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Commercial LED Light Tutorials

Sep 5th 2018, 7:21 am
Posted by matthiasde
led lightingFor some people, probably the largest single factor against low energy LED lighting as a substitute for the soon-to-be-phased-out regular incandescent light bulb will be the cost differential. There isn't any doubt that an LED equivalent light bulb (for example a 6w LED spotlight as a direct replacement for a 35w GU10 halogen lamp) is significantly more expensive than either the original or possibly a CFL alternative.

There are actually however three important points to keep in mind about the higher price for low energy LEDs compared to incandescent and energy saving CFL light bulbs.

For starters, the cost difference reflects the very fact that the utilization of LED for general purpose domestic lighting is still quite novel, though increasing manufacturing levels and consumer take-up will drive the price down dramatically once both come fully on stream over the coming months.

Second, and partially associated with the observation above, is the fact that the price of LEDs drops by a factor of twenty over the course of each decade. This characteristic is reliably predicted by Haitz's Law (very similar to Moore's Law for computer chips and then for similar reasons, principally because LEDs are, much like computer chips, pure electronic devices). Haitz also presents the fact that LED performance (amount of light per watt of electricity) increases tenfold over the exact same decade.

Third and possibly most intriguing is the idea that as far as the price of domestic lighting is concerned, the price of light bulbs will be entirely irrelevant. It's an extraordinary yet conveniently provable proven fact that even if regular light bulbs were totally free and LED lights cost, let's say something outrageous like $80 each, it might still be vastly more economical to purchase LED low energy lights.

The main reason because of this is simple: the expense of electrical lighting will be the cost of the energy i.e. electricity. It matters not one jot exactly what the actual light bulbs cost; it's what it costs to run them that really counts. In addition, since LEDs last for tens of thousands of hours (in practice, decades of use) you only need to pay the purchase price once, unlike regular bulbs which last only upto two thousand hours or simply over 1 year.

The other biggest gripe about low energy LED lighting is light levels and quality, or even in technical parlance luminosity and light color.

The concern about luminosity stems largely from historical notions of commercial led lighting (their website) lighting applications for example LED Christmas lights and pocket torches which are clearly not capable of providing anything close to useable domestic lighting. On the contrary, you may right now purchase among the latest Sharp Zenigata LED series of light bulbs which is rated at 80 lumens per watt (measure of luminosity).

To know what this means, consider that a standard 40w incandescent bulb delivers about 360 lumens as well as a 60w bulb about 540 lumens, which gives a ratio of 9 lumens per watt. Anything that offers greater than 25 lumens per watt can be classed as being an energy saving light bulb. Zenigata LED light bulbs consume 6.7 watts and thus produce 6.7 * 80 lumens per watt which is 536 lumens, on a par with the standard 60w incandescent light bulb.

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