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Environmental impact of energy refurbishment of buildings within different district heating systems
Dalarna Univ, Sweden.
Dalarna Univ, Sweden; KTH Royal Inst Technol, Sweden.
Dalarna Univ, Sweden.
Dalarna Univ, Sweden; Umea Univ, Sweden.
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2018 (Engelska)Ingår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 227, s. 231-238Artikel i tidskrift (Refereegranskat) 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. (C) 2017 Elsevier Ltd. All rights reserved.

Ort, förlag, år, upplaga, sidor
ELSEVIER SCI LTD , 2018. Vol. 227, s. 231-238
Nyckelord [en]
District heating; Primary energy; Energy refurbishment; Building simulation; Multi-family house
Nationell ämneskategori
Energisystem
Identifikatorer
URN: urn:nbn:se:liu:diva-152066DOI: 10.1016/j.apenergy.2017.07.022ISI: 000445987200025OAI: oai:DiVA.org:liu-152066DiVA, id: diva2:1259437
Anmärkning

Funding Agencies|industrial post-graduate school Reesbe; Knowledge Foundation [20120273]

Tillgänglig från: 2018-10-29 Skapad: 2018-10-29 Senast uppdaterad: 2018-10-29

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Ödlund, Louise
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