Variables affecting energy efficiency and CO2 emissions in the steel industry
Specific energy consumption (SEC) is an energy efficiency indicator widely used in industry for measuring the energy efficiency of different processes. In this paper, the development of energy efficiency and CO2 emissions of steelmaking is studied by analysing the energy data from a case mill. First, the specific energy consumption figures were calculated using different system boundaries, such as the process level, mill level and mill site level. Then, an energy efficiency index was developed to evaluate the development of the energy efficiency at the mill site. The effects of different production conditions on specific energy consumption and specific CO2 emissions were studied by PLS analysis. As theory expects, the production rate of crude steel and the utilisation of recycled steel were shown to affect the development of energy efficiency at the mill site. This study shows that clearly defined system boundaries help to clarify the role of on-site energy conversion and make a difference between the final energy consumption and primary energy consumption of an industrial plant with its own energy production.
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- Gielen, Dolf & Moriguchi, Yuichi, 2002. "CO2 in the iron and steel industry: an analysis of Japanese emission reduction potentials," Energy Policy, Elsevier, vol. 30(10), pages 849-863, August.
- Karbuz, Sohbet, 1998. "Achieving accurate international comparisons of manufacturing energy use data," Energy Policy, Elsevier, vol. 26(12), pages 973-979, October.
- Tanaka, Kanako, 2008. "Assessment of energy efficiency performance measures in industry and their application for policy," Energy Policy, Elsevier, vol. 36(8), pages 2877-2892, August.
- Ozawa, Leticia & Sheinbaum, Claudia & Martin, Nathan & Worrell, Ernst & Price, Lynn, 2002. "Energy use and CO2 emissions in Mexico's iron and steel industry," Energy, Elsevier, vol. 27(3), pages 225-239.
- Farla, Jacco C. M. & Blok, Kornelis, 2001. "The quality of energy intensity indicators for international comparison in the iron and steel industry," Energy Policy, Elsevier, vol. 29(7), pages 523-543, June.
- Patterson, Murray G, 1996. "What is energy efficiency? : Concepts, indicators and methodological issues," Energy Policy, Elsevier, vol. 24(5), pages 377-390, May.
- Price, L & Sinton, J & Worrell, E & Phylipsen, D & Xiulian, H & Ji, L, 2002. "Energy use and carbon dioxide emissions from steel production in China," Energy, Elsevier, vol. 27(5), pages 429-446.
- Phylipsen, Dian & Blok, Kornelis & Worrell, Ernst & Beer, Jeroen de, 2002. "Benchmarking the energy efficiency of Dutch industry: an assessment of the expected effect on energy consumption and CO2 emissions," Energy Policy, Elsevier, vol. 30(8), pages 663-679, June.
- Worrell, Ernst & Price, Lynn & Martin, Nathan, 2001. "Energy efficiency and carbon dioxide emissions reduction opportunities in the US iron and steel sector," Energy, Elsevier, vol. 26(5), pages 513-536.