To understand LED lighting (saves much of electricity), I am appending below two articles to understand the concept of LED and your requirement.
Lamps used for lighting are commonly labeled with their light output in lumens; in many jurisdictions this is required by law (not in India). In simple terms, *Lumens* (denoted by lm) are a measure of the total amount of visible light (to the human eye) from a lamp or light source. The higher the *lumen* rating the “brighter” the lamp will appear A 23 watt compact fluorescent lamp emits about 1,500–1,600 lm. Many compact fluorescent lamps and other alternative light sources are labeled as being equivalent to an incandescent bulb with a specific wattage. (not being followed in India) Below is a table that shows typical luminous flux for common incandescent bulbs and their equivalents. *Electrical power equivalents for differing lamps* Minimum light output (lumens)Electrical power consumption (watts) Incandescent Compact fluorescentLED450409–116–88006013–159–121,10075 18–2013–161,60010024–2818–222,40015030–52303,10020049–75Not available4,000 30075–100Not available On September 1, 2010, European Union legislation came into force mandating that lighting equipment must be labelled *primarily* in terms of lumens, instead of watts of electric power consumed. This change is a result of the EU's Eco-design Directive for Energy-using Products (EuP). For example, according to the European Union standard, an energy-efficient bulb that claims to be the equivalent of a 60 W tungsten bulb must have a minimum light output of 700–750 lumens. To estimate lumens from watts for various types of lamp, see luminous efficacy. The Ultimate Guide To LED Light Bulbs ------------------------------ Today's most efficient way of illuminating and lighting is undoubtedly LED. When compared with older lighting technologies such as Incandescent, Halogen and CFL bulbs, you will find that LED is by far the most energy saving and smart solution. The pace at which LED technology is growing is truly incredible, although they've now been around for many years, today's LED technology has completely changed lighting as we know it. We'll be the first to admit that the process hasn't always been consumer friendly, and we've compiled this guide to help you understand how any why you can benefit from making the switch. What is an LED? LEDs (light-emitting diodes) are a type of electronic light source. LEDs are different from conventional light sources such as incandescent and halogen lamps. They last much longer, consume far less energy and emit very little heat. They are highly durable and do not feature fragile elements such as glass tubes or filaments; they are also safer because they do not contain any mercury or lead. LED bulbs are now available in the most common light fittings, including GU10, B22, E27 and MR16. How much power do LEDs use? LED Bulbs use up to 90% less energy than an incandescent or halogen bulb of equivalent brightness. LEDs are far more efficient at converting electricity, measured in watts, into light, measured in lumens. As such, a typical 4 watt LED bulb can easily achieve a light output comparable to a 50 watt halogen, sometimes higher due to* its high lumen to watt ratio*. Long Life - How long do LEDs last? One of the biggest benefits of using LED is its outstanding life time expectation due to very efficient thermal management, LED Bulbs are able to remove heat through heat sinks to help prolong the life expectancy of the bulb by slowing down lumen depreciation. A well-built LED with good thermal management should last up to 50,000 hours. Be wary of retailers making exaggerated claims about the life expectancy of their products. [image: what to look when you shop for light bulb] How bright are LEDs? The brightness of a bulb is measured in lumens (Lm), the higher the number of lumens, the brighter the bulb. Despite using very low wattages, LEDs are able to emit the same brightness as traditional light sources. To make things easier, most retailers quote an equivalent incandescent wattage so consumers can replace their lights and keep the same brightness. How can LEDs help me save money? Whether it's in a standard household or a commercial environment, lighting represents as much as 20% of the overall energy consumption. By switching to LED, a considerable amount of money can be saved due to the lower wattages of the products. LEDs also last far longer so you won't need to replace them often and their reliability means you won't need to worry about maintenance. Once you've switched to LED, you will start saving money in less than a year. Are LEDs safe? Yes. Unlike CFLs (Compact Fluorescent Lamps), LEDs do not contain mercury. They also give off comparatively little heat, making them safer to handle after prolonged use. The absence of glass enclosures and fragile parts also reduces the likelihood of breakage, so you won't have to worry about broken glass. Why LED Lights are Eco-Friendly? Using LED lights cuts carbon emissions. When you replace your old incandescent or CFL bulbs with LED, you are essentially reducing harmful CO2 levels being released into the air. This is because LED lights use less energy, energy that power plants produce by burning fossil fuels and oil. The less energy that these power plants need to make through burning of fuel, the less carbon emissions are released into the environment. LED lights don't waste energy. Incandescent bulbs consume high amounts of energy but only give minimal light luminance. Where is the excess energy going? Excess energy is converted to heat and released also into the environment, excess energy means wasted energy. LED lights do not contain harmful metals. Lead and mercury are classified as the most toxic heavy metals in the world. And halogen, incandescent, and CFLs contain these heavy metals. Discarding these bulbs elsewhere or even in landfills can cause the lead and mercury content to spill and be mixed into your source of water or as a vapour in the air you breathe. On the other hand, LEDs don't contain any of these harmful metals. What types of LED bulbs are there? (Being introduced in Indian Market) Thankfully, LED bulbs exist as replacements for most caps, shapes and sizes so there's always an LED for you. [image: Spotlight]Spotlight [image: GLS]GLS <http://www.thelightbulb.co.uk/product/LED-Lights-Bulbs/LED-GLS/c-344> [image: Candle]Candle <http://www.thelightbulb.co.uk/product/LED-Lights-Bulbs/LED-Candles/c-343> [image: Golfball]Golf Ball <http://www.thelightbulb.co.uk/product/LED-Lights-Bulbs/LED-Golfballs/c-341> [image: Reflector]Reflector <http://www.thelightbulb.co.uk/product/LED-Lights-Bulbs/LED-Reflectors/c-382> Will your LED Bulbs work in my existing fittings? Yes, all LED bulbs are retrofit and are designed to work with existing light fittings and be used as direct replacements. Do LEDs come on immediately or do they need to warm up? Unlike CFLs, which usually take a few minutes to reach full brightness, LEDs reach full brightness instantaneously. What is an SMD LED? SMDs (Surface Mounted Device) are the new generation of LED lightingLED is soldered directly onto the PCB therefore requiring less space and improves the thermal connection. Will LEDs operate outdoors or in cold temperatures? LED are ideal for operation under cold and low outdoor temperature settings unlike CFLs. They are also extremely durable and built with sturdy components and can withstand tough conditions. Because LEDs are resistant to shock, vibrations and external impacts, they make a perfect choice for outdoor light systems. -- With best wishes S Chander -- You received this message because you are subscribed to the Google Groups "Thatha_Patty" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
