We already know that theincandescent bulbsthey are very expensive so much that they are well on their way to get out of our homes and never come back. Most of us also know that theLED bulbsthey are more efficient and are gradually supplanting other sources of artificial lighting.
TheLED bulbsthey should represent the new standard of lighting, but are they really that sustainable? Sure, if you compare them with theincandescent bulbsthey are, but when you compare oneLED bulbwith aCFL bulb What happens?
To know the answer, it is not necessary to compare only the efficiency with the lumen per watt ratio, it will be necessary to analyze the entire life cycle of thelight bulb,that is, from the extraction of materials, to production up to transport and distribution. TheUS Department of Energydid this analysis and the conclusions are quite interesting.
The graph above summarizes the result of the analysis conducted by the US Department of Energy. Apparently the overall average of theenergy consumptionlinked to the life cycle of afluorescent bulb(CFL) is very similar to the energy expenditure of oneLED bulb.Fortunately, by 2015 theLED lampswill achieve further objectives in terms of performance: the life cycle ofLED lampsit should halve its environmental impact and therefore also its energy consumption.
In any case, the analysis did not take into account the final stages of the life cycle, namely the consumption and disposal stage: theLED bulbsthey are much less fragile than CFLs and they last three times longer, not to mention that they ignite faster.
In any case, the real leap forward will take place within the next two years, when theLED bulbsnew generation will spread on the market. Philips has already presentedLED bulbsfrom 200 lumens per watt, a result that is twice as promising as current market products.
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