How efficient are LEDs?

Compared to conventional technologies, LED lighting can deliver the same amount of light using as little as 10% to 15% of the power. This huge reduction in energy consumption can enable commercial customers to realize significant savings on their energy bills.

Aren't LEDs more expensive?

We understand that cost is a big factor for energy managers weighing choices in lighting, but so are concerns that today’s technology will only get more efficient and less expensive over time. LEDs can operate as standalone devices, but when grouped or clustered they require additional steps to operate properly. LEDs need proper components such as a circuit board, driving components and some cases and housings to endure the elements. LED circuits can be designed rapidly, but to ensure that they operate correctly and for long periods of time, they require testing. When they are running correctly, LEDs offer up to 80% energy savings, and over time, they will end up paying for themselves.

How 'green' are LEDs?

LED lighting solutions use much less electricity than many other old technology lighting products. This means that less electricity has to be produced to operate them, resulting in lower greenhouse gas emissions from power plants. Unlike fluorescents and CFLs, they contain no mercury. And because of their long life, they also reduce solid waste. Additionally, they produce very little heat and can reduce energy usage related to HVAC. The U.S. Department of Energy has estimated that increased adoption of LEDs over the next 15 years would also reduce electricity demands from lighting by 62 percent, prevent 258 million metric tons of carbon emissions, and eliminate the need for over 100 new power plants.

Where can LEDs be used?

Almost anywhere. LED replacements are already available for bulb types such as tube lamps, high-bays, low-bays, PAR reflectors, MR reflectors, decorative, under-cabinet and more. When used on dimmers, particularly dimming systems that support many bulbs, we suggest testing a few LEDs first to test compatibility.

Do LEDs attract insects?

No, they do not. Insects see entirely different spectrums of light and are attracted to ultraviolet light. This is not to say that all bugs aren’t attracted to LED light, but most can’t see the light that LEDs produce.

How long do LEDs last??

LEDs are notable for being extremely long-lasting products. Many LEDs have a lifetime of up to 50,000 hours, some even longer. This is approximately 50 times longer than a typical incandescent, 20-25 times longer than a typical halogen, and 8-10 times longer than a typical CFL. If used 12 hours a day, a 50,000 hour bulb will last more than 11 years. Used 8 hours a day, it will last as long as 17 years.

Why do LEDs use such little power?

LEDs do not use a filament where a conductor is heated and light is created. Filament based lighting consumes more power than the light it produces. LEDs produce very little amounts of heat and do not use filaments, making them far more efficient in consumption and output.

How bright are led light bulbs?

LED bulbs available for standard fixtures vary in brightness from less than 50 lumens up to about 1200 lumens. The brightest led bulbs for standard fixtures are the floodlights and spotlights. The brightest of these uses about 25 watts and produces light comparable to a 120-watt incandescent.The brightest LED bulbs with approximately the same size and shape as ordinary incandescent bulbs produce up to 600 lumens. With a few exceptions these bulbs are somewhat directional so they are most effective when pointed at the area to be illuminated.

How much can we save with LEDs?

With regard to current consumption, CO2 emissions and maintenance costs, LEDs offer huge potential for savings – without making any reductions in light quality. When the longer service life is taken into account, the overall balance is clearly positive, even if the procurement costs are comparatively higher than conventional incandescent lamps. Depending on the system solution, clever technical solutions can reduce power costs by up to 80%. LEDs are very efficient when compared to standard lights such as incandescent lamps or halogen lamps. Whilst incandescent lamps offer efficiency of a good 10 lm/W, and halogen lamp around 20 lm/W, the efficiency of white LEDs is between 70 and 100 lm/W (depending on the type and light color). Fluorescent lamps have an efficiency of 70-90 lm/W. In the laboratory, the efficiencies of LEDs are over 140 lm/W. Depending on the type, the power consumption is only 0.1 to 15 W. This means: Even small LEDs can provide powerful lighting. However, a sound efficiency comparison is only meaningful in a complete, functioning system, as the efficiency of electronics and optics also have a decisive role to play here. In addition to that, standardization committees take system efficiencies into consideration, as a detached observation is not sufficient. Whilst a white incandescent lamp converts only five percent of the input energy into light, with LEDs, this value has already reached around 35 percent. In the case of colored light, the ratio of 0.5 to 40 percent comes down even more in favor of LEDs. And whilst the incandescent lamp has reached the end of its development, this is certainly not the case for the LED. There is still the potential to increase efficacy, in order to make LEDs even more efficient light sources than they are today.

What are the environmental benefits of LED lighting?

Of the total electricity produced in the country, around 30% is used for lighting. Therefore, by switching to LED light bulbs the total electrical consumption can be reduced by a significant amount. Most of the electricity is produced by burning fossil fuels, releasing toxic chemicals and greenhouse gases into the atmosphere. This contributes to destructive phenomena like acid rain and global warming. By reducing our energy usage, we can reduce the amount of harmful chemicals that are released into the environment and fight the looming threat of climate change.

Which wattage LED should I use to replace my existing lights?

Just like any properly designed lighting system, the correct wattage will depend on a few factors that all lighting suppliers should know and be able to use to recommend the correct fittings for you. However some good rules of thumb are:

  • Halogen Downlight to LED       5 – 1 Wattage Ratio   e.g. 50W Halogen Downlight is roughly equivalent to a 10W LED fitting.   
  • Incandescent Lamps to LED    7 – 1 Wattage Ratio  
  • CFL Lamps to LED                   2 – 1 Wattage Ratio
  • Linear Fluorescent Tubes        2 – 1 Wattage Ratio
  • Other Discharge lamps such as Metal Halide and Mercury Vapour to either LED or Induction Solutions are usually a 2-1 Wattage Ratio

The above rules of thumb are just a guide, but always remember that BIGGER IS NOT ALWAYS BETTER, an over-lit room is just as uncomfortable as an under-lit room. A correctly selected lamp will light your space to the appropriate level, and keep your energy use to a minimum.

Can I buy Larica LED through online E-commerce sites?

Larica LED available on flipkart, amazon and snapdeal. larica is about to launch their own E-commerce portal soon.

Why are LED lights more efficient than traditional lamps?

Essentially its all about heat generation, a lot of halogen lamps only convert around 20% of input power to light, with the rest of the energy being converted to heat, for traditional incandescent lamps, only around 10% of input power is converted to light.

Why are LED lights more expensive than standard light fittings?

LED’s or Light Emitting Diodes are a solid-state devices that emit light when current is passed through them. Light fittings that contain LED’s usually also contain circuitry that rectifies and controls the power passing through the components ensuring their extremely long expected lifespan. They are less fragile than traditional filament fittings, but are more complicated to manufacture, hence the increased expense.

What is CRI?

Colour Rendering Index’ or CRI is a measure of how well a light source can project the colour of objects accurately. It helps to compare the effect of the light source to how the object will actually appear in natural light or an ideal light source. Natural sunlight has the greatest CRI of 100. The higher the CRI of a light source, the more natural are the colours seen under them. The scale of measurement ranges from 0-100.

How can you define a watt?

The amount of power consumed by a bulb to produce light is defined as a ‘Watt’. Greater the watts of a bulb, the greater is the power taken up by the light source.

What does lumen mean?

The amount of light emitted from any light source is defined as ‘Lumens’ (lm). The higher the lumens for a light source, the greater light it produces.

Do LEDs emit UV ?

LED illumination produces little infrared light and virtually no UV emissions.This is important as both of these can degrade or harm goods and materials. LED is the ideal solution for illuminating UV sensitive objects or materials such as in museums and art galleries.

Can LED withstand cold or hot temperatures?

LEDs are ideal for operation under cold and low outdoor or indoor temperature such as outdoor winter lights, freezer rooms etc.. By contrast with fluorescent lamps, low temperatures may affect operation and cause system failure.

Can LEDs be used in areas of low voltage?

Yes low-voltage power supply is sufficient for LED illumination meaning that LED can be designed for use in almost any situation.

How much can I save if I use LEDs?

According to Consumer Reports an LED can save you Rs 1000-1500 per bulb over its lifetime.

Where are the best places to use LEDs?

According to Consumer Reports an LED can save you Rs 1000-1500 per bulb over its lifetime.

Are LEDs dimmable?

Yes. For best results, look for specially labeled packages that indicate that the LEDs are dimmable. Keep in mind you may need to replace your existing dimmer switch with one that’s compatible with the LED bulb of your choice.