Solar street light application solutions

Key Formulas for Solar Street Light Design

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This article summarizes essential formulas commonly used in solar street light design, integrating national standards and practical case studies from various papers:

1. Average Road Illuminance Calculation

Formula:
Eavg = (N × Φ × U × K) / A

  • Parameter Description:
    • N: Number of fixtures
    • Φ: Total luminous flux per lamp (lm)
    • U: Utilization factor (0.4-0.6)
    • K: Maintenance factor (0.7-0.8)
    • A: Road area (m2) = Road width × Lamp spacing

Example:
6m wide road, lamp spacing 30m, using 10,000 lm LED, one-sided lighting:
Eavg ≈ (1 × 10,000 × 0.5 × 0.75) / (6 × 30) ≈ 20.8 lx

Solar street light design

2. Solar Panel Power Calculation

Formula:
Ppv = Qday / (Hpeak × ηsys)

  • Parameter Description:
    • Qday = PLED × Twork (Daily energy consumption, Wh)
    • Hpeak: Local annual average peak sunlight hours (check meteorological data, e.g., Beijing 4.5h)
    • ηsys: System efficiency (0.6-0.75, including line losses, controller losses)

Example:
Load power 80W, daily operation 10h, Shanghai Hpeak=3.8h:
Ppv ≈ (80 × 10) / (3.8 × 0.65) ≈ 324 W

3. Battery Capacity Calculation

Formula:
C = (Qday × D) / (DOD × ηbat × Vsys)

  • Parameter Description:
    • D: Number of consecutive cloudy days (usually 3-5 days)
    • DOD: Depth of discharge (0.5 for lead-acid batteries, 0.8 for lithium batteries)
    • ηbat: Charge/discharge efficiency (0.85-0.95)
    • Vsys: System voltage (12V/24V)

Example:
Daily consumption 800Wh, 24V system, 3 days backup, lithium battery:
C ≈ (800 × 3) / (0.8 × 0.9 × 24) ≈ 138.9 Ah → Choose 150Ah battery

4. Solar Panel Installation Angle

Formula:
θ = φ + (5° to 15°)

  • Parameter Description:
    • φ: Local geographical latitude
    • Winter optimization: latitude +10°~15°, summer optimization: latitude -5°

Example:
Nanjing latitude 32°, fixed bracket tilt angle set at 37° (32°+5°) to improve winter power generation.

5. Wind Pressure on Solar Panels

Formula:
F = 0.61 × v2 × A

  • Parameter Description:
    • v: Maximum wind speed (m/s)
    • A: Wind-facing area of the photovoltaic panel (m2)

Example:
Panel area 2m2, design wind speed 30m/s:
F = 0.61 × (30)2 × 2 = 1098 N
Need to verify the wind resistance of the lamp pole and foundation.

6. Component Operating Voltage Correction (Temperature Effect)

Formula:
Vmp = Vmp(STC) × [1 + α × (T – 25)]

  • Parameter Description:
    • α: Temperature coefficient (approximately -0.35%/°C for monocrystalline silicon)
    • T: Actual operating temperature (°C)

Example:
Nominal component voltage 18V, operating temperature 60°:
Vmp ≈ 18 × [1 – 0.0035 × (60-25)] ≈ 15.3 V

7. Voltage Drop Compensation Due to Temperature

Formula:
ΔV = Nseries × α × ΔT × Vmp(STC)

Example:
3 series-connected components, each Vmp=30V, temperature difference 35°:
ΔV ≈ 3 × (-0.0035) × 35 × 30 ≈ -11V
Need to adjust the MPPT voltage range.

8. Solar Panel Capacity Optimization Design

Empirical Formula:
Ppv(opt) = 1.2 × Ppv

  • Consider shadowing, dust loss (efficiency reduction of 10-20%)
  • When paralleling multiple components, increase bypass diodes to reduce hotspot effects.

9. Typical Design Parameter Comparison Table

ParameterReference ValueStandard Basis
Illuminance uniformity U0≥0.4 (main road)CJJ45-2015 Road Lighting Standards
Component tilt angle error≤±3°GB/T 9535 Photovoltaic Module Standards
Battery cycle life≥1500 times (lithium battery)GB/T 22473 Energy Storage Standards
Wind resistance rating≥12 levels (33m/s)GB 50009 Building Load Code

Note: Actual design should be combined with PVsyst simulations and DIALux lighting simulations, and validated through field tests.

 

Solar street light dialux lighting calculation

LED Solar Street Light Design Guide (2025 Edition)

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1. Solar Street Light System Design Composition and Selection Standards

1. Core Component Configuration

ComponentFunctional RequirementsSelection Parameters
LED Light SourceColor temperature 4000-5000K, Color rendering index ≥70Luminous efficacy ≥150 lm/W, IP65 protection
Photovoltaic PanelMonocrystalline silicon efficiency ≥22%Power = Daily system consumption / (Local average peak sunshine hours × 0.7)
BatteryCyclic life ≥1500 timesCapacity (Ah) = Daily consumption (Wh) / (System voltage × Depth of discharge × 0.9)
ControllerMPPT efficiency ≥95%Overcharge/overdischarge protection, load time-based control

Solar street light dialux lighting calculation

2.Solar Street Light Key Design Parameter Calculations

1. Solar Street Lighting Demand Design

Formula:

PLED = E × A / (η × U × K)

  • Parameter Explanation
  • E: Design illuminance (Main roads 15-30 lx, Branch roads 10-20 lx)
  • A: Illuminated area = Road width × Distance between lights
  • η: Luminaire efficiency (0.8-0.9)
  • U: Utilization factor (0.4-0.6)
  • K: Maintenance factor (0.7-0.8)

Example: Road width 6m, distance between lights 25m, target illuminance 20 lx

→ PLED = 20 × (6 × 25) / (0.85 × 0.5 × 0.75) = 20 × 150 / 0.32 ≈ 94W

→ Choose a 100W LED module (Luminous flux 15,000 lm)

2. Solar Street Light Photovoltaic System Capacity Calculation

Steps:

  1. Daily Consumption: Qday = PLED × Working Time (e.g.: 100W × 10h = 1000Wh)
  2. PV Panel Power: PPV = Qday / (Hpeak × 0.7)
    • Hpeak: Local average peak sunshine hours (e.g.: Beijing 4.5h)
    • → PPV = 1000 / (4.5 × 0.7) = 317W → Choose 2 × 160W modules
  3. Battery Capacity: C = Qday / (Vsys × DOD × 0.9)
    • Vsys: System voltage (usually 12/24V)
    • DOD: Depth of discharge (80% for lithium batteries)
    • → C = 1000 / (24 × 0.8 × 0.9) = 57.6Ah → Choose 60Ah lithium battery

3. Solar Street Light Structural Design Specifications

1. Pole and Component Layout

Road TypePole Height (H)Pv Panel AngleInstallation Distance
Branch Road4-6mLatitude + 5°25-30m
Main Road6-8mLatitude + 10°30-35m
Expressway8-12mAdjustable bracket35-40m

Wind Resistance Design: Flange size ≥ pole diameter × 1.2 (e.g.: Pole diameter 76mm → Flange 200×200×10mm)

4. Solar Street Light Intelligent Control Strategy

1. Multi-Mode Operating Scheme

Time PeriodControl LogicPower Adjustment
18:00-22:00Full power operation100%
22:00-24:00Dynamic dimming (traffic detection)50-70%
00:00-6:00Maintain minimum safety illuminance30%

Backup Power: In areas with continuous rainy days ≥3days, configure a grid power complementary interface.

5. Installation and Maintenance Points

1. Construction Process

  1. Environmental Assessment: Avoid tree/building shadows, obstruction < 2 hours on winter solstice.
  2. Foundation Casting: Depth = Pole Height / 10 + 0.2m (e.g.: 6m pole → 0.8m deep).
  3. Wiring Standards: Photovoltaic cable voltage drop ≤3%, Battery burial depth ≥0.5m.

2. Operation and Maintenance Cycle

ComponentInspection ItemsCycle
Pv PanelSurface cleaning, Angle correctionOnce a month
BatteryVoltage check (≥11.5V@12V)Once a quarter
LED LuminairesLumen depreciation check (annual degradation <3%)Once a year

6. Economic Analysis

1. Cost Comparison (based on 6m pole)

ItemTraditional Grid LightingLED Solar Street Light
Initial Investment8,000 Yuan12,000 Yuan
Annual Electricity Cost600 Yuan0 Yuan
Total Cost over 10 Years14,000 Yuan12,000 Yuan

Payback Period:

Payback Period = (Price Difference / Annual Savings) = (12,000 – 8,000) / 600 ≈ 6.7 years

7. Typical Cases

Project Name: New Rural Road Lighting

Parameters Configuration:

  • Road width 5m, staggered layout on both sides
  • LED power 60W × 2, luminous flux 9,000 lm/unit
  • Pv Panel 2 × 120W, battery 100Ah@24V

Performance Indicators:

  • Average illuminance 18 lx, uniformity 0.48
  • Continuous rainy backup 5 days
  • Annual energy-saving rate 100%

8. Risk Control

  1. Over-discharge Protection: Controller sets voltage ≥10.8V (12V system).
  2. Theft Protection: Photovoltaic panel bolts use irregular structures, battery case welded and fixed.
  3. Extreme Weather: Photovoltaic panels hail resistance level ≥ Class 3 (25mm hail impact).

Appendix: Recommended Design Verification Tools

  1. PVsyst (Photovoltaic system simulation)
  2. DIALux evo (Lighting simulation)
  3. Meteorological data sources: NASA POWER / China Meteorological Administration Radiation Stations

Through this guide, a systematic approach can be achieved from illumination requirements to economic returns, realizing a low-carbon and highly reliable road lighting solution.

Military Base solar street light

Military Base solar street light Solutions and Design guide

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Best Solar Military Base Lighting Solutions

In modern military bases, reliable, efficient, and economical lighting solutions are crucial. Solar lighting systems are increasingly becoming the preferred choice due to their environment-friendly and low-maintenance characteristics. Below are the best solar military base lighting solutions to meet your needs.

Military Base solar street light System Components

1.1 Solar Panels

  • Reason for Selection: High-efficiency monocrystalline solar panels with an efficiency of over 20% ensure maximum energy utilization.
  • Configuration: Each light is equipped with a 200Wp monocrystalline solar panel, output voltage is 24V. The number of solar panels is arranged reasonably based on the size of the base and lighting conditions.
  • Installation Angle: The installation angle is adjusted based on the local latitude; in Xisha Islands, the optimal angle is about 20° to maximize solar energy reception.

1.2 Batteries

  • Reason for Selection: Lithium-ion batteries have a long cycle life and low maintenance costs, capable of stable operation in extreme environments.
  • Configuration: Each light is equipped with a 24V/200AH lithium-ion battery, ensuring normal operation for 7 consecutive rainy days.
  • Charge and Discharge Management: Smart charge controllers with overcharge, over-discharge protection, temperature compensation, and auto-recovery features extend battery life.

1.3 LED Lights

  • Reason for Selection: High-efficiency LED lights ensure excellent lighting effects while being energy-efficient.
  • Configuration: Each light utilizes a 100W LED with an output of 10,000 lumens, color temperature set between 5000K and 6000K, and a color rendering index (CRI) of no less than 80.
  • Placement: Light pole spacing is designed as 30m for main roads, 40m for secondary roads, and 50m for living areas to ensure adequate illumination.

1.4 Control Systems

  • Time Detection: The system automatically detects the current time, turning on the lights from 7:00 PM to midnight, entering sleep mode from midnight to 6:00 AM, and recharging from 7:00 AM to 5:00 PM.
  • Light Intensity Detection: The system checks if the solar panel voltage exceeds the battery voltage to manage charging effectively.
  • Remote Monitoring: Leveraging IoT technology allows for remote monitoring and maintenance to promptly address issues, reducing upkeep costs.
  • Safety Features: The system provides protections against lightning, strong winds, and dust, ensuring proper functioning in harsh environments.

2. Key Lighting Parameters

2.1 Lumens (lm)

  • Main Roads: Average lumens should be at least 10,000lm.
  • Secondary Roads: Average lumens should be at least 7,000lm.
  • Living Areas: Average lumens should be at least 5,000lm.
  • Special Areas: Such as command centers and guard posts should have an average of at least 12,000lm.

2.2 Luminous Efficacy

  • LED Lights: Generally above 150lm/W.
  • Fluorescent Lights: Around 80lm/W.
  • Incandescent Lights: About 20lm/W.

2.3 Uniformity

  • Main Roads: Uniformity should be at least 0.4.
  • Secondary Roads: Uniformity should be at least 0.35.
  • Living Areas: Uniformity should be at least 0.3.
  • Special Areas: Uniformity for command centers and guard posts should be at least 0.5.

2.4 Color Temperature

  • Main and Secondary Roads: Suggested color temperature between 5000K and 6000K.
  • Living Areas: Suggested color temperature between 4000K and 5000K for a comfortable lighting environment.
  • Special Areas: Suggested color temperature between 6000K and 7000K for enhanced visual clarity.

2.5 Color Rendering Index (CRI)

  • Main and Secondary Roads: CRI should be at least 80.
  • Living Areas: CRI should be at least 70.
  • Special Areas: CRI should be at least 85.

3. System Design and Optimization

3.1 Solar Panel Installation

  • Location: Choose unobstructed areas around the base or at the top of light poles.
  • Angle: Optimize installation angles based on local latitudes for maximum solar reception.

3.2 Light Pole Height and Spacing

  • Height: Main road poles should be 10m, secondary roads 8m, and living areas 6m.
  • Spacing: Main roads 30m, secondary roads 40m, and living areas 50m.

3.3 Control System Optimization

  • Smart Management: Ensure batteries operate in optimal conditions to extend lifespan.
  • Automatic Adjustment: Lights automatically adjust brightness based on weather and lighting conditions.
Military Base solar street light

https://luxmanlight.com/led-solar-street-light-outdoor/

4. Application of Integrated Solar Cameras and Lights

4.1 Installation Recommendations

It is recommended to install integrated solar cameras and lights at the base entrance, exit, critical intersections, and key areas to ensure effective monitoring and enhance safety.

4.2 Key Features

  • HD Cameras: 1080p resolution with night vision capabilities ensure clarity even at night.
  • Communication Modules: Built-in GPRS or 4G modules enable real-time data transmission.
  • Smart Control: Integrated control systems for both cameras and lights support remote monitoring and adjustments.
  • Weather Resistant: Designed to withstand extreme conditions with features like anti-lightning, anti-wind, and water/dust proof (IP67).

5. Suggested Conditions and Recommendations

5.1 Areas with Abundant Sunlight

Choose a purely solar lighting system, ideal for regions like southern China and Middle Eastern deserts due to simplicity, low maintenance, and energy efficiency.

5.2 Areas with Moderate Sunlight

Opt for a solar and grid-mixed power system, offering dual assurance in regions like northern China and central Europe, with high reliability and adaptability.

5.3 Areas with Abundant Wind and Solar Energy

Choose a hybrid solar and wind power system to maximize natural resource utilization, suitable for regions like western highlands and coastal areas in China, as well as North American plains.

 

6. Case Studies

6.1 Xisha Islands Military Base (China)

  • Background: Located in a tropical region with long sunlight hours but occasional heavy rain, requiring reliable lighting and monitoring.
  • System Configuration: Equipped with 200Wp solar panels, 24V/200AH lithium batteries, and 100W LEDs producing 10,000 lumens.
  • Outcomes: Maintained 10,000 lumens, ensuring effective lighting, achieving uniformity over 0.4, and providing stable operation even during continuous rain.

6.2 Fort Bliss Military Base (United States)

  • Background: Located in Texas with good sunlight conditions but subject to extreme weather, requiring stable lighting and monitoring.
  • System Configuration: Similar to Xisha, leveraging solar panels, lithium batteries, and LED lights for efficient operation.
  • Outcomes: Ensure 10,000 lumens for adequate lighting and stable performance under varying conditions.

7. Things We Are Currently Doing and Optimizing

7.1 Intelligent Control

We are integrating IoT technology for remote online monitoring and intelligent adjustments, enhancing system reliability and efficiency by monitoring lighting conditions and battery status in real-time.

7.2 Multi-Functional Integration

We are working towards integrating additional functionalities such as surveillance cameras and communication modules with the solar lighting system to enhance overall service levels.

7.3 Application of New Materials

We are applying innovative materials to improve the efficiency and lifespan of solar panels, while also reducing overall system costs with advanced storage technologies.

7.4 Ongoing System Optimization

We value user feedback to continually monitor and evaluate existing systems, optimizing configurations for superior lighting and monitoring effectiveness across different environments.

Through these comprehensive design guidelines and solutions, we ensure our solar military base lighting systems deliver high performance, reliability, and economic benefits. Our solutions not only comply with international lighting standards but also provide stable illumination under various conditions, ensuring nighttime safety while promoting energy efficiency.

Portable Mobile Solar Light Tower

Solar Hybrid Light Tower: The Future of Sustainable Lighting

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In recent years, the concept of sustainable development has become increasingly popular, and energy-saving and environmentally friendly lighting solutions have become the keen pursuit of people. Solar hybrid lighting towers combine solar energy with traditional power sources, giving full play to the advantages of solar energy’s cleanliness and environmental protection, while overcoming the instability of solar power, setting off a wave of sustainable lighting worldwide.

Solar Hybrid Lighting Towers

What is a Solar Hybrid Lighting Tower?

A solar hybrid lighting tower is a portable lighting system that combines solar panels, batteries, and traditional fuel generators. It uses solar energy as its primary energy source, automatically switching to a traditional fuel generator when solar energy is insufficient, ensuring continuous and stable lighting.

Solar hybrid light tower Key Features:

  • Sustainable Development: Uses solar energy as the primary energy source, reducing carbon emissions and contributing to environmental protection.
  • Dual Power Supply: Equipped with solar and traditional fuel power supply modes, ensuring normal use even on cloudy days or at night, with high reliability.
  • Portable and User-Friendly: Compact structure, easy to transport and install, and can be quickly deployed in various environments.
  • High Brightness Output: Provides bright lighting up to 20,000 lumens, meeting the needs of large-area illumination.
  • Intelligent Control: Equipped with remote monitoring and control functions, allowing real-time adjustments to brightness and working modes, making it convenient and efficient to use.

Portable Mobile Solar Light Tower

Solar Light Tower Product Recommendation

Portable Mobile Solar Light Tower

LX600-09-6M sustainable lighting towers

6 meters high, 33,000 lumens bright, 700 square meters illumination range, suitable for small construction sites, outdoor activities, etc.

LX600-09-9M solar energy lighting towers

9 meters high, 66,000 lumens bright, 1500 square meters illumination range, suitable for large construction sites, large-scale activities, etc.

LX600-09-12M

12 meters high, 198,000 lumens bright, 2200 square meters illumination range, suitable for super large construction sites, super large-scale activities, etc.

Solar Hybrid Lighting Towers

https://luxmanlight.com/product-item/mobile-solar-lighting-tower/

Solar Hybrid Light Towers Application Areas:

  • Construction Sites: Provides safe and efficient lighting, ensuring construction progress and safety.
  • Outdoor Activities: Provides reliable lighting for music festivals, camping, sporting events, and other activities.
  • Disaster Relief: Provides rapid lighting support in emergency situations, assisting in the smooth carrying out of rescue work.
  • Temporary Lighting: Suitable for temporary lighting needs during holiday activities, exhibitions, markets, etc.

Hybrid lighting towers Future Prospects:

With the continuous development of solar energy technology and people’s increasing emphasis on sustainable development, solar hybrid lighting towers will have broader application prospects. Luxman will continue to focus on technological innovation, constantly launching products with better performance and more complete functions, leading the development trend of sustainable lighting.

Conclusion:

Solar hybrid lighting towers, with their energy-efficient, reliable, and environmentally friendly characteristics, are becoming the beacon for the future of sustainable lighting. Luxman’s solar hybrid lighting tower series will provide you with reliable solutions, helping you achieve efficient and effective lighting needs while reducing environmental impact. Choose Luxman, illuminate a brighter future!

Call to Action

If you also want to contribute to sustainable development, please visit the Luxman website to learn more about our products and contact our professional team. We will wholeheartedly provide you with the most suitable lighting solutions, allowing you to work with Luxman to illuminate the path of a greener future together!

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