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Comprehensive renovation of a multi-apartment building in Sweden: techno-economic analysis with respect to different economic scenarios
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0002-1337-0719
Linnaeus University, Faculty of Technology, Department of Building Technology.ORCID iD: 0000-0002-5220-3454
Umeå University, Sweden.ORCID iD: 0000-0002-0588-9510
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0003-2961-296X
2024 (English)In: Building Research & Information, ISSN 0961-3218, E-ISSN 1466-4321, Vol. 52, no 4, p. 463-478Article in journal (Refereed) Published
Abstract [en]

A wider deployment of nearly zero energy buildings (NZEBs) is expected to contribute to the transition to a decarbonized and energy-efficient building sector in Europe. This study proposed an integrated energy-economic analysis to exemplify the feasibility of NZEB renovation in temperate climate. A parametric analysis was performed to identify technical building system configurations that give minimum share of renewable energy systems contributing to NZEB level. Final energy savings, global costs and cost-effectiveness of renovating a building to NZEB level are analysed, considering active and passive energy efficiency measures (EEMs). The active EEMs included efficient water taps and heat recovery ventilation, and the passive EEMs encompassed insulations to roof, exterior walls and ground floor, and improvements of windows and doors. The building had initial final energy use of 133 kWh/m2 year for space heating, domestic hot water production (DHW) and facility electricity. The results show that NZEB level is achieved with active and passive EEMs, without renewable energy systems for scenarios with low discount rates and high future energy price escalations. The annual final energy use for space heating, DHW and facility electricity is reduced cost-effectively by 37-54%. Furthermore, increasing size of PV-system enhanced cost-effectiveness by lowering total global costs.

Place, publisher, year, edition, pages
Taylor & Francis Group, 2024. Vol. 52, no 4, p. 463-478
Keywords [en]
NZEB, energy renovation, multi-apartment buildings, cost-effectiveness, discount rate, energy price
National Category
Building Technologies
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-123392DOI: 10.1080/09613218.2023.2240442ISI: 001040226100001Scopus ID: 2-s2.0-85166672951OAI: oai:DiVA.org:lnu-123392DiVA, id: diva2:1784828
Available from: 2023-07-31 Created: 2023-07-31 Last updated: 2024-09-03Bibliographically approved

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Boussaa, YoucefDodoo, AmbroseTruong, Nguyen LeRupar-Gadd, Katarina

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