By Frank Werner
In an environmental existence cycle evaluation of goods (LCA), an unambiguous, scientifically dependent, ‘objective’ attribution of fabric and effort flows to a product is natural fiction. this is often as a result of basic epistemological stipulations of LCA as a modelling strategy below the complexity of our socio-economic procedure. in its place, a variety of psychological types and values consultant this attribution. This results in a useful version in a selected choice situation.
This publication indicates for the 1st time how psychological types and values impression this attribution within the lifestyles cycle stock step of LCA. one of many key findings is that different administration principles for a sustainable use of fabrics has to be taken into consideration for the attribution of fabric and effort flows to a product. in a different way, development strategies urged by way of an LCA may prove to even aggravate the environmental scenario if reassessed from a meta-perspective.
As a outcome of this ebook, the declare of unambiguitiy (‘objectivity’) of the existence cycle stock has to be deserted. A group-model development method for LCA is built that permits one to know the choice makers' psychological types and values within the stock research on a case- and situation-specific foundation. merely by way of this, LCA effects becomes suitable in a decision-making process.
Two case reports at the modelling of recycling and different end-of-life concepts of aluminium home windows and beech wooden railway sleepers in LCA supplement the methodological part.
This ebook is a ‘must have’ for researchers, experts and practitioners within the fields of decision-oriented existence cycle review in addition to product-related environmental administration, modelling and decision-making.
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Additional info for Ambiguities in Decision-oriented Life Cycle Inventories: The Role of Mental Models and Values
Marketing and lobbying, are secondary but nonetheless frequent uses of LCA-results (see also Chap. 2). Furthermore, LCA-results can be used as a basis for environmental labelling82. , the selection of a product, the selection of a supplier for the same product as procurement decisions, or the evaluation of different design options. In all these decision situations, the environmental criterion is only one among many. The financial leeway is one of the further criteria common to all decision situations mentioned84.
These in- and outputs should include the use of resources and releases to air, water and land associated with the system. The summary of the environmental interventions of a product over its life cycle is called the life cycle inventory (LCI). Step 3: Life Cycle Impact Assessment evaluates the inventoried in- and outputs with regard to their environmental implication. Several steps can be distinguished within the assessment: the classification (the assigning of inventory data to impact categories), the characterisation (the weighting of the assigned inventory data within impact categories) and the valuation (the aggregation of the impact categories by normalisation and addition).
1996:56). This kind of systematic error is concerned with if processes held relevant for the environmental impacts of a product are considered at all. This book postulates a second source of systematic error related to the setting of system boundaries (as final defining element of an input-output model) in the life cycle inventory analysis: the reductionistic way of modelling in the life cycle inventory analysis resulting in an input-output model and the representativeness and adequacy (validity) of the model in view of the characteristics of the real material and energy flows of the socio-economic system.