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A staged approach for energy retrofitting an old service building: a cost-optimal assessment

2021Journal article Open access
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dc.contributor.authorLopes, Jorge
dc.contributor.authorOliveira, Rui
dc.contributor.authorBanaitienė, Nerija
dc.contributor.authorBanaitis, Audrius
dc.date.accessioned2021-10-29T13:15:59Z
dc.date.available2021-10-29T13:15:59Z
dc.date.issued2021
dc.description.abstractOffice buildings built before the pre-1960 age constitute a relevant group for analyzing the energy performance of the Portuguese building sector. A dynamic energy simulation was used to assess the energy performance of an existing office building located in the town of Bragança, Portugal. By using a staged renovation approach, two passive technologies applied to the building envelope and an efficient domestic hot water system were selected and a financial evaluation through the net saving (NS) method was undertaken to choose the best efficiency measures/packages for improving the building’s energy performance. Real discount rates of 3% and 1% were used in the financial evaluation. Considering the real discount rate of 3%, the results showed that only two out seven retrofit options had a positive financial return. By using the real discount rate of 1%, all retrofit options were found to be financially efficient. The results of the study corroborated those of earlier works that found that the financial profitability of energy renovation investments is very sensitive to the discount rate used in the analysis. The results of the study also suggested that the staged renovation approach used in the analysis is economically feasible, and that this approach is an alternative to one-step renovation approach to help to achieve the country´s energy and climate targets by 2030. Suggestions for future research conducted for office buildings in the different climate zones and other age groups in Portugal are proposed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLopes, Jorge; Oliveira, Rui; Banaitiene, Nerija; Banaitis, Audrius (2021). A staged approach for energy retrofitting an old service building: a cost-optimal assessment. Energies. ISSN 1996-1073. 14:21, p. 1-23pt_PT
dc.identifier.doi10.3390/en14216929pt_PT
dc.identifier.issn1996-1073
dc.identifier.urihttp://hdl.handle.net/10198/24143
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBuilding retrofittingpt_PT
dc.subjectCost-optimalitypt_PT
dc.subjectDynamic energy simulationpt_PT
dc.subjectEconomic assessmentpt_PT
dc.subjectEnergy performancept_PT
dc.subjectStaged renovationpt_PT
dc.titleA staged approach for energy retrofitting an old service building: a cost-optimal assessmentpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue21pt_PT
oaire.citation.startPage6929pt_PT
oaire.citation.titleEnergiespt_PT
oaire.citation.volume14pt_PT
person.familyNameLopes
person.familyNameOliveira
person.givenNameJorge
person.givenNameRui
person.identifier2190025
person.identifier.ciencia-idC717-48BF-73F7
person.identifier.ciencia-idBE1A-620F-6670
person.identifier.orcid0000-0002-4799-0166
person.identifier.orcid0000-0003-4444-2591
person.identifier.ridAAK-2127-2020
person.identifier.scopus-author-id7202732761
person.identifier.scopus-author-id57193743231
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication00b52a70-b4c9-4bcb-ba11-8736c0690411
relation.isAuthorOfPublication18758fbc-c57f-48fb-bcec-25f449279fd5
relation.isAuthorOfPublication.latestForDiscovery18758fbc-c57f-48fb-bcec-25f449279fd5

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