md-19005-en - Flipbook - Side 8
6. LCA: Interpretation
The following figure shows the relative contributions of
different Life Cycle processes and the primary energy
demand in the form of a dominance analysis.
Indicators of the impact assessment
The contributions from module A1 (raw materials)
dominate in almost all environmental impact
categories, except Depletion potential of the
stratospheric ozone lacer (ODP). Contributions from
transport throughout the life cycle are below 1% for all
environmental impact categories. The credits in
module D originate from the avoided environmental
effects in other product systems and arise almost
exclusively through the recycling of metal scrap.
Global warming potential (GWP)
The global warming potential is mainly determined by
the supply of raw materials, i.e. by the primary
products. Within these, the production of aluminium
primary products, including the upstream chains has
the greatest influence on the GWP factor of > 96 %.
However, at the end of life, the cost of providing the
aluminium precursors is offset by the environmental
benefits in the form of credits for the recycling of
aluminium products. Along the entire life cycle,
approximately 76 % of GWP emissions are credited by
metal recycling at the end of life.
Depletion potential of the stratospheric ozone layer
(ODP)
The Ozone depletion potential is dominated by scrap
recycling at the end of life. The ODP mainly
carries R11 and R114 emissions from the upstream
chain of power supply (especially electricity from
nuclear energy).
Acidification potential of land and water (AP)
The Acidification potential is triggered to 100 % in the
production stage by the raw material supply (mainly
aluminium sheets). A credit of approximately 66 % of
the total AP emissions along the life cycle is credited
mainly by aluminium and steel recycling.
Eutrophication potential (EP)
The greatest contribution to the EP arises from the
provision of raw materials with 97 %, in particular due
to the high energy demand in the form of natural gas
and electricity.
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Potential of tropospheric ozone photochemical
oxidants (POCP)
The POCP value is generated to 100% in the
production stage by the provision of raw materials in
the form of aluminium and steel sheets.
Abiotic depletion potential for non-fossil resources
(ADPE)
The ADPE value is predominantly conditioned by the
production stage module A1. Here, mainly the
upstream chain of the aluminium sheet contributes
almost 100 % to the overall ADPE.
Abiotic depletion potential for fossil resources (ADPF)
Within the production (A1-3), the ADPF value mainly
results from the upstream chains in module A1 (about
96 %). A credit of about 74 % is obtained mainly
through the recycling of aluminium and steel.
Within the production (A1-3), the total primary energy
demand is divided between approx. 71 % nonrenewable energy sources and approx. 29 %
renewable energies.
Total use of non-renewable primary energy
resources (PENRT)
The upstream chains associated with manufacturing of
the preliminary products (Module A1) contribute with
90 % to the production caused by the aluminium and
steel sheets. The production of the metal ceiling
systems contributes about 4 % to non-renewable
energy consumption. A credit is issued at the end of
life (60 %), which is generated by the recycling of the
preliminary products.
Total use of renewable primary energy resources
(PERT)
The PERT value along the entire life cycle results to 96
% from the upstream chains associated with the
preliminary products (A1), and the production of the
metal ceiling systems (A3) with 4 %. At the end of life,
credits (module D) of 60 % can be credited for metal
recycling.
Environmental Product Declaration TAIM e.V. - Verband Industrieller Metalldeckenhersteller – Metal ceiling systems
made of aluminium
