The results of a Life Cycle Assessment (LCA) study can be affected by several uncertainty sources, mainlydue to the methodological choices, the initial assumptions, i.e. allocation rules, system boundaries andimpact assessment methods, and the quality of the available data. Then, the experts should estimatethe extent of the above-mentioned sources of uncertainty for improving the reliability and the representativenessof the obtained eco-profiles. To estimate the uncertainty is necessary to obtain reliable,transparent and representative LCA results and to correctly support decision-makers in the selection ofdifferent product or process options.The following paper starts from a LCA study of the so-called “Sicilian tiles”, which are typical roof tilesemployed in restoring old buildings of the Mediterranean area. The authors identify the most relevantsources of uncertainty in the LCA study. Then a sensitivity analysis is performed to estimate the effectson the tile eco-profile of different secondary input data and of the chosen methods for the environmentalimpact assessment. The results show that, in some cases, significant differences in the energyand environmental indices can be obtained, pointing out the need of developing sensitivity analysis forstrengthening the reliability of the obtained eco-profiles.
|Numero di pagine||9|
|Rivista||RENEWABLE & SUSTAINABLE ENERGY REVIEWS|
|Stato di pubblicazione||Published - 2011|
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