Wie entwirft und berechnet man eine solare Straßenbeleuchtungsanlage?

How to Design and Calculate a Solar Street Light System

Solar street lights are an excellent way to save energy and reduce electricity costs. They are eco-friendly, easy to install, and require minimal maintenance. However, designing and calculating an efficient solar street light system can be complex. This guide simplifies the process to help you achieve an optimal configuration.

Steps to Design and Calculate a Solar Street Light System

Step 1: Analyze Key Factors

Start by evaluating various factors, such as:

• Installation site: Consider the road width, weather conditions, and sun exposure.
• Lighting requirements: Determine the illumination and uniformity standards for the location.

These considerations form the basis for selecting the right components for your solar street light system.

Step 2: Calculate Pole Height

The height of the light pole should match the road width to ensure proper illumination. Use this formula:

Pole Height (m) = Road Width (m) ÷ (1.1–1.3)

Example:
For a road 6 meters wide:

• Minimum pole height = 6÷1.3=4.66 ÷ 1.3 = 4.6 m
• Maximum pole height = 6÷1.1=5.56 ÷ 1.1 = 5.5 m
  A pole height of 4.6–5.5m is ideal.

Step 3: Determine Illumination Standards

Set the brightness level based on road standards. Common requirements include:

• Highways: Average 20 lux, uniformity 0.4
• Main roads: Average 15 lux, uniformity 0.35
• Residential roads: Average 5–8 lux, uniformity 0.3–0.35

Choose LED wattage accordingly to meet these standards.

Step 4: Calculate Power Consumption

Determine the LED power required to achieve the desired brightness.

Example:
An LED chip with 180 lumens per watt can deliver 10,800 lumens at 60W. Adjust wattage based on your brightness needs.

Step 5: Estimate Daily Operating Time

Decide how many hours the light will operate daily. Many systems use dimming modes to save energy, such as:

• 1 hour at 50% brightness.
• 5 hours at 100% brightness.
• 6 hours at 50% brightness.

In this case:
6+6/2​=9 hours at 100% brightness.

Step 6: Size the Battery

The battery should store enough energy for nightly use and backup during cloudy days.

Formula: Battery Capacity (Wh)=Power Consumption×1.5

Example:
If daily power consumption is 540Wh:

540×1.5=810 Wh

Keep the Depth of Discharge (DoD) at 80% to extend battery lifespan.

Step 7: Select Solar Panel Size

Solar panels must generate enough energy to charge the battery daily. Consider the location’s solar radiation.

Example:

• A 100W solar panel generates ~0.55kWh/day in sunny regions (e.g., Nigeria).
• The same panel generates ~0.35 kWh/day in areas with lower solar radiation (e.g., Guangzhou).

For regions with less sunlight, larger solar panels are required.

Schlussfolgerung

Designing a solar street light system involves analyzing site conditions, calculating energy requirements, and choosing the right components. While this can seem challenging, partnering with an experienced supplier ensures the process is seamless.

We specialize in providing end-to-end solar lighting solutions, from design to assembly. Let us simplify the process and deliver a system tailored to your needs!