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Environmental impact of energy refurbishment of buildings within different district heating systems
Dalarna Univ, Sch Technol & Business Studies, SE-79188 Falun, Sweden..
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Fluid and Climate Technology.
Dalarna Univ, Sch Technol & Business Studies, SE-79188 Falun, Sweden..
Dalarna Univ, Sch Technol & Business Studies, SE-79188 Falun, Sweden.;Umea Univ, Dept Appl Phys & Elect, SE-90187 Umea, Sweden..
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2018 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 227, p. 231-238Article in journal (Refereed) Published
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 m(2) 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
ELSEVIER SCI LTD , 2018. Vol. 227, p. 231-238
Keywords [en]
District heating, Primary energy, Energy refurbishment, Building simulation, Multi-family house
National Category
Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-269580DOI: 10.1016/j.apenergy.2017.07.022ISI: 000445987200025Scopus ID: 2-s2.0-85026287103OAI: oai:DiVA.org:kth-269580DiVA, id: diva2:1422371
Note

QC 20200407

Available from: 2020-04-07 Created: 2020-04-07 Last updated: 2020-04-07Bibliographically approved

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