It is often spoken of the Energy Grey to show that the impact Environmental of a product, for example, or a material, is not limited to its components. Indeed, the gray energy «Embodied energy»In English, it designates the energy that is not seen, and that is included in that material
La Energy Grey It therefore corresponds to the amount of energy necessary to produce an industrial good or a material, and is presented at several levels:
- At Lóleo Eventos, manufacturing of a product or a material;
- at the time of extraction of raw materials;
- at the time of Services of these raw materials;
- in the transformation of Subjects primas and the manufacture of the final product;
- at the time of merchandising from service;
- in the use of the product or in its utilization;
- at the time of recycling.
The gray energy of a material, equipment or service, is made up of two gray energies throughout the entire cycle of lifespan or after her. Non-renewable gray energy, that is, a Energy processed (contribution of energy necessary in the manufacturing and maintenance processes during the life cycle) of non-renewable origin, and the Energy Grey renewable, that is, a processed energy of renewable origin.
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