Life Cycle Analysis of LEDs Compared to Other Bulbs

Sustainability encompasses an ever greater part of our lives and can even the lighting no support. In their own homes dominated until now the longest the old fashioned light bulb, which with the EU Regulation no. 244/2009 was banished store shelf. As part of this, consumers have to deal with new bulbs and decide which one is of the most sustainable today. Here the LED, which is touted as the best bulbs trumps. The following article deals with the sustainability of LED lamps compared to other products.

Life Cycle Analysis of LEDs Compared to Other Bulbs

Why a life cycle analysis has shed light on more than just the energy consumption

Light emitting diodes, or LEDs, have the potential to save energy while improving the light quality and performance. Compared to other light sources, LEDs are generally considered particularly energy-efficient and environmentally friendly. To measure the latter property, the LED has to be considered in more detail.

In this analysis, several points emerge:

  1. Material / raw material procurement
  2. manufacturing
  3. transport
  4. use
  5. disposal

In a life cycle analysis, it is of great importance to involve all of the above. Unfortunately, many studies report only to the energy consumption, the one light source consumes during its life cycle.

Currently there are two studies that have dealt extensively with this topic: A study from 2012, which was commissioned by the US Department of Energy in order  The second study comes from a well-known manufacturer of bulbs, but is very dated from 2009 and to include them in this article. Even between the first trial and the date of publication of this article is a large margin, which makes the results appear worse than they would be today.

Comparison of bulbs: bulb vs. Energy saving bulb vs. LED

LAMP CONSUMPTION WATTS LUMINOSITY IN LUMENS LIFETIME IN HOURS.
light bulb 60 900 1,000
Energy saving lamp 15 900 8,500
LED 12.5 800 25,000

Source: LEDBULBBAY

Since the above three products neither in terms of luminance even lifetime are comparable, it was determined how many lamps in each category are required to reach 20 million lumen hours:

  • 22 bulbs
  • 3 energy saving lamps
  • 1 LED

The US study shows the following results:

  • The average cost for a life cycle of LEDs and energy-saving lamps is the same in about.He is only a quarter of a conventional bulb.
  • If LED lamps reach their destination in terms of power by 2015 [1], to decline by 50 percent their energy consumption.In energy-saving lamps, however it should not be improved so much.
  • The complete energy required for a life cycle of all lamps was 90 percent followed by their mere use of the production and transport depleted.Moment it is hard to determine how much is the energy required for the packaging of LEDs. According to estimates, it is from 0.1 to 27 percent of the entire energy demand.

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