saving bulbs and environment


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Here is a succinct study on the environmental impact of new bulbs so-called energy saving.

Keywords: bulbs, economy, energy, pollution, light, compact fluorescent, waste processing, impact, nature

Introduction



Fluorescent tubes, improperly called "neon tubes", compact fluorescent lamps and high intensity discharge lamps (for public lighting) belong to the family of light sources in which light is produced, directly or indirectly, by a electrical discharge in a gas, a metal vapor or a mixture of several gases and vapors.

In the case of fluorescent and compact fluorescent lamps, most of the light is emitted from a phosphor layer excited by the ultraviolet radiation from the discharge. It remains confined within the lamp, the glass bulb is not transparent to UV light.

Despite their size, the low electric power consumption and high light flux of the light sources mainly destined to the lighting of factories, offices, schools, hospitals as well as street lighting urban and road.

New more compact lamps with luminous properties suitable for domestic lighting made them their breakthrough years in homes.
All these light sources use a very low dose of metallic mercury enclosed in the envelope of the lamp glass. There is currently no mercury substitute that would allow the operation of discharge lamps and which would give them a luminous efficiency equal quality and light.

In recent years the contribution of discharge lamps to the preservation of the environment has improved a lot. This change applies to product features but also the associated manufacturing process.

The life cycle assessment of light sources, "from cradle to grave", teaches us that, on average and on a European scale, the electrical energy consumed throughout their lifetime is responsible for more 90% of their effect on the environment. The life cycle analysis of a tubular fluorescent lamp made by an independent British firm shows that the energy consumed contributes to 99% in its impact on the environment.

Although the reduction or elimination of hazardous materials used already contributes to environmental protection, the most effective contribution is, of course, increased luminous efficiency of sources, that is to say, the improvement of transformation of electric energy into light energy.

Télécharger le document intégral: « Les Lampes à Décharge et l’Environnement »

Content:
- Contribution to environmental protection and resource conservation
- Materials having an effect on the environment
- Elimination of end of life lamps


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