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Pregled bibliografske jedinice broj: 770854

The implicit boundary conditions of attributional and consequential LCA


Weidema, Bo; Grbeš, Anamarija; Brandão Miguel
The implicit boundary conditions of attributional and consequential LCA // The implicit boundary conditions of attributional and consequential LCA
Guildford, Ujedinjeno Kraljevstvo, 2015. (predavanje, međunarodna recenzija, sažetak, ostalo)


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Naslov
The implicit boundary conditions of attributional and consequential LCA

Autori
Weidema, Bo ; Grbeš, Anamarija ; Brandão Miguel

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
The implicit boundary conditions of attributional and consequential LCA / - , 2015

Skup
ISIE Conference 2015: Taking stock of industrial ecology - University of Surrey, Guildford, UK - 7-10 July 2015

Mjesto i datum
Guildford, Ujedinjeno Kraljevstvo, 07.07.2015. - 10.07.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Different Modes of LCA

Sažetak
In both attributional and consequential system modelling, fundamental assumptions are implied on what unit processes to include in the product systems, but these assumptions are typically not made explicit. The extent of unit processes included in a product system is fundamentally dependent on the leakage in the studied supply chain, i.e. the extent to which the initial reference flow is lost to the system environment in each step of the supply chain. If there was no leakage, an attributional product system would include all unit processes since the start of human civilisation, and a consequential product system would include all consequences to the end of human civilisation. In practice, leakage provides a clear boundary condition for both attributional and consequential system modelling. In system models that are based on an economic definition of the supply chain, the leakage occurs in each step in the supply chain due to the payment of labour, tax, profit and rent (also known as primary factors). The unit processes in a revenue allocated system are thus limited to those that contribute to the life cycle costs of the studied reference flow. And the unit processes included in a consequential system are limited to those that react to the marginal change in income resulting from the spending on the reference flow, corresponding to the first order effects of this spending. Implicitly, a consequential model does not include second order effects, i.e. the changes in consumption patterns that may result from the redistribution of the initial spending on the population groups that receive the primary factor income, nor does it include the second order effects of stimulating specific activities, e.g. from research and technological development. Such multiplier effects can be – and are – included in dynamic economic models for the study of societal developments, but this goes beyond the normal first order, steady-state, small-scale perspective of consequential LCA. When a consequential model is used to compare two products with different prices, the monetary balance of the combined system can only be maintained by adding the first order price rebound effect. The described implicit boundary condition thus provides a clear rationale for and delimitation of the rebound effect to be included. For attributional models with other allocation keys than revenue, leakage also occurs, but with the additional complication that allocation properties that are also present in waste and emissions needs to be taken into account.

Izvorni jezik
Engleski



POVEZANOST RADA


Ustanove:
Rudarsko-geološko-naftni fakultet, Zagreb

Profili:

Avatar Url Anamarija Grbeš (autor)


Citiraj ovu publikaciju:

Weidema, Bo; Grbeš, Anamarija; Brandão Miguel
The implicit boundary conditions of attributional and consequential LCA // The implicit boundary conditions of attributional and consequential LCA
Guildford, Ujedinjeno Kraljevstvo, 2015. (predavanje, međunarodna recenzija, sažetak, ostalo)
Weidema, B., Grbeš, A. & Brandão Miguel (2015) The implicit boundary conditions of attributional and consequential LCA. U: The implicit boundary conditions of attributional and consequential LCA.
@article{article, author = {Weidema, Bo and Grbe\v{s}, Anamarija}, year = {2015}, keywords = {Different Modes of LCA}, title = {The implicit boundary conditions of attributional and consequential LCA}, keyword = {Different Modes of LCA}, publisherplace = {Guildford, Ujedinjeno Kraljevstvo} }
@article{article, author = {Weidema, Bo and Grbe\v{s}, Anamarija}, year = {2015}, keywords = {Different Modes of LCA}, title = {The implicit boundary conditions of attributional and consequential LCA}, keyword = {Different Modes of LCA}, publisherplace = {Guildford, Ujedinjeno Kraljevstvo} }




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