By Frank Werner
In an environmental lifestyles cycle evaluate of goods (LCA), an unambiguous, scientifically dependent, ‘objective’ attribution of fabric and effort flows to a product is natural fiction. this is often a result of basic epistemological stipulations of LCA as a modelling procedure lower than the complexity of our socio-economic process. as a substitute, a number of psychological versions and values consultant this attribution. This results in a sensible version in a particular determination situation.
This booklet indicates for the 1st time how psychological types and values impact this attribution within the existence cycle stock step of LCA. one of many key findings is that different administration principles for a sustainable use of fabrics needs to be taken into consideration for the attribution of fabric and effort flows to a product. another way, development recommendations advised through an LCA may perhaps prove to even aggravate the environmental scenario if reassessed from a meta-perspective.
As a end result of this booklet, the declare of unambiguitiy (‘objectivity’) of the existence cycle stock needs to be deserted. A group-model construction strategy for LCA is built that enables one to understand the choice makers' psychological versions and values within the stock research on a case- and situation-specific foundation. in simple terms via this, LCA effects turns into correct in a decision-making process.
Two case experiences at the modelling of recycling and different end-of-life strategies of aluminium home windows and beech wooden railway sleepers in LCA supplement the methodological part.
This publication is a ‘must have’ for researchers, experts and practitioners within the fields of decision-oriented existence cycle overview in addition to product-related environmental administration, modelling and decision-making.
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Extra resources for Ambiguities in Decision-oriented Life Cycle Inventories: The Role of Mental Models and Values
LCA-literature is consulted to illustrate the influence of mental models and values on decisions made during the life cycle inventory analysis. Due to the scope of this book, special emphasis is put on decisions made in situations related to reuse & recycling. In Chapter 6, a literature review provides an overview of current allocation procedures for open-loop recycling. The chapter concentrates on different approaches to handling reuse & recycling in LCA and the influence of mental models and values.
A set of requirements is deduced from: • Practical experience of LCA in product design (Chap. 1); • Decision theory considering LCA a decision support tool (Chap. 2); • Comparison of the ‘descriptive’ power of current impact assessment methods in view of the environmental dimension of sustainable development underlying LCA as a normative concept (Chap. 3). 2, a model of normative decision analysis by Sieben and Schildbach (1994) is introduced. The elements of LCA are structured according to this model to clarify the influence of mental models and values during the setting up of an LCA as a decision-making process (Chap.
Ideally, the material and energy flows are tracked upstream and downstream until they become elementary flows. Elementary flows, also called ‘environmental interventions’ or ‘environmental releases’, are considered a link between the socio-economic system (the technosphere) and the environment. They are assumed to be taken out of the ecosphere as resources or to be released into the ecosphere as emissions or waste63. The ‘life cycle of a product’ is a theoretical construct. , a production site.