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A system analysis of LKAB Malmberget heating system to centralisation and substitution of fossil fuels to biofuels
RISE, Swerea, Swerea MEFOS.
LKAB.
RISE, Swerea, Swerea MEFOS.
2012 (English)In: CHISA 2012 - 20th International Congress of Chemical and Process Engineering and PRES 2012 - 15th Conference PRES, 2012Conference paper, Published paper (Refereed)
Abstract [en]

The profitability of shifting from a current decentralized and oil- and electricity-based heat production to a centralized system was evaluated. Existing decentralized system with upcoming retrofit investment was not efficient. Three cases showing the investment costs, energy costs, maintenance costs, and CO2 used are presented. The financial evaluation of this work was made considering 10% discount rate. Sensitivity analysis should be made for various energy costs and discount rates. In Malmberget, the heat demand varies significantly from winter to summer. This means the system needs a high maximal capacity but only a part time of the year. The waste heat recovery cannot cover for the maximum heat load in winter, so extra heat capacity is required. This extra heat can be made from different sources, e.g., electricity, oil, coal, biomass, and heat, from district. Thus, a centralized system will, in several ways, make the heat deliveries and future improvements more flexible. It will be able to increase the life time of boilers, which is not needed all year around. It is easier to connect new buildings and processes to the system and control of the system will be easier when most of the heat is produced in the same building. This is an abstract of a paper presented at the CHISA 2012 - 20th International Congress of Chemical and Process Engineering and PRES 2012 - 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (Prague, Czech Republic 8/25-29/2012).

Place, publisher, year, edition, pages
2012.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13464Scopus ID: 2-s2.0-84874840625OAI: oai:DiVA.org:ri-13464DiVA: diva2:973673
Conference
20th International Congress of Chemical and Process Engineering, CHISA 2012 and 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2012
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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Swerea MEFOS
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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More styles
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  • de-DE
  • en-GB
  • en-US
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Output format
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