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Efficiency assessment in co-production systems based on modified emergy accounting approach

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Alternative Title
Efficiency assessment in co-production systems based on modified emergy accounting approach
Abstract
Emergy accounting in a system with co-production branch is of great scientific interest since each branch corresponds
to a different transformity value. In previous studies, limitations associated with emergy accounting in
co-production systems have been highlighted where some “inputs” have to be added to obtain a “useful” product
from a “co-product” ? giving rise to inaccuracies in the emergy accounting process. To address these methodological
aspects of emergy assessment in co-production systems, a modified physical quantity method (MPQM) ?
that goes in line with the standard emergy algebra ? has been proposed in order to provide a different perspective
for accounting co-products efficiency. The robustness of MPQM has been verified by taking the case study of
Eucalyptus pulp production and a comparison is made against conventional and energy/exergy weighting
methods. As per the results, MPQM was able to provide accurate results for co-production systems as compared
with other emergy accounting methods. However, the case of Eucalyptus pulp production was found to be
“inefficient” following the MPQM approach. These findings are expected to strengthen the methodological aspects
of emergy accounting based on the physical quantity criterion.
Author(s)
박흥석슈레스타 케샵Izhar Hussain ShahZhe Liu
Issued Date
2021
Type
Article
Keyword
EmergyCo-production systemModified physical quantity methodTransformity Efficiency assessment
DOI
10.1016/j.ecolind.2021.107675
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9261
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_163d0766878d4ca6bbbaf01291e7266b&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Efficiency%20assessment%20in%20co-production%20systems%20based%20on%20modified%20emergy%20accounting%20approach&offset=0&pcAvailability=true
Publisher
ECOLOGICAL INDICATORS
Location
네덜란드
Language
영어
ISSN
1470-160X
Citation Volume
126
Citation Number
1
Citation Start Page
107675
Citation End Page
107675
Appears in Collections:
Engineering > Civil and Environmental Engineering
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