Hybrid life cycle assessment (LCA) will likely yield more accurate results than process-based LCA

JOURNAL OF CLEANER PRODUCTION

卷:176

Article

Pomponi, Francesco¹  Lenzen, Manfred² 

[1] Edinburgh Napier Univ, ISC, Edinburgh, Midlothian, Scotland

[2] Univ Sydney, Sch Phys A28, ISA, Sydney, NSW, Australia

关键词: Hybrid;    Life cycle assessment;    Input-output;    Process;    Aggregation;    Truncation error;    Eigenvalues;   

DOI  :  10.1016/j.jclepro.2017.12.119

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

Free