Potentials for energy efficiency improvement in the US cement industry

Citation
E. Worrell et al., Potentials for energy efficiency improvement in the US cement industry, ENERGY, 25(12), 2000, pp. 1189-1214
Citations number
40
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Engineering & Energy
Journal title
ENERGY
ISSN journal
0360-5442 → ACNP
Volume
25
Issue
12
Year of publication
2000
Pages
1189 - 1214
Database
ISI
SICI code
0360-5442(200012)25:12<1189:PFEEII>2.0.ZU;2-C
Abstract
This paper reports on an in-depth analysis of the US cement industry, ident ifying cost-effective energy efficiency measures and potentials. Between 19 70 and 1997, primary physical energy intensity for cement production (SIC 3 24) dropped 30%, from 7.9 GJ/t to 5.6 GJ/t, while specific carbon dioxide e missions due to fuel consumption and clinker calcination dropped 17%, from 0.29 tC/tonne to 0.24 tC/tonne. We examined 30 energy-efficient technologie s and measures and estimated energy savings, carbon dioxide savings, invest ment costs, and operation and maintenance costs for each of the measures. W e constructed an energy conservation supply curve for the US cement industr y which found a total cost-effective energy saving of 11% of 1994 energy us e for cement making and a saving of 5% of total 1994 carbon dioxide emissio ns. Assuming the increased production of blended cement, the technical pote ntial for energy efficiency improvement would not change considerably. Howe ver, the cost-effective potential would increase to 18% of total energy use , and carbon dioxide emissions would be reduced by 16%. This demonstrates t hat the use of blended cements is a key cost-effective strategy for energy efficiency improvement and carbon dioxide emission reductions in the US cem ent industry. Published by Elsevier Science Ltd.