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Final energy savings and cost-effectiveness of deep energy renovation of a multi-storey residential building
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (SBER)
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (SBER)ORCID iD: Ecotechnology
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (SBER)
2017 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 135, 563-576 p.Article in journal (Refereed) Published
Abstract [en]

In this study we present a method for analysis of cost-effectiveness of end-use energy efficiency measures and demonstrate its application for modelling a wide range of energy renovation measures for a typical 1970s multi-family building in Sweden. The method integrates energy balance and bottom-up economic calculations considering total and marginal investment costs of energy efficiency measures as well as net present value of total and marginal savings of the measures. The energy renovation measures explored include additional insulation to basement walls, exterior walls, and attic floor, improved new windows, efficient electric appliances and lighting, efficient water taps, glazed enclosed balcony systems, and exhaust air ventilation heat recovery systems. The measures are analysed first individually and then designed to form economic packages. Our results show that improved windows give the biggest single final energy savings while resource-efficient taps is the most cost-effective measure for the building. We find that the cost-effectiveness of the energy renovation measures is sensitive to real discount rates and energy price increases. Cost-optimal final heat savings varies between 34% and 51%, depending on the choice of real discount rate and energy price increase. The corresponding electricity savings varies between 35% and 43%. This study shows a method and the significance of various technical and economic-related parameters in achieving deep energy savings cost-efficiently.

Place, publisher, year, edition, pages
Pergamon Press, 2017. Vol. 135, 563-576 p.
National Category
Building Technologies
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-65678DOI: 10.1016/j.energy.2017.06.123ISI: 000412043300050OAI: oai:DiVA.org:lnu-65678DiVA: diva2:1112890
Available from: 2017-06-20 Created: 2017-06-20 Last updated: 2017-11-01Bibliographically approved

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Dodoo, AmbroseGustavsson, LeifTettey, Uniben Yao Ayikoe

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CiteExportLink to record
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  • apa
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