the wattage of a single light by the number of lights.
* Daily energy (Wh): Multiply the total wattage by the operational hours. Add a safety margin (10-20%) to account for cloudy days.
Now, determine the required solar panel capacity:
* Panel wattage: Choose a suitable solar panel wattage.
* Number of panels: Divide the daily energy (Wh) by the panel wattage (Wp) and add a safety margin (10-20%) to account for panel efficiency and system losses. Always round up to the nearest whole number of panels.
Consider panel efficiency and available sunlight hours at the location. Consult solar irradiance maps for accurate data.
3. Battery Bank Selection
The battery bank stores excess solar energy for nighttime use. Factors to consider:
* Battery capacity (Ah): This depends on daily energy consumption and desired autonomy (number of cloudy days the system should operate without sunlight).
* Battery voltage (V): Choose a voltage compatible with the solar panel and lighting system.
* Battery type: Deep-cycle lead-acid, lithium-ion, or other appropriate battery types are suitable depending on your application. Lithium-ion generally offers longer lifespans and higher efficiency.
Calculate the required battery capacity considering the depth of discharge (DoD) allowed for the chosen battery type.
4. Charge Controller and Inverter Selection
* Charge controller: This regulates the flow of electricity from the solar panels to the battery bank, protecting the battery from overcharging. Its capacity should match or exceed the solar panel’s current output.
* Inverter: This converts the DC power from the battery to AC power for the lights. Its power rating should match the total wattage of the lights.
Select controllers and inverters appropriate for the chosen battery voltage and system capacity.
5. System Integration and Installation
Proper grounding, wiring, and protection are crucial for safety and system longevity. Follow all relevant electrical codes and regulations.
This process requires careful consideration and accurate calculations. Consulting a qualified solar engineer is highly recommended for complex installations.
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FAQ
Industry
How long is the expected lifespan of Queneng’s solar lighting system?
Under normal maintenance, our solar lighting systems can last over 10 years. High-quality materials and advanced technology contribute to their long-lasting durability and reliability.
Battery and Analysis
What are the possible reasons why the battery or battery pack cannot be charged?
2) The battery pack is connected incorrectly, and the internal electronic components and protection circuits are abnormal;
3) The charging equipment is faulty and there is no output current;
4) External factors cause charging efficiency to be too low (such as extremely low or high temperature).
What certifications have the company's products passed?
Battery Performance and Testing
What is the power output of the battery?
The smaller the internal resistance of the battery, the higher the output power. The internal resistance of the battery should be smaller than the internal resistance of the electrical appliance. Otherwise, the power consumed by the battery itself will be greater than the power consumed by the electrical appliance, which is uneconomical and may damage the battery.
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How do Luxian solar street lights contribute to reducing carbon emissions?
By using solar power as their energy source, Luxian solar street lights reduce reliance on fossil fuels for electricity generation. This contributes to lower carbon emissions, helping mitigate climate change and promoting environmental sustainability. Their energy efficiency further reduces the overall carbon footprint of lighting systems.
APMS system
What should I do if I encounter a system malfunction?
QUENENG offers 24-hour remote technical support, allowing clients to contact the after-sales team at any time for assistance. The system also includes intelligent self-diagnosis capabilities to detect and alert potential issues automatically.
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Queneng’s Solar Street Lights are designed to provide reliable, energy-efficient lighting for streets, parks, and other outdoor spaces.
Queneng's Luxian Reliable Solar Street Light offers energy-saving LED lighting for outdoor use. This durable, solar-powered street light provides reliable illumination, reducing energy costs and environmental impact. A perfect solution for sustainable outdoor lighting.
Queneng Lufeng Wind Energy LED Outdoor Solar Street Lights offer high-performance, eco-friendly illumination. These energy-efficient LED street lights harness solar power and wind energy for sustainable, cost-effective outdoor lighting solutions.
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