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Comparing the profitability of various renovation packages in Swedish residential building sector: case study
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.ORCID iD: 0000-0003-0130-3356
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0003-4405-1056
2019 (English)In: Sustainable built environment conference (SBE 2019). 6-7 August, Tokyo, Japan, 2019Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Swedish government adopted national targets to reduce total energy consumption and mitigate environmental impacts. At this point, detached houses play an important role, since they account for a large share of dwelling stock in this country. The majority of these buildings are affected by technical deteriorations in building envelopes and heating, ventilation and air condition systems. Accordingly, there is a need for a deep renovation strategy, which covers both energy efficiency measures and economic issues. Additionally, a deep renovation can improve indoor climate, which contributes to the enhanced health and wellbeing. Thus, the aim of this study is to compare the efficiency of eight different renovation packages in reducing energy consumption and providing economic benefits in a detached house in Sweden. The renovation packages include 1) improving the U-value of building envelopes; 2) adding a heat recovery for ventilation system; 3) installing a ground source heat pomp for supporting heat demand and domestic hot water; 4) combination of renovation package 1 and 2; 5) combination of renovation package 1 and 3; 6) combination of renovation package 2 and 3; 7) combination of renovation package 1, 2 and 3; and 8) combination of renovation package 1, 2, 3 along with installing photovoltaic cells for producing electricity. The reduction in energy consumption was calculated in kWh/m². year for each renovation package, while the economic benefit was obtained by calculating the payback period during a lifespan of 50 years and internal rate of return with interest rates of 1%, 3% and 6%. The results indicate that renovation package 8 has the highest potential in reducing total energy consumption, while renovation package 3 is the most profitable solution since it provides the shortest payback period with the highest internal rate of return. The results help to define and project efficient energy policies in Sweden.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Energy efficiency, Detached houses, Internal rate of return, Payback period
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-87518OAI: oai:DiVA.org:lnu-87518DiVA, id: diva2:1342158
Conference
Sustainable built environment conference 2019 (SBE 2019), 6-7 August, Tokyo, Japan
Projects
Prowood
Funder
Knowledge Foundation, 20130245Available from: 2019-08-13 Created: 2019-08-13 Last updated: 2019-08-14Bibliographically approved

Open Access in DiVA

Abstract(157 kB)3 downloads
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File name SUMMARY01.pdfFile size 157 kBChecksum SHA-512
53346b7f53ab2ed668f6cdc15341c1ebe9c353631f926de189bf8628ba11fa3098bc6196d06500edeaf9bcb442e42c3c54d152e2ac7cb8f6d332caddc60ca3a2
Type summaryMimetype application/pdf

Authority records BETA

Jalilzadehazhari, ElahehJohansson, JimmyMahapatra, Krushna

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Jalilzadehazhari, ElahehJohansson, JimmyMahapatra, Krushna
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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
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  • Other locale
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Output format
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