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Impact analysis of energy efficiency measures in the electrolysis process in primary aluminium production
Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-6790-3867
Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-0360-6019
2019 (English)In: WEENTECH Proceedings in Energy, 2019, Vol. 4(2), p. 177-184Conference paper, Published paper (Refereed)
Abstract [en]

The Paris Agreement includes the goals of ‘holding the increase in the global average temperature to well below 2°C above pre-industrial levels’ and ‘making finance flows consistent with a pathway towards low greenhouse gas emissions’. Industrial energy efficiency will play an important role in meeting those goals as well as becoming a competitive advantage due to reduced costs for companies. The aluminium industry is energy intensive and uses fossil fuels both for energy purposes and as reaction material. Additionally, the aluminium industry uses significant amounts of electricity. The electrolysis process in the primary production of aluminium is the most energy- and carbon-intensive process within the aluminium industry. The aim of this paper is to study the effects on primary energy use, greenhouse gas emissions and costs when three energy efficiency measures are implemented in the electrolysis process. The effects on the primary energy use, greenhouse gas emissions and costs are calculated by multiplying the savings in final energy use by a primary energy factor, emissions factor and price of electricity, respectively. The results showed significant savings in primary energy demand, greenhouse gas emissions and cost from the implementation of the three measures. These results only indicate the size of the potential savings and a site-specific investigation needs to be conducted for each plant. This paper is a part of a research project conducted in close cooperation with the Swedish aluminium industry.

Place, publisher, year, edition, pages
2019. Vol. 4(2), p. 177-184
Series
WEENTECH Proceedings in Energy, ISSN 2059-2353
Keywords [en]
Energy efficiency, Aluminium industry, Primary aluminium production, Electrolysis, Primary energy use, Greenhouse gas emissions, Cost saving
National Category
Energy Systems Environmental Management Other Environmental Engineering Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:liu:diva-153779DOI: 10.32438/WPE.8818OAI: oai:DiVA.org:liu-153779DiVA, id: diva2:1277202
Conference
3rd International Conference on Energy, Environment and Economics
Projects
Increased energy efficiency in the supply chains of aluminium industry - a carbon neutral industry in 2050
Funder
Swedish Energy Agency, 40552-1Available from: 2019-01-09 Created: 2019-01-09 Last updated: 2019-01-09

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Publisher's full texthttp://weentechpublishers.com/paper.aspx?pid=410f6e9a-da0a-4872-aeb1-f5d001a948a8

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Haraldsson, JoakimJohansson, Maria

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