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Environmental impact of energy refurbishment of buildings within different district heating systems
Högskolan Dalarna.ORCID iD: 0000-0002-9789-3882
Högskolan Dalarna; KTH.ORCID iD: 0000-0002-6722-3220
Högskolan Dalarna.ORCID iD: 0000-0002-9943-9878
Högskolan Dalarna; Umeå universitet.
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2017 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118Article in journal (Refereed) Epub ahead of print
Abstract [en]

The refurbishment of existing buildings is often considered a way to reduce energy use and CO2 emissions in the building stock. This study analyses the primary energy and CO2 impact of refurbishing a multi-family house with different refurbishment packages, given various district heating systems. Four models of typical district heating systems were defined to represent the Swedish district heating sector. The refurbishment packages were chosen to represent typical, yet innovative ways to improve the energy efficiency and indoor climate of a multi-family house. The study was made from a system perspective, including the valuation of changes in electricity use on the margin. The results show a significant difference in primary energy use for the different refurbishment packages, depending on both the package itself as well as the type of district heating system. While the packages with heat pumps had the lowest final energy use per m2 of floor area, air heat recovery proved to reduce primary energy use and emissions of CO2-equivalents more, independent of the type of district heating system, as it leads to a smaller increase in electricity use.

Place, publisher, year, edition, pages
2017.
Keyword [en]
District heating; Primary energy; Energy refurbishment; Building simulation; Multi-family house
National Category
Civil Engineering
Research subject
Energy, Forests and Built Environments
Identifiers
URN: urn:nbn:se:hig:diva-26501DOI: 10.1016/j.apenergy.2017.07.022Scopus ID: 2-s2.0-85026287103OAI: oai:DiVA.org:hig-26501DiVA, id: diva2:1201265
Available from: 2017-08-07 Created: 2018-04-25 Last updated: 2018-04-25Bibliographically approved
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Lidberg, Tina

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  • apa
  • harvard-cite-them-right
  • ieee
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Language
  • sv-SE
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  • nn-NB
  • de-DE
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Output format
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