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Life cycle analysis: aluminium and PVC pipes
This life cycle analysis was carried out for the UK Government. It is standardised so that the figures relate to a 1m length of pipe. It gives each pipe a life span of 25 years but does not take into account any benefits from recycling the materials. Roll over the Cost to consumer This is the typical purchase price for 1 metre of each type of pipe. It is an indication of the total costs of production but does not include items such as disposal and treatment of environmental impacts. Wastes Wastes are made at all stages of the life cycle as well as at the final disposal stage. Recycling would reduce the amount of wastes for both types of pipes. Depletion of non-renewable resources The production and use of both materials will require the use of natural resources. This analysis looked at a life cycle that does not include recycling which could reduce the amount used. The value is per metre of pipe and assumes a life of 25 years. Air acidification Nitrogen oxides and sulfur dioxide emissions are quantified as an equivalent amount of hydrogen ions (H+). Greenhouse effect This describes the overall contribution to the greenhouse effect and global warming. It includes emissions such as carbon dioxide released during the production, use and disposal of the pipes. The analysis does not include the recycling of the PVC or aluminium. Coal and oil PVC production uses hydrocarbon raw materials. Bauxite mining and the production of aluminium also uses coal and oil to provide the energy needed during its processing. Total energy Describes the total amount of energy needed in the production, installation, use and disposal of the pipes. The majority of this energy is needed for the production and transport of the pipes or raw materials. Units are MegaJoules (millions of Joules).
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to see explanations of the data.