Journal
JOURNAL OF CLEANER PRODUCTION
Volume 176, Issue -, Pages 210-215Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2017.12.119
Keywords
Hybrid; Life cycle assessment; Input-output; Process; Aggregation; Truncation error; Eigenvalues
Categories
Funding
- UK Engineering and Physical Sciences Research Council [EP/R01468X/1]
- Australian Research Council [DP0985522, DP130101293]
- National eResearch Collaboration Tools and Resources project (NeCTAR) through Industrial Ecology Virtual Laboratory
- Education Investment Fund
- EPSRC [EP/R01468X/1] Funding Source: UKRI
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We analyse the comparative investigation into truncation vs. aggregation errors of process-based and hybrid LCA by Yang et al. 2017. We analyse the validity of their findings when the hypothetical five-sector economy is altered to account for realistic technological and sectoral interdependencies. We show that in such cases the truncation error of process-based LCA outweighs the aggregation error of hybrid LCA. To this end, we compare the dominant eigenvalue of our alternative economy with that of real economies, showing good agreement. The same validity check does not hold for the system used by Yang and colleagues. Additionally, we demonstrate that even simple process systems can have higher dominant eigenvalues, provided they are based on realistic data. (C) 2017 Elsevier Ltd. All rights reserved.
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