July 23, 2012

solar led street light

Solar led street light
Akshar Enterprise manufacturing “AKSHAR” brand Solar Led Street lighting is a fresh new alternative to traditional street light such as LPS, HPS, or MH street lights. LED lighting provides a multitude of advantages over conventional incandescent light: LED street lights are environmentally friendly, energy efficient, and cost-effective. This smart, "green" option for outdoor lighting has emerged on the green scene due to the recent technological advancements of LED illumination. But more "greener" option for you is Solar street lighting by recycled green energy lighting system. They are of energy saving and environmental friendly, which can be used for residential, road, park and so on. High quality solar panel absorbs sunlight and convert into electricity energy, then charges maintenance-free battery and finally LED street lights automatically when day off, auto-off when day break. The working method of solar street lights is: solar panel absorbs sunlight and converts it to electricity to drive 11W LED Street light. The whole system is mainly composed by : 11W LED street lighting, solar panel, lead acid battery and solar street lighting controller, pole (suggest 5-6m height). Because of different weather condition in different country and different requirements from different market, so the specification of each part of the whole solar street lighting system, especially solar panel and battery, are depending on following factors: • Average local daily sunshine hours. • Working times of the system per night. • Backup days of the solar system during rainy days.  Solar street lights are raised light sources which are powered by photovoltaic panels generally mounted on the lighting structure. The photovoltaic panels charge a rechargeable battery, which powers a LED lamp during the night.  Features Most solar panels turn on and turn off automatically by sensing outdoor light using a light source. Solar streetlights are designed to work throughout the night. Many can stay lit for more than just one night not if sun in not available for a couple of days. Older models included lamps that were not fluorescent or LED. Solar lights installed in windy regions are generally equipped with flat panels to better cope with the winds.  Types Solar street lights are generally classified into two types. (1) Standalone solar street lights : Standalone solar street lights have photovoltaic panels mounted on the structure. Each street light has its own photovoltaic panels and is independent of the other lamps. (2) Centrally operated solar street lights : In this type, the photovoltaic panels for a group of street lights are mounted separately. All the street lights in a particular group are connected to this central power source.  Advantages of LED Solar Street Lighting :  Lower power consumption  Higher power, higher intensity  Save all your electricity cost. Save electric transformer and cable cost. Free maintenance  Environmental Impact - Eliminate Hazardous Disposal  Longer lifetime: Lifespan of solar panel is 20-25 years. Lifespan of LED street lights is 6-8 years. Lifespan of battery is 4-6 years 1. High lumen output LED street light offers up to eight times more brightness than incandescent lamps without emissions harmful to the environment. 2. Tremendous energy savings High power LED light sources are extremely efficient returning a 50 to 80% saving over conventional sodium or mercury lamps. 3. Long life Operating for an average of 10 hours per day LED has a life span of up to 13 years, 50,000 hours. Unlike traditional light bulbs LED is not fragile and susceptible to breakage or vandalism. 4. High Color Rendering LED Lights are excellent Color Rendering lighting,Much more clearly lighting for the Highway. 5. No glare or strobe effect LED light sources do not produce glare or strobe effects common in conventional street lighting, reducing visual fatigue for drivers and pedestrians alike. 6. No dust absorption or yellowing Because LED operates at low voltage and low temperature there is no reduction in brightness or yellowing, which is associated with traditional street lighting, over the life span of the LED. 7. Instant start Unlike sodium lights, require a time delay. 8. Solar street lights are independent of the utility grid. Hence, the operation costs are minimized. 9. Solar street lights require much less maintenance compared to conventional street lights. 10 Since external wires are eliminated, risk of accidents is minimized.  LED Light Bulbs: Comparison Charts : LED light bulbs will eventually be what we use to replace incandescent bulbs – CFLs are a temporary solution to energy-efficient lighting. The reason LEDs have not yet displaced CFLs from the market are twofold: the first generation LED bulbs had a narrow and focused light beam, and the cost of the LED bulbs was too high. Recent developments in LED technology, however, have been addressing these issues. LEDs have been 'clustered' to provide more light, and mounted within diffuser lenses which spread the light across a wider area. And advancements in manufacturing technology have driven the prices down to a level where LED bulbs are more cost-effective than CFLs or incandescent bulbs. This process is continuing, with LED bulbs being designed for more applications while the prices are going down over time. Cost Comparison between LEDs, CFLs and Incandescent light bulbs LED CFL Incandescent Light bulb projected lifespan 50,000 hours 10,000 hours 1,200 hours Watts per bulb (equiv. 60 watts) 6 14 60 KWh of electricity used over 50,000 hours 300 700 3000 Cost of electricity (@ 4.17per KWh)-Rs 1251 2919 12510 Bulbs needed for 50k hours of use 1 5 42 Equivalent 50k hours bulb expense(Rs) 1000 1100 2520 Total cost for 50k hours(Rs) 1351 4019 15030

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