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LED (Light Emitting Diode) training (1).pptx
- 1. LED (Light EmittingDiode) INDEX : • WHAT IS LED? • WHAT ARE HEAT SINKS AND WHY DO LEDS NEED THEM? • WHAT ARE THE ADVANTAGES OF USING LED? • WHAT IS LUMENS? • WHAT IS IP RATING? • WHY LED IS BEST WHEN INCORPORATING WITH SOLAR? • LED COLOR TEMPERATURES & THEIR USES • OUR MAIN LED CATEGORIES • QUESTIONS
- 2. What is LED? LED stands for light emitting diode. LED lighting products produce light up to 90% more efficiently than incandescent light bulbs How do they work? An electrical current passes through a microchip, which illuminates the tiny light sources we call LEDs and the result is visible light. Efficiency is measured in Lumens per watt (Lm/W)
- 3. What are heatsinks and why do LEDs need them? Possibly the most important part of a light is the LED heat sink is a heat exchanger that absorbs the heat generated by an LED module and dissipates the thermal energy into the ambient air. The spectral performance, lumen output and lifetime of an LED are closely related to its operating temperature.
- 4. WHAT ARE THEADVANTAGES OF USING LED? lifespan of average LED is 50,000-100000 hours. An LED light can last anywhere from 6 to 12 years before you need to replace it. That is 40 times longer than an incandescent bulb. Even if you’re using fluorescent, metal halide or sodium vapor lights, an LED light will last at least 4 times longer. Therefore, lowering furthermore the cost of replacement and maintenance to the consumer You can measure the energy efficiency of a lighting source in useful lumens, which describes the amount of lighting that the device emits for each unit of power, or watt, that the light source uses. In non-LED lights that of these lumens go to waste. LED lighting produces less waste light and more useful lumens than other lighting technologies. you could see as much as a 60% to 70% improvement in your overall energy efficiency. In some cases, the improvement could be as great as 90% ! * SHOW SOME CALCULATIONS on ROI and maintenance cost * traditional lighting sources, like fluorescent lighting and mercury vapor lights, use mercury internally as part of their construction. hence, when they reach the end of their lifespans, they require special handling and this affects the environment. In LED you don’t need to worry about that LEDS have the ability to work under extreme conditions , which is why they can be used in many different conditions, freezers , signages , cold storages , building perimeters etc , traditional lights will diminish or stop working in these conditions. traditional lighting sources like incandescent bulbs turn more than 90% of the energy they use to heat, allocating only 10% of energy to actual light production. LED produces almost no heat within the enclosure
- 5. WHAT ARE THEADVANTAGES OF USING LED? LEDs are very small (about the size of a spec of pepper). This means that they can be used in almost any application. If you combine them in bunches, you create a traditional bulb. If you string together a series of LED lights, you create a line or series of lights — like a string of Christmas lights. Think of the options this gives you for lighting in your facility. LED devices can be so small you can use them for illuminating everything from a shop floor to a major league football stadium. LED lights can turn on and off instantly. traditional lighting sources have a shorter lifespan if you frequently switch them on and off. With LED It does not cause any reduction in their lifespan or efficiency. Since LEDs are unaffected by switching on and off, they can be rapidly cycled for flashing light displays or applications that require sensors that frequently switch from on to off and back again LED Uses low voltage system of 12V as compared to 120 or 240V for traditional lights which holds a much higher risk of fatal accidents and electrical accidents which are fatal. LEDs has dimming capabilities with proper hardware and can dim upto 95% and work even more efficiently than on full power , for traditional lights the opposite is true. LEDs illuminate 1-180 degrees depending on the design and lens used from light source , traditional lights illuminate 360 degrees only which is why it cant be focused and guided for use in different purposes hence lots of illumination is wasted
- 6. WHAT IS LUMENS? Lumens measure how much light you are getting from a bulb. More lumens means it's a brighter light; fewer lumens means it's a dimmer light ( intensity of lights ) Lumens let you buy the amount of light you want. So when buying light bulbs, think lumens, not watts. A brighter light will have more Lm/W so you will require less W to illuminate a given area which means a further reduction on your energy used hence reduction in cost To calculate Lm/w the following formula needs to be used: Total lumens / Total watts = Lm/W
- 7. What is IPrating? • The IP rating system is an international standard system and it tells us the grade of resistance to different situations, scenarios and applications such as rain , dust storms , under water, extreme conditions etc. it helps us select the correct light for the purpose.
- 8. Why LED isbest when incorporating with SOLAR? system to power 10 x 100W bulbs using traditional lights for 1 hour system to power 10 x 20 W bulbs using LED lights for same illumination • We only require 20% of the panels to give the same illumination as a traditional light and this would mean massive savings on initial cost • Since LEDs have a higher flexibility with the Voltage threshold it seems to be the correct option for a solar system too • Since power consumption is so low for LED solar incorporated lights can be used for a wide range of applications like streetlights, floodlights, traffic signals, warning lights, traffic signs etc
- 9. LED COLOR TEMPSAND THEIR APPLICATIONS Warm white Cool White The best place to use warm white bulbs is anywhere you spend a lot of time relaxing and unwinding around the home such as bedrooms, living rooms, dining rooms, conservatories and even in the garden as summer lights. They're best suited for the busier and more lively areas of the home where you need something a bit brighter. They're very popular in kitchens, utility rooms, bathrooms, malls, offices and other work environments.
- 10. LED/SOLAR STREET LIGHTS Recommended Use: areas with no electricity , areas where government hasn’t provided electrical lines , newly developing areas , areas where digging for foundations isn’t an option, places where temporary light is required and on urgent basis Advantages: much quicker to set up as no cables needed, no electrical cost, can be set up anywhere, dimmable, AUTO on/off Recommended height: 4-8m Wattage Available: 40-100W Warranty: 1 year IP65 rating
- 11. LED STREET LIGHTS Recommended Use: areas where high visibility is required, areas that are already developed and have electrical supplies , newly developing areas , side walks, main roads, expressway, service roads, where cars move at higher speeds Advantages: much higher illumination capability, low electrical cost, no maintenance cost, can be set up anywhere, dimmable option can be applied , AUTO on/off option, long life up to 10 years Wattage available: 50-300W Warranty : 3-8 years IP65-66 rating
- 12. FLOOD LIGHTS RecommendedUse: areas where the light needs to be focused, has a large provision for changes for different purposes, Many different beam angles and many designs. Areas where the light has to be focused on a particular area , sport grounds and fields Advantages: light will be focused and beam angle can be changed according to client requirements, low electrical cost, Recommended height: any height Wattage Available: 50-1500W Warranty: 2-5 years IP65 – IP67 rating
- 13. HIGH BAY LIGHTS Recommended Use: areas where high visibility is required, areas that need the lights to be suspended from above , warehouses, workshops, workstations etc. areas where high efficiency is required Advantages: wide beam angle to get maximum coverage, much higher illumination capability, low electrical cost, no maintenance cost Recommended Height: 4m-20m Wattage available: 50-300W Warranty : 3-5 years IP65-66 rating
- 14. EXPLOSION PROOF LIGHTS Recommended Use: areas where there is high risk of flames or areas where there is highly combustible gases or liquids which in turn can cause flames or an explosion. Explosion proof lights can be used in all sectors be floodlights , highbay lights , and commercial lights , mines , petrol sations , aluminium factories , etc Advantages: available for almost all lighting uses, low electrical cost, no maintenance, a lot safer than traditional explosion proof as there is no heat from the LED and no risk of the LED blowing up and causing a spark which in turn can cause a major disaster. Recommended height: any height Wattage Available: 36-400W Warranty: 3-5 years IP65 – IP67 rating
- 15. Identifying Zones Zone0 is a hazardous area in which an explosive atmosphere is present continuously for long periods of time or will frequently occur. Zone 1 is a hazardous area in which an explosive atmosphere is likely to occur occasionally in normal operation. It may exist because of repair, maintenance operations, or leakage. Zone 2 is a hazardous area in which an explosive atmosphere is not likely to occur in normal operation but, if it does occur, will persist for a short period only. These areas only become hazardous in case of an accident or some unusual operating condition.
- 16. COMMERCIAL LIGHTING RecommendedUse: any indoor application in malls, houses, commercial buildings, offices etc. Advantages: low buying cost, low maintenance, low electrical consumption, no heat dissipation , extensive designs and choices Recommended height: 2-10m Wattage Available: 1-60W Warranty: 1-3years IP20 – IP68 rating
- 17. CANOPY LIGHTS RecommendedUse: where visibility is essential and in most cases needs to be concealed on the roof. Such as filling stations Advantages: low maintenance, low electrical consumption, low heat dissipation , extensive designs and choices Recommended height: 6-12m Wattage Available: 100-180W Warranty: 3-5years IP66 – IP67 rating
- 18. SOLAR LED WARNING/TRAFFICSIGNS • Used in areas under construction and need a quick and reliable solution with no power supply , usually used in road construction areas or rural roads where no govt. electrical line is available
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