Exergy accounting of energy and materials flows in steel production systems

Citation
Mm. Costa et al., Exergy accounting of energy and materials flows in steel production systems, ENERGY, 26(4), 2001, pp. 363-384
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Engineering & Energy
Journal title
ENERGY
ISSN journal
0360-5442 → ACNP
Volume
26
Issue
4
Year of publication
2001
Pages
363 - 384
Database
ISI
SICI code
0360-5442(200104)26:4<363:EAOEAM>2.0.ZU;2-X
Abstract
A life-cycle inventory (LCI) of steel based on exergy values is presented. Exergy accounting of energy and materials flows for distinct steel producti on processes - conventional integrated, semi-integrated and new integrated with smelt reduction - is used to calculate and compare exergy losses and e fficiencies for each case. The exergy LCI provides an integrated measure of resources, products and wastes at different aggregation levels, from singl e unit operations and upstream production steps to steel plants and product ion routes. Exergy values for pollution and wastes are presented and discus sed. A sensitivity analysis is performed in order to test how variations in some parameters affect the results of the total exergy accounting for the different steel production routes. (C) 2001 Elsevier Science Ltd. All right s reserved.